The group polarization phenomenon.

@article{Myers1976TheGP,
  title={The group polarization phenomenon.},
  author={David Gershom Myers and Helmut Lamm},
  journal={Psychological Bulletin},
  year={1976},
  volume={83},
  pages={602-627}
}
Experiments exploring the effects of group discussion on attitudes, jury decisions, ethical decisions, judgments, person perceptions, negotiations, and risk taking (other than the choice-dilemmas task) are generally consistent with a "group polarization" hypothesis, derived from the risky-shift literature. Recent attempts to explain the phenomenon fall mostly into one of three theoretical approaches: (a) group decision rules, especially majority rule (which is contradicted by available data… Expand

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References

SHOWING 1-10 OF 181 REFERENCES
The preponderance of arguments in the risky shift phenomenon
A risky shift experiment is conducted consisting of 12 four-person groups to study the enhanced-salience-of-values mechanism of Brown's (1965) widely held values theory and Vinokur's (1971)Expand
Enhancement of Dominant Risk Tendencies in Group Discussion
Much recent research indicates that discussion predictably affects responses to choice-dilemma items. In the present experiment, 12 choice-dilemma items were discussed to consensus by 40 femaleExpand
Enhancement of Dominant Attitudes in Group Discussion.
Two studies were performed in an attempt to generalize the risky-cautiousshift phenomenon to attitudes and to test "information exchange" and "mutual reinforcement" explanations ofExpand
Interpersonal Comparison Processes in Choice Dilemma Responding
Summary Reliable group-induced response changes have been observed on choice dilemma items and, in extensions of this research, with other stimulus materials as well. The search for a theoreticalExpand
Effects of discussion on opinions concerning illegal behavior.
TLDR
On the ethical-legal dilemmas both the inmate and the college samples significantly increased their preference for the legally deviant action following discussion, although initially perceiving themselves to favor it less than their peers. Expand
Group position as a function of member attitudes. Choice shift effects from the perspective of social decision scheme theory.
500 undergraduates made decisions as individuals or 4-person groups about several attitude objects along a 7-point semantic differential scale and about several social issues along a percentageExpand
Attitude polarization, familiarization and group process
Our purpose was to gain insight into the processes linking interaction and attitude polarization. We wished to determine whether polarization might occur in an individual situation, during the taskExpand
Studies in group decision I: Social space, patterns of communication and group concensus
The discovery of the effects of risky shift focusses the interest on the study of decision processes. Nevertheless the researches carried on until now have always shown confusion between theExpand
Factors limiting the generality of the risky‐shift phenomenon
While a considerable amount of research has centered on explaining the risky shift (enhancement of risk acceptance through group discussion; see, for example, Dion, Baron, and Miller, 1970), fewExpand
Discussion arguments, information about others’ responses, and risky shift
The discussion-arguments and information-exchange explanations of the risky-, cautious-shift phenomenon were tested in three conditions. An information-exchange-only condition provided mere exposureExpand
...
1
2
3
4
5
...