Thursday, April 30, 2020
Negotiation Case Essay Example
Negotiation Case Essay Post-Negotiation Analysis For The Paradise Project In this case, I was playing the role of chief project manager of the Paradise Project, and I was negotiating with my Manager of Artistic Design (Angel) and Manager of Client Contracts and Customer Relations (Elion) in order to resolve the conflict between each of them. Overall, I was satisfied with the final agreement, which paid 3,000 more pesos to Angel and ensured that he would change the color of the tiles and finish the job before the deadline. At the same time, Elion would be helping him get the work done. Because we were able to reach a mutually satisfying agreement, I would like to analyze three aspects of our negotiation process; how I implemented it as a chief manager, what I learned from it, and how I can improve my negotiating skills in the future to achieve even better results. First of all, because I was playing the role of chief manager of the project; I assumed that I should be the one that controls the meeting. Therefore, I set up a brief outline for this negotiation before we met each other, and tried to keep our discussion organized. I think this was one of the significant factors that helped me steer the whole meeting toward my target outcome. Secondly, I didnââ¬â¢t spend too much time talking, instead, I spent lots of time asking them questions and listening carefully to their responses. I believe that nobody likes being asked to do something, but people usually like to provide ideas about how to do something. We will write a custom essay sample on Negotiation Case specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Negotiation Case specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Negotiation Case specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Third, during the meeting, I tried to encourage the other participants to provide their own solutions. Although some of their proposals werenââ¬â¢t feasible, I didnââ¬â¢t reject them outright, at least not at first. I pointed out the difficulties and allowed them to rethink. In fact, by employing these three strategies as a manager, I achieved a deal that was close to my target outcome, even better than my BATNA. After the meeting, I figured out that I made the mistake of treating both Elion and Angel as subordinates on the same level as each other. In fact, as a manager of client contracts and customer relations, Elion should have a closer relationship to me because itââ¬â¢s both of our jobs to get the project done and satisfy our clients. For Angel, the artistic value of his work is most important. Therefore, I should have considered each individualââ¬â¢s relationship towards me more clearly so that I could control the negotiation process even better. In addition, I figured out finding common interests amongst each party are crucial for finding a mutually agreeable solution. Angel was confident about his design. If I wanted him to change his color choice, I would have needed to convince him that changing his design doesnââ¬â¢t necessarily mean that he made a bad choice, only that it is a client request. Even though I reached an agreement efficiently, I still need to improve my negotiation skills. First, I should have been able to consider if there is another option besides of changing the color. For example, the option of keeping the color, and then convincing our client to accept it. Second, I could have been more aggressive during the meeting in order to save as much money as possible. Because I am the chief manager, and any extra cost will directly create a negative effect on my supervisorââ¬â¢s evaluation of me. To sum up, participating in this case gave me an opportunity to understand how a chief manager should perform in a negotiation process. By reviewing the result, I have learned I considered more clearly each partyââ¬â¢s relationship towards me, and I should been more aggressive during the meeting to purse them. I am looking forward to the next one.
Saturday, March 21, 2020
Free Essays on Death
The DEATH Penalty Capital Punishment is an Unlawful and Ineffective Deterrent to Murder. The United States is one of the few countries left in the world to practice the savage and immoral punishment of death. Retentionists argue that the consequence of death prevents people from committing the crime of murder. It is proven that the death penalty does not deter persons from committing murder, nor does it serve as an example of the consequences of capital crimes to society. Furthermore, it is impossible to guarantee that the criminal justice system will not discriminate against or execute the innocent. Above all, the methods of execution are horrifying and barbaric, as well as the devaluing of a human life. We must realize that the life of a murderer is worth as much as the life of the victim. An indecent justice, one that takes human lives based on ideals of vengeance and violence, is an immoral system that is unacceptable. The most widely used argument in support of capital punishment is that the consequence of execution influences criminal behavior more effectively than imprisonment does (ââ¬Å"Against the Death Penaltyâ⬠). Although the argument may sound reasonable, in reality the death penalty fails as a deterrent. First, punishment can only be a useful deterrent if it is rational and immediately used. Capital punishment cannot meet those conditions. The number of first degree murderers who are sentenced to death is small, and of this group an even smaller number of people are eventually executed. Moreover, the possibility of increasing the number of convicted murderers sentenced to death and executed by requiring mandatory death sentences was declared unconstitutional in 1976 Jewett 2 (National Coalition to Abolish the Death Penalty). Murder and other crimes of violence are not always premeditated. For example; gang violence, drive by shootings and kidnapping for ransom are serious crimes that continue to be committed bec... Free Essays on Death Free Essays on Death The DEATH Penalty Capital Punishment is an Unlawful and Ineffective Deterrent to Murder. The United States is one of the few countries left in the world to practice the savage and immoral punishment of death. Retentionists argue that the consequence of death prevents people from committing the crime of murder. It is proven that the death penalty does not deter persons from committing murder, nor does it serve as an example of the consequences of capital crimes to society. Furthermore, it is impossible to guarantee that the criminal justice system will not discriminate against or execute the innocent. Above all, the methods of execution are horrifying and barbaric, as well as the devaluing of a human life. We must realize that the life of a murderer is worth as much as the life of the victim. An indecent justice, one that takes human lives based on ideals of vengeance and violence, is an immoral system that is unacceptable. The most widely used argument in support of capital punishment is that the consequence of execution influences criminal behavior more effectively than imprisonment does (ââ¬Å"Against the Death Penaltyâ⬠). Although the argument may sound reasonable, in reality the death penalty fails as a deterrent. First, punishment can only be a useful deterrent if it is rational and immediately used. Capital punishment cannot meet those conditions. The number of first degree murderers who are sentenced to death is small, and of this group an even smaller number of people are eventually executed. Moreover, the possibility of increasing the number of convicted murderers sentenced to death and executed by requiring mandatory death sentences was declared unconstitutional in 1976 Jewett 2 (National Coalition to Abolish the Death Penalty). Murder and other crimes of violence are not always premeditated. For example; gang violence, drive by shootings and kidnapping for ransom are serious crimes that continue to be committed bec... Free Essays on Death In Virginia Woolfââ¬â¢s essay ââ¬Å" The Death of the Moth,â⬠she is suggesting no matter how much energy one has now they will eventually die. I feel this essay works because of the reality of her words. Her point is well stated in the symbolism that she chooses to use. In explaining her essay she uses the moth as a symbol for life, she also uses the window as life and then death, next she uses energy to symbol the change from child to adult. Throughout the essay Woolf is explaining the moth standing for life. When she firsts sees the moth all she can think about is how life is so simple and energetic. Woolf wonders if while this moth is flying around the window trying to find a way to escape, it is in someway a little pathetic and lifeless. Woof states, ââ¬Å" He was little or nothing but lifeâ⬠(Woolf 771). This explains why she is so intrigued by the acts the moth is doing at the moment. Woolf used the window the moth is trapped in as a symbol for life and then it turns to death. This is because while the moth is wondering how to get out of the window it looses all its energy and then dies right where just minutes earlier it was full of energy. After all the dancing Woolf sits and thinks about why things are happening the way they are. Why was the moth all the sudden dying? She could not explain what was going on except for that is seemed that ââ¬Å"death was stronger then herâ⬠(Woolf 773). This expression only goes on to say that Woolf may have been more afraid of death after seeing the moth die in such a way that was not fair. Woolf then goes on to say that energy all together represents the change from childhood to adulthood. This means that when Woolf first sees the moth she thinks of it as a child full of energy and ready to dance all over the place. As the moth is dancing it is turning into an adult and loosing energy every minute. Woolf explains, that she almost tried to help the moth but then decided against it because t... Free Essays on Death The Debate over the merits of capital punishment has endured for years, and continues to be an extremely indecisive and complicated issue. Adversaries of capital punishment point to the Marshalls and the Millgards, while proponents point to the Dahmers and Gacys. Society must be kept safe from the monstrous barbaric acts of these individuals and other killers, by taking away their lives to function and perform in our society. At the same time, we must insure that innocent people such as Marshall and Millgard are never convicted or sentenced to death for a crime that they did not commit. Many contend that the use of capital punishment as a form of deterrence does not work, as there are no fewer murders on a per- capita basis in countries or states that do have it, then those that do not. In order for capital punishment to work as a deterrence, certain events must be present in the criminal's mind prior to committing the offence. The criminal must be aware that others have been punishe d in the past for the offence that he or she is planning, and that what happened to another individual who committed this offence, can also happen to me. But individuals who commit any types of crime ranging from auto theft to 1st-Degree Murder, never take into account the consequences of their actions. Deterrence to crime, is rooted in the individuals themselves. Every human has a personal set of conduct. How much they will and will not tolerate. How far they will and will not go. This personal set of conduct can be made or be broken by friends, influences, family, home, life, etc. An individual who is never taught some sort of restraint as a child, will probably never understand any limit as to what they can do, until they have learned it themselves. Therefore, capital punishment will never truly work as a deterrent, because of human nature to ignore practised advice and to self learn. There are those who claim that capital punishment is in itself a form o... Free Essays on Death Capital Punishment is an Unlawful and Ineffective Deterrent to Murder The United States is one of the few countries left in the world to practice the savage and immoral punishment of death. Retentionists argue that the consequence of death prevents people from committing the crime of murder. It is proven that the death penalty does not deter persons from committing murder, nor does it serve as an example of the consequences of capital crimes to society. Furthermore, it is impossible to guarantee that the criminal justice system will not discriminate against or execute the innocent. Above all, the methods of execution are horrifying and barbaric, as well as the devaluing of a human life. We must realize that the life of a murderer