SOCPSY 1Z03 Lecture Notes - Lecture 19: Groupthink, Penrod
23 Nov 2016
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Document Summary
A type of social influence involving a change in belief/behaviour in order to fit in with a group. Allport 1924, odor study: participants rated pleasantness of an odor, rating were more extreme when the participants were alone than in a group. Moderation effect (having people around us causes us to change our responses: conclusion: people adjust responses in the presence of others. In 12/18 tests, the confederates gave the wrong answer. Average participant error rate is 33% (1% in control group alone) Conformity in critical trails shown in group is 75% Informational influence: group members assessment is used to judge reality, accept others information as valid evidence of reality. This type of influence occurs especially when members need to reduce uncertainty. Size of majority: as the group gets bigger, the error rate increase. Unanimity averages out after a certain time: group pressure going against the grain.
