1. Copyright © Allyn & Bacon 2007
I CAN
Summarize: The Asch Effect, The Milgrim Experiment, the Stanford Prison Experiment, The Lucifer Effect
Apply groupthink to situations
Copyright © Allyn & Bacon 2007

2. Copyright © Allyn & Bacon 2007
Conformity
The tendency for people to adopt the behaviors and attitudes of others in a group.
Copyright © Allyn & Bacon 2007

3. Copyright © Allyn & Bacon 2007
The Asch Effect
Tendency for people to conform, even if they are aware they are incorrect.
Copyright © Allyn & Bacon 2007

4. Conformity: The Asch Studies
Which line matches the line on the left? A 1 2 3
Standard line
Comparison lines
Copyright © Allyn & Bacon 2007

5. Conformity: The Asch Studies
What would you say if you were in a room full of people who all picked line number three? A 1 2 3
Standard line
Comparison lines
Copyright © Allyn & Bacon 2007

6. Copyright © Allyn & Bacon 2007
Conformity
No opposition (control)
Correct estimated (percent)
100 80 60 40 20
With partner
Alone against majority
Critical trials 1 2 3 4 5 6 7 8 9 10 11 12
Copyright © Allyn & Bacon 2007

7. Copyright © Allyn & Bacon 2007
Heroic Defiance
Those who are able to resist the group conformity in the Asch Experiment
Copyright © Allyn & Bacon 2007

8. Group Characteristics That Produce Conformity
Ashe identified three factors that influence whether a person will yield to pressure:
The size of the majority
The presence of a partner who dissented from the majority
The size of the discrepancy (between the correct answer and the majority position)
Copyright © Allyn & Bacon 2007

9. Copyright © Allyn & Bacon 2007
Groupthink
In “groupthink,” members of the group attempt to conform their opinions to what each believes to be the consensus of the group.
Copyright © Allyn & Bacon 2007

10. Conditions Likely to Promote Groupthink
Isolation of the group
High group cohesiveness
Dictating leadership
Lack of norms requiring methodical procedures
Homogeneity of members’ social background and ideology
High stress from external threats with low hope of a better solution than that of the group leader
Copyright © Allyn & Bacon 2007

11. What is Bad About Groupthink
The group agrees without critically testing, analyzing, and evaluating ideas.
Individual creativity, uniqueness, and independent thinking are lost.
This has led to things as the Challenger Disaster and Pearl Harbor 
Copyright © Allyn & Bacon 2007

13. Copyright © Allyn & Bacon 2007
Zimbardo evil (lucifer effect) video
Copyright © Allyn & Bacon 2007

14. The Milgram experiment
The Milgram experiment
Copyright © Allyn & Bacon 2007

15. Copyright © Allyn & Bacon 2007
The bystander effect
Copyright © Allyn & Bacon 2007

16. Copyright © Allyn & Bacon 2007
CAN I?
Summarize: The Asch Effect, The Milgrim Experiment, the Stanford Prison Experiment, The Lucifer Effect
Apply groupthink to situations
Copyright © Allyn & Bacon 2007