is worth as much as the life of the victim. An indecent justice, one that takes human lives based on ideals of vengeance and violence, is an immoral system that is unacceptable. The most widely used argument in support of capital punishment is that the conse quence of execution influences criminal behavior more effectively than imprisonment does (ââ¬Å"Against the Death Penaltyâ⬠). Although the argument may sound reasonable, in reality the death penalty fails as a deterrent. First, punishment can only be a useful deterrent if it is rational and immediately used. Capital punishment cannot meet those conditions. The number of first degree murderers who are sentenced to death is small, and of this group an even smaller number of people are eventually executed. Moreover, the possibility of increasing the number of convicted murderers sentenced to death and executed by requiring mandatory death sentences was declared unconstitutional in 1976 Jewett 2 (National Coalition to Abolish the Death Penalty). Murder and other crimes of violence are not always premeditated. For example; gang violence, drive by shootings and kidnaping for ransom are serious crimes that continue to be committed because the criminal thinks he is to... Free Essays on Death Two sisters are home alone when a robber enters the house. The younger sister (8) is shot and killed, while the other one hides in horror and witnesses the shooting. Though she manages to escape and save herself, she can never fully recover from what she had seen with her own eyes almost twenty years ago. This story is not unique for there are many witnesses of murder everyday. The idea of putting another human to death is hard to completely fathom. The physical act of putting someone to death is easy to execute, but the emotions involved in carrying it out, is beyond the understanding of someone who as not witnessed such a tragic event. I know it must be painful, dehumanizing, and sickening. However, this act is sometimes necessary and it is our responsibility as a society to see that it is done. Capital punishment debates can quickly turn heated and argumentative because of the very dramatic nature of the topic. Most people either completely support capital punishment or are comple tely against it. Unfortunately there is no middle road that you can take, you canââ¬â¢t half kill a person for a crime. I will argue that capital punishment for first degree murder is a necessary part of living in a civilized society. Upon arguing for the death penalty you must understand that the death penalty is morally correct, and it will bring a closure to the victims family. Capital punishment is not only justifiable but is morally correct and should be the mandatory sentence for such crimes once an individual is found guilty. It would be neither unjust nor immoral to execute such an individual. It is not logical to believe that a person raised in our society does not know that the crimes of murder or the rape of a child will not be tolerated. Regardless of an individualââ¬â¢s background or status, individual choices lead to results that carry personal responsibility. It is inappropriate to make excuses for these criminals simply because they were negle... Free Essays on Death Fall is Death The sky is the color of hard gray stone Deathââ¬â¢s hand is stretching out Birds and animals awake with a shock Frost dances in the dawn In the high empty sky, the cold sun shines With fires that forget to warm But the chill wind burns with a stinging bite The trees blaze with cold flame The sun is buried in the high, dead hills She dies there in fire and smoke The heartbeat of the earth slows down and fades Life is swallowed up in the dusk The birds of the air have gone over the clouds The beasts of the forest sleep And the small creeping things that live in the earth Lie slain by the breath of the night Now white light and ice shine high in the sky Deathââ¬â¢s hand is squeezing hard Birds and animals cower and hide And slowly, each leaf Falls And I Walked Onto the Battlefield And I walked onto the battlefield. I marched between the lines as bullets whipped by and shells exploded. I halted in the midst of fierce combat. There was a cool gentle breeze. And I opened my trench coat. Cradled there, within my right arm, the tiniest of forms barely eight months amongst our world. And I waited with her there. Guns, and machines, all paused in their barrage, as each in time spotted the child, fell silent until only the breeze spoke. And I lifted her aloft. Her voice came gentle, at once quiet but gaining volume, gaining strength, gaining light until the battlefield rang with song as my fingers caressed her.. For she laughed. As soldiers holding guns, from side to side, whipped their heads up. For she laughed louder. As soldiers in trenches, from side to side, looked up at her, eyes lit wide. For she laughed louder still And each men, at once heavy, but lighter lighter in futility, lighter in hope together the soldiers laughed too. For they remembered their childhood and had discovered the child within themselves. And then one by one, they tur... Free Essays on Death The Debate over the merits of capital punishment has endured for years, and continues to be an extremely indecisive and complicated issue. Adversaries of capital punishment point to the Marshalls and the Millgards, while proponents point to the Dahmers and Gacys. Society must be kept safe from the monstrous barbaric acts of these individuals and other killers, by taking away their lives to function and perform in our society. At the same time, we must insure that innocent people such as Marshall and Millgard are never convicted or sentenced to death for a crime that they did not commit. Many contend that the use of capital punishment as a form of deterrence does not work, as there are no fewer murders on a per- capita basis in countries or states that do have it, then those that do not. In order for capital punishment to work as a deterrence, certain events must be present in the criminal's mind prior to committing the offence. The criminal must be aware that others have been punishe d in the past for the offence that he or she is planning, and that what happened to another individual who committed this offence, can also happen to me. But individuals who commit any types of crime ranging from auto theft to 1st-Degree Murder, never take into account the consequences of their actions. Deterrence to crime, is rooted in the individuals themselves. Every human has a personal set of conduct. How much they will and will not tolerate. How far they will and will not go. This personal set of conduct can be made or be broken by friends, influences, family, home, life, etc. An individual who is never taught some sort of restraint as a child, will probably never understand any limit as to what they can do, until they have learned it themselves. Therefore, capital punishment will never truly work as a deterrent, because of human nature to ignore practised advice and to self learn. There are those who claim that capital punishment is in itself a form o...
Wednesday, March 4, 2020
The Bre-X Gold Scandal, History and Resources
The Bre-X Gold Scandal, History and Resources Start with the biggest deposit of gold ever reported, in the headwaters of the Busang River in the steaming jungle of Borneo. The Canadian company Bre-X Minerals Ltd. didnt know about that when it bought rights to the site in 1993. But after Bre-X hired a high-living geologist to map the ore body, the deposit, along with the fever dreams that accompany gold, grew to monster size- by March 1997 that geologist was talking about a 200-million-ounce resource. You do the math at, say US$500 per ounce in mid-1990s dollars. Bre-X prepared for big times ahead by building a gold-plated website, where you could generate your own Bre-X stock chart to follow its meteoric rise. It also had a chart showing the equally meteoric rise of the estimated gold resource: together, those two pages could infect anyone with gold fever. The Sharks Arrive Bigger mineral companies took notice. Some made takeover offers. So did the Indonesian government, in the person of president Suharto and his powerful family. Bre-X owned more of this lode than seemed prudent for such a small, inexperienced foreign firm. Suharto suggested that Bre-X share its fortunate surplus with the people of Indonesia and with Barrick, a firm tied to Suhartos ambitious daughter Siti Rukmana. (Barricks advisors, among them George H. W. Bush and ex-prime minister of Canada Brian Mulroney, also favored this scheme.) Bre-X responded by enlisting Suhartos son Sigit Hardjojudanto on its side. An impasse loomed. To end the contretemps, family friend Mohamad Bob Hasan stepped in to offer all sides a deal. The American firm Freeport-McMoRan Copper Gold, led by another old Suharto friend, would run the mine and Indonesian interests would share the wealth. Bre-X would keep 45 percent of the ownership and Hasan for his pains would accept a share possibly worth a billion or so. Asked what he was paying for this stake, Hasan said, There is no payment, no nothing. It is a very clean deal. Trouble Arises The deal was announced on 17 February 1997. Freeport went to Borneo to start its own due-diligence drilling. Suharto was ready to sign a contract after this step, locking in Bre-Xs land rights for 30 years and starting the flood of gold. But just four weeks later, Bre-Xs geologist at Busang, Michael de Guzman, exited his helicopter that was 250 meters in the air at the time- an evident suicide. On March 26 Freeport reported that its due-diligence cores, drilled only a meter and a half from Bre-Xs, showed insignificant amounts of gold. The next day Bre-X stock lost almost all of its value. Freeport brought more rock samples to its American headquarters under armed guard. Bre-X commissioned a review of Freeports drilling; the review recommended more drilling. Another review focusing on the chemical assays caused Bre-X to clam up completely on 1 April, and Suhartos signature was postponed. Bre-X, in a novel strategy for the time, blamed the Web. CEO David Walsh told a fawning Calgary Herald reporter that the meltdown began when scurrilous local rumors in Indonesia were picked up by one of the ghostwriters on the Internet on the chat page or whatever. Further reviews took the rest of April. Meanwhile, disquieting details began to arise. Industry journalists soon found evidence that the Busang ore samples had been salted with gold dust. Salting of the Earth On Friday 11 April, Northern Miner magazine put a news flash on its site laying out three lines of evidence that Bre-X had been duped. First, contrary to company statements, the Busang core samples had been prepared for assay in the jungle, not in the testing lab. A videotape made by a visitor to the field site showed the humble machines common in assay labs- hammer mills, crushers, and sample splitters. Well-labeled sample bags clearly had finely crushed ore in them. Security was lax enough that samples could easily have been spiked with gold.Second, the local inhabitants had begun panning for gold in the Busang River, but in two years they never found any. Yet Bre-X claimed that gold was visible, a sign of unusually rich ore. And de Guzmans technical report, confusingly, called the gold submicroscopic, which is typical of hard-rock gold ore.Third, the assayer that tested the samples said the gold was predominantly in visible-sized grains. Also, the grains showed signs consistent with being typical river-panned gold dust, such as rounded outlines and rims depleted in silver. The assayer dodged the 64-billion-dollar question, saying that there were indeed ways for hard-rock gold grains to acquire rounded edges- but that argument was a fig leaf. The Curtain Falls Meanwhile, a storm of securities lawsuits arose around Bre-X, which vigorously protested that this was just an unfortunate series of misunderstandings. But it was too late. The collapse of Bre-X cast a cloud over the gold mining industry that lasted into the next century. David Walsh decamped to the Bahamas, where he died of an aneurysm in 1998. Bre-Xs chief geologist, John Felderhof, eventually went on trial in Canada but was acquitted of securities fraud in July 2007. Apparently in selling part of his stock holdings for $84 million in the months before the scandal hit he had not been criminal, just too stupid to catch the fraud. And I have been told that Michael de Guzman has been seen in Canada, years after the scandal. The explanation would be that, as was rumored at the time, an anonymous corpse was thrown from the helicopter. You could say the very jungle had been salted as well as the ore bags.
