the tendency for groups to make more-extreme decisions than their members would make as individuals. (613)

A process where group members conform to the initial attitudes of other members who already agree. go to glossary index

the tendency for groups to make decisions that are more extreme than the initial inclinations of its members

Group-produced enhancement or exaggeration of members' initial attitudes through discussion.

The exaggeration through group discussion of initial tendencies in the thinking of group members.

A group taking on the ideas of a single group member, i.e., one liberal talking, soon the whole group is liberal.

A pattern often observed in group discussions in which the attitudes of each member of the group become more extreme as a result of the discussion, even though the discussion drew their attention to arguments on the other side of the issue, arguments that plausibly might have moderated their views.

The tendency of groups to arrive at decisions that are in the same direction but are more extreme than the mean of the pre-discussion decisions of the individuals in the group.

Group polarization effects have been demonstrated to exaggerate the inclinations of group members after a discussion. A military term for group polarization is "incestuous amplification".