Lec12 - Goals of Group Interaction Lecture To review past...

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To review past thinking and findings about group influence (performance). To encourage you to think critically about factors that affect group and individual performance. To explain why my lectures always go better when I give them alone, in the shower, than when I give them in front of a bunch of people. Goals of Group Interaction Lecture
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Tripplett (1898) Bike riders ride faster in races against others than when alone.
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Performance in Groups vs. Alone 0 5 10 15 20 25 30 In Groups Alone Physical Intellective Simple Complex Performance Learning Dominant Non-Dominant
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Bob Zajonc’ Theory of arousal effects on production of dominant and non- dominant responses
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Mere Presence of Others (E.g. an audience) Arousal Increases Dominant Responses Inhibits Non-Dominant Responses Well-learned tasks (Correct > Incorrect ) Poorly learned tasks (Incorrect > Correct ) Good Performance Poor Performance
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Zajonc and Sales Study People were presented with words, from one to 16 times. (1 = non-dominant, 16 = dominant) Later they were asked to recall those words either while alone, or in the presence of others. When alone, subjects recalled equal numbers of frequent (dominant) words and infrequent (non- dominant) words.
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0 5 10 15 20 25 30 35 Alone Audience Frequent (Dominant) Infrequent (Non-dominant Zajonc and Sales Study
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Zajonc and Sales Study People were presented with words, from one to 16 times. (1 = non-dominant, 16 = dominant) Later they were asked to recall those words either while alone, or in the presence of others. When alone, subjects recalled equal numbers of frequent (dominant) words and infrequent (non- dominant) words. But when there were others present (an audience), subjects were much more likely to remember the most frequent (dominant) words!
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0 5 10 15 20 25 30 35 Alone Audience Frequent (Dominant) Infrequent (Non-dominant Zajonc and Sales Study
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Mere presence of others or evaluation apprehension? Blindfolded audience produces no effects. Present, but unable to evaluate Expert Audience creates larger effects. Cheering and booing creates larger effects.
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This note was uploaded on 03/27/2011 for the course ECON 252 taught by Professor Robertholand during the Spring '08 term at Purdue.

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Lec12 - Goals of Group Interaction Lecture To review past...

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