Monday, February 17, 2020
A Complete Specification of the Asymptotic Variance Assignment
A Complete Specification of the Asymptotic Variance - Assignment Example The le contains 6,808 observations for individuals living in Ontario. b) Estimate two human capital earnings models, one for men and one for women. Use wage as the dependent variable and include exp, exp2, Educ, not grad, hs grad somepse, uni1, uni2, and marras independent variables. Discuss the goodness of the of the two equations. From the regression table, we observe that the F-computed is 257.6> 1.88260439 (F-critical), we thus reject the null hypothesis that all regression coefficients are equal to zero. This shows that F-test is significant indicating that the observed R-squared is reliable, and is not a spurious result of oddities in the data set. Also, it shows that the proposed relationship between the response variable and the set of predictors is statistically reliable, and can be useful when the research objective is either prediction or explanation. From the regression table, we observe that the F-computed is 356.47> 1.88266598 (F-critical), we thus reject the null hypothesis that all regression coefficients are equal to zero. This shows that F-test is significant indicating that the observed R-squared is reliable, and is not a spurious result of oddities in the data set. Also, it shows that the proposed relationship between the response variable and the set of predictors is statistically reliable, and can be useful when the research objective is either prediction or explanation. c) Interpret the results of the test of overall significance for each equation. Do not forget to state the decision rule for the test, the level of significance you are using, and the critical value of the test statistic. The p-value for the overall model is 0.0000, a value less than 5%, we thus reject the null hypothesis. The null hypothesis states that the coefficient is equal to zero (no effect). We, therefore, conclude that the model is appropriate and that there is the significant effect on the dependent variable (sewage) by the independent variables.Ã
Monday, February 3, 2020
Ancient to Modern Art History Essay Example | Topics and Well Written Essays - 750 words
Ancient to Modern Art History - Essay Example The essay "Ancient to Modern Art History" investigates modern art history, ancient history and analyzes figure of St Augustine. He was a gifted writer in theological works. ââ¬Å"The good which I now sought was not outside myself. I did not look for it in things which are seen with the eye of the flesh by the light of the sun. For those who try to find joy in things outside themselves easily vanish away into emptiness. They waste themselves on the temporal pleasures of the visible world. Their minds are starved and they nibble at empty shadowsâ⬠. This is an example of many of his sayings, by which he meant that he was happy with the beauty that he had of himself and nothing he could see from the world, would ever impress him. The fulfillment he had was the acceptance of Christ and a strong belief in serving God that replaced all other aesthetic beauty that could entice the body. The beauty and precision in the detailing of Mausoleum of Galla Placidia Ravenna, in Italy, which we re built with the most precious of stones; such as such as marble and gold, placed mosaics to precision in every detail, like in the arrangement of more than the 800 stars on the roof, the alignment of the cross on the vault, the depiction of Christ as a good shepherd, all depict the visual beauty of Christianity that has attracted more tourists than believers to the religion. A fascinating mosaic inside on the south side of the Mausoleum of Galla Placidia Ravenna, in Italy, is a depiction of a man believed to have been St. Lawrence.
Sunday, January 26, 2020
Theories on Learning and Multimedia
Theories on Learning and Multimedia Literature Review Introduction Computer-based instruction was used by the military to create standardize training and be more cost-effective (Shlechter, 1991). Computer-based instruction allows individual learners to pace the lesson content to meet his or her needs and provides the environment for self-directed learning (Lowe, 2002). Computer-based instruction can be defined as using computers to deliver, track, and/or manage instruction and when computers are the main mode of content delivery. The instruction can include text, images, and feedback. Software advances allow developers to integrate audio narrations, sound clips, graphics, videos, and animation into a single presentation and played on a computer (Koroghlanian Klein, 2000; Moreno Mayer, 1999). Instruction is classified as multimedia when sound, video, and images are included. Multimedia incorporates audio and visual elements with the instruction (Craig Gholson, Driscoll, 2002; Mayer Moreno, 2003; Mayer and Sims, 1994; Mayer Johnson, 2008). Audio components include narrations, which uses the students verbal channel of his or her working memory. Visual components include static images, animations using multiple still images, a video, and/or on screen text, which uses the students visual channel of his or her working memory. When the student receives the information from the verbal and visual channel of his or her working memory and relates the information from the two channels, then meaningful learning has occurred (Tempelman-Kluit, 2006). Meaningful learning is developing a understanding of the material, which includes attending to important aspects of the presented material, mentally organizing it into a coherent cognitive structure, and integrating it with relevant existing knowledge, (Mayer Moreno, 2003). Meaningful learning or understanding occurs when students are able to apply the content they learned and are able to transfer the information to new situations or creating solutions to problems rooted in the content presented (Jamet Le Bohec, 2007; Mayer and Sims, 1994). Allowing students to process and apply the information is essential for knowledge retention and meaningful learning. In multimedia learning, active processing requires five cognitive processes: selecting words, selecting images, organizing words, organizing images, and integrating. Mayer Moreno 2003 Multimedia instruction not only incorporates audio and visual elements it also has the capability of creating nonlinear content. Creating a nonlinear lesson allows the learner to have an active role in his or her learning and bypass sections they have already learned as well as go back and review sections if they need reinforcement. It is like putting the student in the drivers seat and enabling them to reach the destination through a variety of paths versus sitting on a bus and stopping at each stop and waiting until they reach the destination. Cognitive Learning Theories in Multimedia Multiple multimedia learning theories and principles guide the creation process for multimedia presentations and facilitates student learning. Using the theories and principles guides the presentation creation process and facilitates students learning. The two overarching theories are cognitive load and dual coding. Several effects and __ related to the two main theories are: split-attention, redundancy, modality, spatial contiguity principle, temporal congruity principle and coherence principle. The four theories that are directly relevant to this study are: ___ ___ ___ and ___. Add figure of org chart of principles theories. Paivo, Sweller Mayer. Mayers theory of multimedia learning Cognitive Load The working memory has a finite capacity for processing incoming information for any one channel, visual or audio. The combined processing, at any particular time, creates the working memorys cognitive load ability (Baddeley, 1992; Mayer Moreno, 2003; Chandler Sweller, 1991). To take advantage of the memorys capability it is important to reduce redundant and irrelevant information, thus reducing the cognitive load (Sweller, 1994; Ardaà § and Unal 2008; Mayer Moreno, 2003; Tempelman-Kluit, 2006). To keep the information efficient the multimedia should eliminate information that does not apply to a lesson or assignment. Content that is nonessential for transfer or retention should also be eliminated. Information needs to be concise by carefully selecting the text and images for the content and present the information succinct and organized in a logical pattern (Mayer Moreno, 2003). Careful selection of text and images should be concise so content can be presented in a succinct and organized, logical pattern. Grouping the information into smaller portions of information reduces the cognitive load. By chunking the information, the working memory has the opportunity process the content and makes connections with prior learning and knowledge. The information is then stored in long-term memory (Mayer Moreno, 2003). After presenting a portion of the information, the multimedia presentation should include a brief activity to engage the student in processing and storing the information. Utilizing both the auditory and the visual channel of the working memory also helps with the cognitive load and content retention (Tempelman-Kluit, 2006). Based on the information above about memory and processing the Cognitive Load Theory (CLT) was developed by Sweller (1993, 1994, 1998). The theory assumes that people possess a limited working memory (Miller, 1956) and an immense long-term memory (Chase Simon, 1973), with learning mechanisms of schema acquisition (Chi et al., 1982; Larkin et al., 1980) and automatic processing (Kotovsky et al., 1985), (Jueng, Chandler Sweller, 1997). Cognitive load theory provides a single framework for instructional design based on separate cognitive processing capabilities for visual and auditory information (Jamet Le Bohec, 2007). Creating a multimedia presentation that conforms to CLT would integrate the auditory and visual information on the screen. The CLT presentation design limits the load on any one channel to prevent cognitive overload and increase learning (Kalyuga, Chandler, Sweller, 1998; Mayer and Moreno 2002; Tindall-Ford, Chandler, Sweller, 1997). Further research conducted by __ __ ______ _____ indentified three separate types of cognitive load, intrinsic, extraneous, and germane. Intrinsic cognitive load The first type of cognitive load is intrinsic and is shaped by the learning task and the learning taking place (Van Merrià «nboer and Sweller, 2005). Intrinsic cognitive load occurs between the learner and the content, with the learners level of knowledge in the content area playing a factor. The other factors are the elements the working memory is processing at one time and element interactivity (van Merrià «nboer and Sweller, 2005). Element interactivity level depends on the degree to which the learner can understand the element information independently (Pass, Renkl, Sweller, 2003). If you need to reduce total cog load (intri + extr + gemain) you need you need to know the elements and how to reduce loads. If the learner needs to understand several elements at once, and how they interact with each other, then the element interactivity is high. However, if the learner can understand each element independently then the element interactivity is low (Pass, Renkl, Sweller, 2003). Th e intrinsic level occurs with the learner and their working memory and constructing meaning from the elements presented. While intrinsic load cannot be adjusted, the extraneous load can be modified. Give own example of high and low element interactivity. (van Merrià «nboer and Sweller, 2005) à intrinsic learning schema construction and automation. Content element interactivity directly correlated to intrinsic cognitive load ? (Pass, Renkl, Sweller, 2003). Page 1 of article Extraneous cognitive load The second