PSYC 2380 Lecture Notes - Lecture 11: Groupthink, Hinder, Ingroups And Outgroups
12 Nov 2020
School
Department
Course
Professor
Group Influence Part 2
Group Polarization: Do Groups Intensify Our Opinions?
Do Groups Intensify Opinions?
Group polarization experiments
Moscovici and Zavalloni (1969)
Mititoshi Isozaki (1984)
Markus Brauer, et al. (2001)
Do Groups Intensify Opinions?
Group polarization in everyday life
Schools
Accentuation effect
Communities
Self-segregation
Internet
Terrorists organizations
September 11, 2001
Explaining Polarization
Informational influence
Arguments
Active participation
Explaining Polarization
Normative influence
Social comparison
Evaluating one’s opinions and abilities by comparing oneself with
others
Pluralistic ignorance
A false impression of what most other people are thinking or
feeling, or how they are responding
Groupthink: Do Groups Hinder or Assist Good Decisions?
Mode of thinking that persons engage in when concurrence-seeking becomes so
dominant in a cohesive in-group that it tends to override realistic appraisal of
alternative courses of action
Caused by
Cohesive group
Isolation of the group from dissenting viewpoints
Directive leader
Symptoms of Groupthink
Following lead group members to overestimate their group’s might and right
Illusion of invulnerability
Unquestioned belief in the group’s morality
Symptoms of Groupthink
Following leads group members to become closed-minded
Document Summary
Evaluating one"s opinions and abilities by comparing oneself with others. A false impression of what most other people are thinking or feeling, or how they are responding. Mode of thinking that persons engage in when concurrence-seeking becomes so dominant in a cohesive in-group that it tends to override realistic appraisal of alternative courses of action. Following lead group members to overestimate their group"s might and right. Following leads group members to become closed-minded. Following leads group to feel pressure toward uniformity. Directive leadership is associated with poorer decisions. Groups do prefer supporting over challenging information. Groups make smart decisions by widely distributed conversation with members who take turns speaking. Group with diverse perspectives outperform groups of like minded experts. Group success depends both on what group members know and how effectively they can share that information. Occasionally subdivide the group, then reunite to air differences. Welcome critiques from outside experts and associates. Call a second-chance meeting to air lingering doubts.
