12 4 Social Influence from Opinion Expression AND New Information
Combined Social Comparison / Persuasive Arguments
BOTH opinion expression and new information can affect the opinions of group members.
Social influence is a result of two aspects of group interaction
Social comparison process that leads to biased group discussion.
New (but often biased) information that group members learn from one another when they discuss the options.
What members think BEFORE group discussion is importantearly opinions and arguments predict a groups decision.
Input-Process-Output Model of Group Discussion
Social comparison theory combines with persuasive arguments theory to account for group polarization.
Good SUPPORTING EVIDENCE to Support Proposal
Ability to explain social influence in general.
13 5 Social Influence from GROUP DISCUSSION
Group discussion itself has a larger role in the influence process
When people come into groups they already have opinions about what they like best.
What HAPPENS during group discussion is of utmost importance.
Members initial opinions may relate only slightly to their final opinions.
FOCUS on CONTENT of group discussion (not on prediscussional opinions) to predict outcomes
Cannot explain why participants bring up new arguments any better than persuasive arguments theory.
Should group discussion be given such a large role in the social influence process
14 The Valence Model
All proposals in groups have levels of acceptability which group discussion both governs and reflects.
Positive and Negative Evaluations of Ideas
Thresholds of Acceptability
15 Social Influence Conclusions
No single theory about group polarization is absolutely successful.
Valid theories regarding group decision making must account for two (2) propositions
Individual opinions are most important group decisions are primarily a result of the opinions of group members.
Individual opinions CHANGE as a result of group discussion (social learning).
General Social Influence Theories
No Social Influence (social decision schemes)
Opinion Expression (social comparison)
New Information (persuasive arguments)
Opinion Expression and New Information
Structurational Theory (group discussion)
The Valence Model
Universal Social Influence Theory
General Propositions Conclusions
17 Coming Soon
GROUP DECISION MAKING
The study of GROUP PROCESS
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