type of cognitive load is extraneous or ineffective and is affected by the format of the information presented and what is required of the learner. Extraneous cognitive load occurs when information or learning tasks have high levels of cognitive processing and impedes with knowledge attainment (Pass, Renkl, Sweller, 2003). Extraneous cognitive load is also referred to as ineffective cognitive load since the cognitive processing is not contributing to the learning process. The working memory has independent two channels for processing audio and visual. If the instruction occurs only using one channel instead of utilizing both channels the learner will experience a higher level of extraneous cognitive load (van Merrià «nboer and Sweller, 2005). Extraneous cognitive load can be reduced by several effects studied as part of instructional design and cognitive load report as by Sweller et al., 1998 such as; split attention, modality, and redundancy (van Merrià «nboer and Swel ler, 2005). Germane cognitive load The third type of cognitive load is germane and is also affected by design of the instruction being presented. While extraneous cognitive load accounts for information impeding learning germane cognitive load focuses on freeing cognitive resources to increase learning. Germane is also referred to as ineffective cognitive load. Germane and extraneous work together disproportionately. Designing instruction that lessens the extraneous cognitive load allows additional cognitive processing for germane load and increase students ability to assimilate information being presented (Pass, Renkl, Sweller, 2003). Intrinsic, extraneous, and germane cognitive loads work together for a combined total cognitive load; this combined load cannot be greater than the available memory resources for a learner. An experiment conducted by Tindall-Ford, Chandler and Sweller, 1997 had a purpose of measuring cognitive load. The participants were twenty two first year apprentices and had completed grade ten of high school. The participants were assigned to one of two treatments, visual-only instructions and audio-visual instructions. The experiment started with an instructional phase, which has two parts and was 100 seconds in length. Part one of the instruction phase had an explanation of how to read an electrical table and was either all visual, or was visual and audio with a cassette player. After the instructional phase part one, the participant rated the mental effort (load) based on a seven point scale. Then the apprentices took part in a test phase which included three sections. The first section was a written test where participants filled in the blank headings in an electrical table. The second section contained questions about the format of the table. After the first part of instruction and two parts of testing, participants were given the same electrical table and participants had to apply information contained in the table to examples given. Participants had 170 seconds to study the information, then completed another subjective mental effort (load) survey. Then the participants complete the final section of the test phase. The apprentices had to apply the information and select the appropriate cable for an installation job with the given parameters. Apprentices had a two week break where they continued with their normal training. Then both the two part instruction phase and the three part test phase were repeated. A 2 (group) X 2 (phase) ANOVA was run for the first instruction section and the first two sections of the written test in the test phase and significant difference was found with the audio-visual group performing better than the visual-only group. When the ANOVA was run for the mental load for the two phases significance was found again, with the audio-visual group rating the mental effort lower than the visual-only group. Similar results were found when analyzing part two of instruction mental load and section three of the written test for both phases. All test results revealed the audio-visual group outperforming the visual-only group for all tests and a lower mental load rating. Therefore the participant performance can be linked back to the cognitive load. An experiment was conducted by Ardac and Unal, 2008 finish later Based on the experiment above by Tindall-Ford, Chandler and Sweller, 1997, when selecting a format for a presentation audio-only is the better choice. This is true not only from a modality theory, it is also better from a cognitive load theory perspective, since visual-only formats cause a higher level of mental effort for participants. Transition sentence that link split-attention effect as a part of cognitive load theory. Split-Attention Effect When images or animations are involved with the redundant text then the visual channel has to pay attention to multiple visual elements and the attention is split between the many visual pieces, creating the split-attention effect. Having several visual components such as text and animations causes an increase in the cognitive load and learning is hampered (Ardac Unal, 2008). Split-attention occurs when instructional material contains multiple sources of information that are not comprehendible by themselves and need to be integrated either physically or mentally to be understandable (Jeung, Chandler Sweller, 1997; Kalyuga, Chandler, Sweller, 1998; Tindall-Ford, Chandler, Sweller, 1997). Split-attention effect can be minimized by placing related text close in proximity to the image in the presentation or using audio narration for an animation instead of on-screen text (Jamet Le Bohec, 2007). One experiment conducted to test the split-attention theory was designed by Mayer, Heiser, and Lonn, 2001. In this experiment there were 78 participants selected from an university psychology subject pool. The experiment was a 2 x 2 design with summarized on-screen text as a factor and extraneous details as a second factor. There were four groups; no text/no seductive details group with 22 students, text/no seductive details group with 19 students, no text/seductive details group with 21 students, text/seductive details group with 16 students. The group had a median age of 18.4 and was 33% male. All participants a little prior knowledge of meteorology with a score of seven or lower out of eleven questions. Participants viewed a computer-based multimedia presentation. The versions with text included a summary of the narration. The versions with seductive details included additional narrations with real world examples. The experiment started with participants completing a questionnaire to collect demographic and prior knowledge information. Then participants watched a presentation with one of the treatments at individual computers. At the completion of the video students completed a retention and transfer test. Students who received on-screen text scored significantly lower on both the transfer and retention test than student who did not have on-screen text. These results are consistent with the split-attention theory as it relates to cognitive theory of multimedia. Students who received seductive details also scored lower on both the transfer and retention test than student who did not have seductive details. These results indicate that including seductive details to a presentation hampered student learning. Another experiment conducted was by Tindall-Ford, Chandler, and Sweller, 1997. This experiment had thirty participants that were first year trade apprenticed from Sydney. The participants were randomly assigned to one of three groups, each group had ten participants. The first group was the visual only group that consisted of diagrams and related textual statements. The second group integrated the presentation included the textual statements however the statements were physically integrated into the diagrams. The third group is the audio-visual group included the same diagrams and however the textual statements were presented as audio instead of text. The participants first read the instructional materials, the audio group listened to the information from an audio-cassette. Then participants completed a written test with three sections; a labeling section, a multiple choice section, and a transfer section, and finally participants completed a practical test. While analysis of the multiple choice section revealed no significant difference, the data indicated the audio-visual group performing better than the visual group. The section three data, the transfer test, had significant with the audio-visual and the integrated group performing better than the visual only. The findings revealed that the audio-visual and the integrated formats performed better than the visual only group. The non-integrated text performed the poorest out of the three groups, which supports the split-attention effect. A set of two experiments were conducted by Mayer Moreno, 1998 to verify split-attention and dual processing. The first experiment had 78 college students from a university psychology pool with little prior knowledge about metrology. The participants were randomly assigned to one of two groups. The concurrent narrations group (AN) had 40 students and the concurrent on-screen text groups (AT) had 38 students. Participants were tested in groups of one to five and were seated at individual cubicles with computers. The participants first completed a questionnaire, which assessed the students prior knowledge and collected demographic information. Then the students watched the presentation about lightening formation; the students in the AN groups had on headphones. The presentation was 140 seconds long and included animation of the lightening process. The AN version had narration and the AT version had text on-screen that was identical to the narration, and used the same timings as the narration version. After the presentation the participants had 6 minutes to complete the retention test, where participants had to explain the lightening process. Then they had 3 minutes to complete a transfer test, which consisted of four short essay questions. Finally the participants had 3 minutes to complete a matching test, where the students had to label parts of an image, based on the lightening formation statements provided. A split-attention effect occurred for all three tests, retentions, matching, and the transfer test; which the AN group scored higher on the matching test than the AT group. These results also align with dual-processing. The second experiment by Mayer and Moreno, 1998 the content was changed to how a cars braking system operates. The first experiment had 68 college students from a university psychology pool with little prior knowledge about car mechanics. The concurrent narrations group (AN) had 34 students and the concurrent on-screen text groups (AT) had 34 students. Participants were tested in groups of one to five and were seated at individual cubicles with computers. The participants first completed a questionnaire, which assessed the students prior knowledge and collected demographic information. Then the students watched the presentation about how a cars braking system operates; the students in the AN groups had on headphones. The presentation was 45 seconds long and included animation of a cars braking process, and was broken into 10 segments. The AN version had narration and a brief pause between segments, and the AT version had text on-screen that was identical to the narration, and used the same timings as the narration version. The AT groups text appeared under the animation and stayed visible until the next segment started. Then participants were randomly assigned to one of two groups. After the presentation the participants had 5 minutes to complete the retention test, where participants had to explain the braking process. Then