Project SherlockEst. Knowledge

Paper

1976

The Group Polarization Phenomenon

David G. Myers & Helmut Lamm

Group discussion reliably pushes members' opinions toward a more extreme version of whatever they already leaned toward before talking, rather than toward the average or the moderate middle.

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FreeIntermediatelink checked 17 Sept 2026

Groundwork for

Works in the library that name this one as a prerequisite.

The Law of Group PolarizationCass R. Sunstein, 2002Extends group polarization from the psychology lab to juries, political parties and online communities, arguing that like-minded people talking mostly to each other reliably end up more extreme than any individual member began.

Filed under Social Psychology in Psychology.