they had 2.5 minutes to complete a transfer test, which consisted of four short essay questions. Finally the participants had 2.5 minutes to complete a matching test, where the students were given parts of the braking system and they had to identify the parts in an image and label them. A split-attention effect occurred for all three tests, retentions, matching, and the transfer test; which the AN group scored higher on the matching test than the AT group. These results also align with dual-processing. CONCLUSION!!! (318-319) The experiments indicate the adding text in addition to the narration will impede student learning. The second experiment clarifies the split-attention effect, which if text is included it needs to be placed near the relevant part of the diagram. If text is not near the images, increase in the cognitive load occurs by trying to combine the images and text. The last two experiment further clarify the split-attention effect with three measures in two different experiments. Therefore narration should be used to accompany animation and images instead of text. Modality Effect The working memory of a human has two channels a visual channel that processes information such as text, images, and animation through the eyes and an auditory channel that processes sounds such as narration through the ears. According to the modality principle, when information is presented in multimedia explanations, it also should ideally be presented auditorily versus on screen text (Craig, Gholson, Discoll, 2002; Moreno Mayer, 1999; Mayer, 2001; Mayer Johnson, 2008; Mayer, Fennell, et al., 2004). When the information is presented auditorily, the working memory uses both channels, visual and auditory to process the information being heard and the information on the screen (Tabbers, Martens, van Merrià «nboer, 2004). By utilizing both working memory channels, the mind can allocate additional cognitive resources and create relationships between the visual and verbal information (Moreno and Mayer, 1999). When learning occurs using both memory channels the memory does not become overloaded and the learning becomes embedded, this improves the learners understanding (Mayer Moreno, 2002). Several experiments have been conducted relating to modality theory. One experiment in a geometry lesson taught in a math class at the elementary school level focused on the conditions that modality effect would be occur. The researchers, Jeung, Chandler, and Sweller, (1997) created a three-by-two experiment that included three presentation modes and two search modes. The three presentation modes were visual-visual, audio-visual, and audio-visual-flashing. The visual-visual diagrams and supporting information were presented visually as on screen text; the audio-visual group diagrams and supporting information were presented visually. In the audio-visual-flashing group, the supporting information was presented auditorily and diagrams were presented visually. However parts of the diagram flashed when the corresponding audio occurred. The two search modes were high search mode and low search mode. The high search mode labeled each end of the line separately so a line was identified by the letters at each end such as AB. Whereas the low search mode labeled the entire line with a single letter, such as C and reducing the search needed to locate the information. The experiment content was geometry; the study population was sixty students from year six in a primary school with no previous geometry experience, creating ten students per group. The students participated in the experiment individually during class time. Students were randomly assigned to one of six groups the information was presented to the students on the computer. The experiment had three phases; an introduction phase where the problem was identified and was presented in one of the six modes as assigned to the student, an acquisition phase which included two worked out examples on the computer, after each example students were required to complete a similar problem with pencil and paper, and finally a test phase that included four problems for students to complete with pencil and paper. In the test phase they found a significant effect on presentation mode but not on the search complexity. They performed additional data analysis to discover the significance between the presentation modes occurred in the high search group, but not the low search group. Analysis of the presentation modes for the high search group revealed that the audio-visual-flashing group performed a higher level of performance than the visual-visual group. The experiment confirmed the modality theory hypothesis that mixed mode presentation (audio-visual-flashing) would be more effective because the multiple modes increase the working memory capacity. However these results were only found with the high search group and not the low search group. The group conducted two additional experiments to focus on high search and low search separately. The second experiment focused on high search. For this experiment, the population included thirty students from a Sydney public primary school who were in year six and had not been taught parallel line in geometry. The procedure was the same as before however the geometry content was a complex diagram. The groups were visual-visual, audio-visual, and audio-visual-flashing, with ten students were in each group. The results were consistent with modality theory and students who were in the audio-visual-flashing group performed better then the visual-visual group, and no differences were found between visual-visual group and the audio-visual group. Therefore for high search materials, the dual presentation mode increased performance when a visual reference was provided. The third experiment focused on low search. In this experiment the population included thirty students from a Sydney public primary school who had not been taught parallel lines in geometry. The groups included visual-visual, audio-visual, and audio-visual-flashing, and ten students were in each group. The procedure was similar to the first experiment however the geometry content was a low search diagram and only contained two labels. The groups were visual-visual, audio-visual, and audio-visual-flashing, with ten students in each group. The results revealed that the modality effect did occur with the transfer problems and the visual-visual group took more time than the audio-visual and the audio-visual-flashing group. The difference was that with the low search content the audio-visual group performed better than the visual-visual group meaning, low search materials the flashing indicator is not as beneficial. The three experiments had demonstrated that using mixed modes of presenta tion increases the effectiveness of the working memory and capacity for learning. The results indicated that when content requires a high level of search, visual indicators need to be included to free up cognitive resources and increase memory capacity. Therefore, based on the work of Jeung, Chandler, and Sweller (1997) when the computer multimedia presentations were created with a visual cue of a yellow box with a red outline was used as a visual indicator to assist users to locate where the mouse is clicking so students are not scanning the entire video screen for the mouse. In addition to visual references one version of the video included audio only and another version will contain text only to confirm the modality effect. Selecting the most appropriate part of the working memory to disseminate the information and using the auditory channel to process information via audio instead of visual text allows the visual channel to use the working memory to focus on the images and animations that coincide with the audio. It is similar to watching a news program on television, your ears are listening to the news anchor and the working memory is processing that information while your eyes are watching the corresponding footage and the brain it combining the two pieces of information together. However if put closed captioning on you are reading the same information you are hearing which is redundant. Redundancy Effect Redundancy effect can be defined as information being presented appears as both an image and as on-screen text, and the visual channel is responsible for all information while the audio channel is not used (Mayer, 2001; Barron Calandra, 2003). The distinction between the split-attention and redundancy effects hinges on the distinction between sources of information that are intelligible in isolation and those that are not. If a diagram and the concepts of functions it represents are sufficiently self-contained and intelligibly in isolation, then any text explaining the diagram is redundant and should be omitted in order to reduce the cognitive load (Kalyuga, Chandler, Sweller, 1998). Redundancy can occur with full text and full audio, full text and partial audio or partial text and full audio (Barron Calandra, 2003). The redundant information may be duplicate text and narration, a text description and a diagram or on-screen text and audio narration. The duplicate information cause s in increase in the learners working memory because the visual channel is processing the same information from multiple sources. (Kalyuga, Chandler, Sweller, 1998; Mayer, Heiser and Lonn, 2001). The redundancy effect is evident when student performance is hindered when redundant information is present, and student performance increase when the redundant information is removed (Kalyuga et all, 1998; Mayer, Heiser and Lonn, 2001; Jamet Le Bohec, 2007). The redundancy effect can be eliminated by presenting on-screen text as narration or presenting information as a diagram instead of a lengthy text explanation, and delivering information in a single mode that works complimentary with the other content be delivered (Mayer, Heiser and Lonn, 2001). Several experiments have been conducted relating to redundancy theory. One experiment conducted by Jamet and Le Boec, 2007 was designed to test the hypothesis that redundancy effect would be observed with full text and narration, and presenting sequential text would reduce the redundancy effect. The experiment had 90 undergraduate students from a psychology pool in France, with a median age of 20. The participants were randomly assigned to one of three groups; no text, full text with corresponding audio, and sequential text. The experiment started with a prior knowledge test with four general questions and two specific questions. Then the participants viewed three documents about memory functioning, the presentation lasted about 11 minutes. After the presentation the participants took a retention test twelve open-ended questions. Then they took a transfer test with twelve inferential open-ended questions. Finally, the participants had to complete a diagram by labeling components. Results revealed significance difference with the retention scores with the no-text group performing better than the full-text group and the sequential text group. Similar results were reported for the diagram completion portion of the experiment and the transfer task. There was no significant effect size to indicate that the redundancy effect would be reduced by presenting redundant text sequentially. There was a significant effect between the no-text and the other two groups for the transfer, retention, and the diagram test which validates the redundancy effect. Based on the findings from the experiment above, having on-screen text in addition to narration overloads the visual channel and decreases learning. The authors did point out that the participants had a difficult time understanding the documents presented and they could not control the presentation. Another set of experiments were conducted by Mayer and Johnson, 2008 to test the redundancy theory. The first experiment focused on short redundant text that was display on-screen. Theories on Learning and Multimedia Theories on Learning and Multimedia Literature Review Introduction Computer-based instruction was used by the military to create standardize training and be more cost-effective (Shlechter, 1991). Computer-based instruction allows individual learners to pace the lesson content to meet his or her needs and provides the environment for self-directed learning (Lowe, 2002). Computer-based instruction can be defined as using computers to deliver, track, and/or manage instruction and when computers are the main mode of content delivery. The instruction can include text, images, and feedback. Software advances allow developers to integrate audio narrations, sound clips, graphics, videos, and animation into a single presentation and played on a computer (Koroghlanian Klein, 2000; Moreno Mayer, 1999). Instruction is classified as multimedia when sound, video, and images are included. Multimedia incorporates audio and visual elements with the instruction (Craig Gholson, Driscoll, 2002; Mayer Moreno, 2003; Mayer and Sims, 1994; Mayer Johnson, 2008). Audio components include narrations, which uses the students verbal channel of his or her working memory. Visual components include static images, animations using multiple still images, a video, and/or on screen text, which uses the students visual channel of his or her working memory. When the student receives the information from the verbal and visual channel of his or her working memory and relates the information from the two channels, then meaningful learning has occurred (Tempelman-Kluit, 2006). Meaningful learning is developing a understanding of the material, which includes attending to important aspects of the presented material, mentally organizing it into a coherent cognitive structure, and integrating it with relevant existing knowledge, (Mayer Moreno, 2003). Meaningful learning or understanding occurs when students are able to apply the content they learned and are able to transfer the information to new situations or creating solutions to problems rooted in the content presented (Jamet Le Bohec, 2007; Mayer and Sims, 1994). Allowing students to process and apply the information is essential for knowledge retention and meaningful learning. In multimedia learning, active processing requires five cognitive processes: selecting words, selecting images, organizing words, organizing images, and integrating. Mayer Moreno 2003 Multimedia instruction not only incorporates audio and visual elements it also has the capability of creating nonlinear content. Creating a nonlinear lesson allows the learner to have an active role in his or her learning and bypass sections they have already learned as well as go back and review sections if they need reinforcement. It is like putting the student in the drivers seat and enabling them to reach the destination through a variety of paths versus sitting on a bus and stopping at each stop and waiting until they reach the destination. Cognitive Learning Theories in Multimedia Multiple multimedia learning theories and principles guide the creation process for multimedia presentations and facilitates student learning. Using the theories and principles guides the presentation creation process and facilitates students learning. The two overarching theories are cognitive load and dual coding. Several effects and __ related to the two main theories are: split-attention, redundancy, modality, spatial contiguity principle, temporal congruity principle and coherence principle. The four theories that are directly relevant to this study are: ___ ___ ___ and ___. Add figure of org chart of principles theories. Paivo, Sweller Mayer. Mayers theory of multimedia learning Cognitive Load The working memory has a finite capacity for processing incoming information for any one channel, visual or audio. The combined processing, at any particular time, creates the working memorys cognitive load ability (Baddeley, 1992; Mayer Moreno, 2003; Chandler Sweller, 1991). To take advantage of the memorys capability it is important to reduce redundant and irrelevant information, thus reducing the cognitive load (Sweller, 1994; Ardaà § and Unal 2008; Mayer Moreno, 2003; Tempelman-Kluit, 2006). To keep the information efficient the multimedia should eliminate information that does not apply to a lesson or assignment. Content that is nonessential for transfer or retention should also be eliminated. Information needs to be concise by carefully selecting the text and images for the content and present the information succinct and organized in a logical pattern (Mayer Moreno, 2003). Careful selection of text and images should be concise so content can be presented in a succinct and organized, logical pattern. Grouping the information into smaller portions of information reduces the cognitive load. By chunking the information, the working memory has the opportunity process the content and makes connections with prior learning and knowledge. The information is then stored in long-term memory (Mayer Moreno, 2003). After presenting a portion of the information, the multimedia presentation should include a brief activity to engage the student in processing and storing the information. Utilizing both the auditory and the visual channel of the working memory also helps with the cognitive load and content retention (Tempelman-Kluit, 2006). Based on the information above about memory and processing the Cognitive Load Theory (CLT) was developed by Sweller (1993, 1994, 1998). The theory assumes that people possess a limited working memory (Miller, 1956) and an immense long-term memory (Chase Simon, 1973), with learning mechanisms of schema acquisition (Chi et al., 1982; Larkin et al., 1980) and automatic processing (Kotovsky et al., 1985), (Jueng, Chandler Sweller, 1997). Cognitive load theory provides a single framework for instructional design based on separate cognitive processing capabilities for visual and auditory information (Jamet Le Bohec, 2007). Creating a multimedia presentation that conforms to CLT would integrate the auditory and visual information on the screen. The CLT presentation design limits the load on any one channel to prevent cognitive overload and increase learning (Kalyuga, Chandler, Sweller, 1998; Mayer and Moreno 2002; Tindall-Ford, Chandler, Sweller, 1997). Further research conducted by __ __ ______ _____ indentified three separate types of cognitive load, intrinsic, extraneous, and germane. Intrinsic cognitive load The first type of cognitive load is intrinsic and is shaped by the learning task and the learning taking place (Van Merrià «nboer and Sweller, 2005). Intrinsic cognitive load occurs between the learner and the content, with the learners level of knowledge in the content area playing a factor. The other factors are the elements the working memory is processing at one time and element interactivity (van Merrià «nboer and Sweller, 2005). Element interactivity level depends on the degree to which the learner can understand the element information independently (Pass, Renkl, Sweller, 2003). If you need to reduce total cog load (intri + extr + gemain) you need you need to know the elements and how to reduce loads. If the learner needs to understand several elements at once, and how they interact with each other, then the element interactivity is high. However, if the learner can understand each element independently then the element interactivity is low (Pass, Renkl, Sweller, 2003). Th e intrinsic level occurs with the learner and their working memory and constructing meaning from the elements presented. While intrinsic load cannot be adjusted, the extraneous load can be modified. Give own example of high and low element interactivity. (van Merrià «nboer and Sweller, 2005) à intrinsic learning schema construction and automation. Content element interactivity directly correlated to intrinsic cognitive load ? (Pass, Renkl, Sweller, 2003). Page 1 of article Extraneous cognitive load The second type of cognitive load is extraneous or ineffective and is affected by the format of the information presented and what is required of the learner. Extraneous cognitive load occurs when information or learning tasks have high levels of cognitive processing and impedes with knowledge attainment (Pass, Renkl, Sweller, 2003). Extraneous cognitive load is also referred to as ineffective cognitive load since the cognitive processing is not contributing to the learning process. The working memory has independent two channels for processing audio and visual. If the instruction occurs only using one channel instead of utilizing both channels the learner will experience a higher level of extraneous cognitive load (van Merrià «nboer and Sweller, 2005). Extraneous cognitive load can be reduced by several effects studied as part of instructional design and cognitive load report as by Sweller et al., 1998 such as; split attention, modality, and redundancy (van Merrià «nboer and Swel ler, 2005). Germane cognitive load The third type of cognitive load is germane and is also affected by design of the instruction being presented. While extraneous cognitive load accounts for information impeding learning germane cognitive load focuses on freeing cognitive resources to increase learning. Germane is also referred to as ineffective cognitive load. Germane and extraneous work together disproportionately. Designing instruction that lessens the extraneous cognitive load allows additional cognitive processing for germane load and increase students ability to assimilate information being presented (Pass, Renkl, Sweller, 2003). Intrinsic, extraneous, and germane cognitive loads work together for a combined total cognitive load; this combined load cannot be greater than the available memory resources for a learner. An experiment conducted by Tindall-Ford, Chandler and Sweller, 1997 had a purpose of measuring cognitive load. The participants were twenty two first year apprentices and had completed grade ten of high school. The participants were assigned to one of two treatments, visual-only instructions and audio-visual instructions. The experiment started with an instructional phase, which has two parts and was 100 seconds in length. Part one of the instruction phase had an explanation of how to read an electrical table and was either all visual, or was visual and audio with a cassette player. After the instructional phase part one, the participant rated the mental effort (load) based on a seven point scale. Then the apprentices took part in a test phase which included three sections. The first section was a written test where participants filled in the blank headings in an electrical table. The second section contained questions about the format of the table. After the first part of instruction and two parts of testing, participants were given the same electrical table and participants had to apply information contained in the table to examples given. Participants had 170 seconds to study the information, then completed another subjective mental effort (load) survey. Then the participants complete the final section of the test phase. The apprentices had to apply the information and select the appropriate cable for an installation job with the given parameters. Apprentices had a two week break where they continued with their normal training. Then both the two part instruction phase and the three part test phase were repeated. A 2 (group) X 2 (phase) ANOVA was run for the first instruction section and the first two sections of the written test in the test phase and significant difference was found with the audio-visual group performing better than the visual-only group. When the ANOVA was run for the mental load for the two phases significance was found again, with the audio-visual group rating the mental effort lower than the visual-only group. Similar results were found when analyzing part two of instruction mental load and section three of the written test for both phases. All test results revealed the audio-visual group outperforming the visual-only group for all tests and a lower mental load rating. Therefore the participant performance can be linked back to the cognitive load. An experiment was conducted by Ardac and Unal, 2008 finish later Based on the experiment above by Tindall-Ford, Chandler and Sweller, 1997, when selecting a format for a presentation audio-only is the better choice. This is true not only from a modality theory, it is also better from a cognitive load theory perspective, since visual-only formats cause a higher level of mental effort for participants. Transition sentence that link split-attention effect as a part of cognitive load theory. Split-Attention Effect When images or animations are involved with the redundant text then the visual channel has to pay attention to multiple visual elements and the attention is split between the many visual pieces, creating the split-attention effect. Having several visual components such as text and animations causes an increase in the cognitive load and learning is hampered (Ardac Unal, 2008). Split-attention occurs when instructional material contains multiple sources of information that are not comprehendible by themselves and need to be integrated either physically or mentally to be understandable (Jeung, Chandler Sweller, 1997; Kalyuga, Chandler, Sweller, 1998; Tindall-Ford, Chandler, Sweller, 1997). Split-attention effect can be minimized by placing related text close in proximity to the image in the presentation or using audio narration for an animation instead of on-screen text (Jamet Le Bohec, 2007). One experiment conducted to test the split-attention theory was designed by Mayer, Heiser, and Lonn, 2001. In this experiment there were 78 participants selected from an university psychology subject pool. The experiment was a 2 x 2 design with summarized on-screen text as a factor and extraneous details as a second factor. There were four groups; no text/no seductive details group with 22 students, text/no seductive details group with 19 students, no text/seductive details group with 21 students, text/seductive details group with 16 students. The group had a median age of 18.4 and was 33% male. All participants a little prior knowledge of meteorology with a score of seven or lower out of eleven questions. Participants viewed a computer-based multimedia presentation. The versions with text included a summary of the narration. The versions with seductive details included additional narrations with real world examples. The experiment started with participants completing a questionnaire to collect demographic and prior knowledge information. Then participants watched a presentation with one of the treatments at individual computers. At the completion of the video students completed a retention and transfer test. Students who received on-screen text scored significantly lower on both the transfer and retention test than student who did not have on-screen text. These results are consistent with the split-attention theory as it relates to cognitive theory of multimedia. Students who received seductive details also scored lower on both the transfer and retention test than student who did not have seductive details. These results indicate that including seductive details to a presentation hampered student learning. Another experiment conducted was by Tindall-Ford, Chandler, and Sweller, 1997. This experiment had thirty participants that were first year trade apprenticed from Sydney. The participants were randomly assigned to one of three groups, each group had ten participants. The first group was the visual only group that consisted of diagrams and related textual statements. The second group integrated the presentation included the textual statements however the statements were physically integrated into the diagrams. The third group is the audio-visual group included the same diagrams and however the textual statements were presented as audio instead of text. The participants first read the instructional materials, the audio group listened to the information from an audio-cassette. Then participants completed a written test with three sections; a labeling section, a multiple choice section, and a transfer section, and finally participants completed a practical test. While analysis of the multiple choice section revealed no significant difference, the data indicated the audio-visual group performing better than the visual group. The section three data, the transfer test, had significant with the audio-visual and the integrated group performing better than the visual only. The findings revealed that the audio-visual and the integrated formats performed better than the visual only group. The non-integrated text performed the poorest out of the three groups, which supports the split-attention effect. A set of two experiments were conducted by Mayer Moreno, 1998 to verify split-attention and dual processing. The first experiment had 78 college students from a university psychology pool with little prior knowledge about metrology. The participants were randomly assigned to one of two groups. The concurrent narrations group (AN) had 40 students and the concurrent on-screen text groups (AT) had 38 students. Participants were tested in groups of one to five and were seated at individual cubicles with computers. The participants first completed a questionnaire, which assessed the students prior knowledge and collected demographic information. Then the students watched the presentation about lightening formation; the students in the AN groups had on headphones. The presentation was 140 seconds long and included animation of the lightening process. The AN version had narration and the AT version had text on-screen that was identical to the narration, and used the same timings as the narration version. After the presentation the participants had 6 minutes to complete the retention test, where participants had to explain the lightening process. Then they had 3 minutes to complete a transfer test, which consisted of four short essay questions. Finally the participants had 3 minutes to complete a matching test, where the students had to label parts of an image, based on the lightening formation statements provided. A split-attention effect occurred for all three tests, retentions, matching, and the transfer test; which the AN group scored higher on the matching test than the AT group. These results also align with dual-processing. The second experiment by Mayer and Moreno, 1998 the content was changed to how a cars braking system operates. The first experiment had 68 college students from a university psychology pool with little prior knowledge about car mechanics. The concurrent narrations group (AN) had 34 students and the concurrent on-screen text groups (AT) had 34 students. Participants were tested in groups of one to five and were seated at individual cubicles with computers. The participants first completed a questionnaire, which assessed the students prior knowledge and collected demographic information. Then the students watched the presentation about how a cars braking system operates; the students in the AN groups had on headphones. The presentation was 45 seconds long and included animation of a cars braking process, and was broken into 10 segments. The AN version had narration and a brief pause between segments, and the AT version had text on-screen that was identical to the narration, and used the same timings as the narration version. The AT groups text appeared under the animation and stayed visible until the next segment started. Then participants were randomly assigned to one of two groups. After the presentation the participants had 5 minutes to complete the retention test, where participants had to explain the braking process. Then they had 2.5 minutes to complete a transfer test, which consisted of four short essay questions. Finally the participants had 2.5 minutes to complete a matching test, where the students were given parts of the braking system and they had to identify the parts in an image and label them. A split-attention effect occurred for all three tests, retentions, matching, and the transfer test; which the AN group scored higher on the matching test than the AT group. These results also align with dual-processing. CONCLUSION!!! (318-319) The experiments indicate the adding text in addition to the narration will impede student learning. The second experiment clarifies the split-attention effect, which if text is included it needs to be placed near the relevant part of the diagram. If text is not near the images, increase in the cognitive load occurs by trying to combine the images and text. The last two experiment further clarify the split-attention effect with three measures in two different experiments. Therefore narration should be used to accompany animation and images instead of text. Modality Effect The working memory of a human has two channels a visual channel that processes information such as text, images, and animation through the eyes and an auditory channel that processes sounds such as narration through the ears. According to the modality principle, when information is presented in multimedia explanations, it also should ideally be presented auditorily versus on screen text (Craig, Gholson, Discoll, 2002; Moreno Mayer, 1999; Mayer, 2001; Mayer Johnson, 2008; Mayer, Fennell, et al., 2004). When the information is presented auditorily, the working memory uses both channels, visual and auditory to process the information being heard and the information on the screen (Tabbers, Martens, van Merrià «nboer, 2004). By utilizing both working memory channels, the mind can allocate additional cognitive resources and create relationships between the visual and verbal information (Moreno and Mayer, 1999). When learning occurs using both memory channels the memory does not become overloaded and the learning becomes embedded, this improves the learners understanding (Mayer Moreno, 2002). Several experiments have been conducted relating to modality theory. One experiment in a geometry lesson taught in a math class at the elementary school level focused on the conditions that modality effect would be occur. The researchers, Jeung, Chandler, and Sweller, (1997) created a three-by-two experiment that included three presentation modes and two search modes. The three presentation modes were visual-visual, audio-visual, and audio-visual-flashing. The visual-visual diagrams and supporting information were presented visually as on screen text; the audio-visual group diagrams and supporting information were presented visually. In the audio-visual-flashing group, the supporting information was presented auditorily and diagrams were presented visually. However parts of the diagram flashed when the corresponding audio occurred. The two search modes were high search mode and low search mode. The high search mode labeled each end of the line separately so a line was identified by the letters at each end such as AB. Whereas the low search mode labeled the entire line with a single letter, such as C and reducing the search needed to locate the information. The experiment content was geometry; the study population was sixty students from year six in a primary school with no previous geometry experience, creating ten students per group. The students participated in the experiment individually during class time. Students were randomly assigned to one of six groups the information was presented to the students on the computer. The experiment had three phases; an introduction phase where the problem was identified and was presented in one of the six modes as assigned to the student, an acquisition phase which included two worked out examples on the computer, after each example students were required to complete a similar problem with pencil and paper, and finally a test phase that included four problems for students to complete with pencil and paper. In the test phase they found a significant effect on presentation mode but not on the search complexity. They performed additional data analysis to discover the significance between the presentation modes occurred in the high search group, but not the low search group. Analysis of the presentation modes for the high search group revealed that the audio-visual-flashing group performed a higher level of performance than the visual-visual group. The experiment confirmed the modality theory hypothesis that mixed mode presentation (audio-visual-flashing) would be more effective because the multiple modes increase the working memory capacity. However these results were only found with the high search group and not the low search group. The group conducted two additional experiments to focus on high search and low search separately. The second experiment focused on high search. For this experiment, the population included thirty students from a Sydney public primary school who were in year six and had not been taught parallel line in geometry. The procedure was the same as before however the geometry content was a complex diagram. The groups were visual-visual, audio-visual, and audio-visual-flashing, with ten students were in each group. The results were consistent with modality theory and students who were in the audio-visual-flashing group performed better then the visual-visual group, and no differences were found between visual-visual group and the audio-visual group. Therefore for high search materials, the dual presentation mode increased performance when a visual reference was provided. The third experiment focused on low search. In this experiment the population included thirty students from a Sydney public primary school who had not been taught parallel lines in geometry. The groups included visual-visual, audio-visual, and audio-visual-flashing, and ten students were in each group. The procedure was similar to the first experiment however the geometry content was a low search diagram and only contained two labels. The groups were visual-visual, audio-visual, and audio-visual-flashing, with ten students in each group. The results revealed that the modality effect did occur with the transfer problems and the visual-visual group took more time than the audio-visual and the audio-visual-flashing group. The difference was that with the low search content the audio-visual group performed better than the visual-visual group meaning, low search materials the flashing indicator is not as beneficial. The three experiments had demonstrated that using mixed modes of presenta tion increases the effectiveness of the working memory and capacity for learning. The results indicated that when content requires a high level of search, visual indicators need to be included to free up cognitive resources and increase memory capacity. Therefore, based on the work of Jeung, Chandler, and Sweller (1997) when the computer multimedia presentations were created with a visual cue of a yellow box with a red outline was used as a visual indicator to assist users to locate where the mouse is clicking so students are not scanning the entire video screen for the mouse. In addition to visual references one version of the video included audio only and another version will contain text only to confirm the modality effect. Selecting the most appropriate part of the working memory to disseminate the information and using the auditory channel to process information via audio instead of visual text allows the visual channel to use the working memory to focus on the images and animations that coincide with the audio. It is similar to watching a news program on television, your ears are listening to the news anchor and the working memory is processing that information while your eyes are watching the corresponding footage and the brain it combining the two pieces of information together. However if put closed captioning on you are reading the same information you are hearing which is redundant. Redundancy Effect Redundancy effect can be defined as information being presented appears as both an image and as on-screen text, and the visual channel is responsible for all information while the audio channel is not used (Mayer, 2001; Barron Calandra, 2003). The distinction between the split-attention and redundancy effects hinges on the distinction between sources of information that are intelligible in isolation and those that are not. If a diagram and the concepts of functions it represents are sufficiently self-contained and intelligibly in isolation, then any text explaining the diagram is redundant and should be omitted in order to reduce the cognitive load (Kalyuga, Chandler, Sweller, 1998). Redundancy can occur with full text and full audio, full text and partial audio or partial text and full audio (Barron Calandra, 2003). The redundant information may be duplicate text and narration, a text description and a diagram or on-screen text and audio narration. The duplicate information cause s in increase in the learners working memory because the visual channel is processing the same information from multiple sources. (Kalyuga, Chandler, Sweller, 1998; Mayer, Heiser and Lonn, 2001). The redundancy effect is evident when student performance is hindered when redundant information is present, and student performance increase when the redundant information is removed (Kalyuga et all, 1998; Mayer, Heiser and Lonn, 2001; Jamet Le Bohec, 2007). The redundancy effect can be eliminated by presenting on-screen text as narration or presenting information as a diagram instead of a lengthy text explanation, and delivering information in a single mode that works complimentary with the other content be delivered (Mayer, Heiser and Lonn, 2001). Several experiments have been conducted relating to redundancy theory. One experiment conducted by Jamet and Le Boec, 2007 was designed to test the hypothesis that redundancy effect would be observed with full text and narration, and presenting sequential text would reduce the redundancy effect. The experiment had 90 undergraduate students from a psychology pool in France, with a median age of 20. The participants were randomly assigned to one of three groups; no text, full text with corresponding audio, and sequential text. The experiment started with a prior knowledge test with four general questions and two specific questions. Then the participants viewed three documents about memory functioning, the presentation lasted about 11 minutes. After the presentation the participants took a retention test twelve open-ended questions. Then they took a transfer test with twelve inferential open-ended questions. Finally, the participants had to complete a diagram by labeling components. Results revealed significance difference with the retention scores with the no-text group performing better than the full-text group and the sequential text group. Similar results were reported for the diagram completion portion of the experiment and the transfer task. There was no significant effect size to indicate that the redundancy effect would be reduced by presenting redundant text sequentially. There was a significant effect between the no-text and the other two groups for the transfer, retention, and the diagram test which validates the redundancy effect. Based on the findings from the experiment above, having on-screen text in addition to narration overloads the visual channel and decreases learning. The authors did point out that the participants had a difficult time understanding the documents presented and they could not control the presentation. Another set of experiments were conducted by Mayer and Johnson, 2008 to test the redundancy theory. The first experiment focused on short redundant text that was display on-screen.
Saturday, January 18, 2020
Reality Shows Essay
Reality shows has grown in popularity for several years and it will never slow down because of the excitement and attention it brings to the viewers. A reality show is based upon many things that go on in a daily life such as romance, drama, friendship, hate and etc. Being on a reality show may look fun but itââ¬â¢s a lot of hard work. Reality shows bring a lot of attention and the companies are making a lot of money for it because of the viewers. * Reality shows are bad, lazy and violence television. They mostly show ordinary people with no special talents doing very stupid things.which doesnââ¬â¢t make for good entertainment.They rely on humiliation and conflict to create excitement.the programmes are full of swearing, crying and argument, and often violence, drunkenness and sex. This sends a message to people that this is normal behaviour and helps to create a crude, selfish society. For example, the real world on mtv. * Its a selected group of people who live together they portray young adults, espically women, as being drunk, wild, crazy, lying, physical violence and desperate for sex, alcohol, and attention. and its sad because many people watch these shows and thats what the real world is basically about. Nobody wants for their childern to be watching that on television i know i wouldnt. It is just a bad influence on their mind n it will probbaly effecty on the way the will act. nobody wants they child like that everyone wants the best for them. thats why these kind of shows need to be blocked no longer aired or have parental controls on the channels. * Another reality show the bad girls club it focuses on seven young women who believes that other women are generally out to get her Jodie, a conservative office worker who likes to have fun after hours. Ty, a tough talking former hustler. Kerry, where her behavior has a reflect on her country music career adult entertainer. Leslie, spoiled, angry. Ripsi, and Zara, whoââ¬â¢s known in her small town as the ââ¬Å"wild child.â⬠While living in their Los Angeles house, the women try to become friends while managing with one anotherââ¬â¢s backstabbing, lying, cheating, and flirting. They all engage in their own brand of bad behavior in order to have fun, get want they want, and sometimes get even with the other women in the house. * They fight with each other for 60 minutes once a week and has a negative effect on society because it makes girls that watch the show think that it is okay to go out and fight with anyone that gets in your way. Just think about the name of the show ââ¬Å" BAD GIRLS CLUBâ⬠the all have a bad girl life style. so to me reality televison is full of it and the people that watch it need help to yes it is entertaining but the question is what are you getting out of it? how is it making your life or childern lives any better? this stuff has alot of negative effect on people. There is nothing perfect in life but its just some things you do and donot do. *Inconclusion, reality television is popular and almost everyone watches it. but the manin question is why? reality television has several flaws and entitles alot of attetion and drama. You will see the the whole concept of these script written shows is beacuse of the money for them not for you so eventaully there is no point and the viewers are helping them and they are not getting anything out of it. These are my reasons, examples and supporting reasons why reality television should be banned.
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