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Group polarization
In social psychology, group polarization refers to the tendency for groups to make decisions that are more extreme than the initial inclination of its members. These more extreme decisions are towards greater risk if individuals' initial tendencies are to be risky and towards greater caution if individuals' initial tendencies are to be cautious. The phenomenon also holds that a group's attitude toward a situation may change in the sense that the individuals' initial attitudes have strengthened and intensified after group discussion.
== Overview ==
Group polarization is the phenomenon that when placed in group situations, people will make decisions and form opinions to more of an extreme than when they are in individual situations. The phenomenon has shown that after participating in a discussion group, members tend to advocate more extreme positions and call for riskier courses of action than individuals who did not participate in any such discussion. This phenomenon was originally coined ''risky shift'' but was found to apply to more than risk, so the replacement term ''choice shift'' has been suggested.
The importance of group polarization is significant as it helps explain group behavior in a variety of real-life situations. Examples of these situations include public policy, terrorism, college life, and violence. For instance, group polarization can largely be seen at political conventions which are broadcast nationwide before a large election. Generally, a political party holds the same ideals and fundamentals. At times, however, individual members of the party may waver on where they stand on smaller subjects. During a political convention, the political party as a group is strongly united in one location and is exposed to many persuasive speakers. As a result, each individual in the political party leaves more energized and steadfast on where the party as a whole stands with regards to all subjects and behind all candidates, even if they were wavering on where they stood before hand. The phenomenon is also largely observed in the decision-making of a jury, particularly when considering punitive damages in a civil trial. Studies have shown that after deliberating together, mock jury members often decided on punitive damage awards that were either larger or smaller than the amount any individual juror had favored prior to deliberation.〔 The studies indicated that when the jurors favored a relatively low award, discussion would lead to an even more lenient result, while if the jury was inclined to impose a stiff penalty, discussion would make it even harsher. Moreover, in recent years, the Internet and online social media have also presented opportunities to observe group polarization and compile new research. Psychologists have found that social media outlets such as Facebook and Twitter demonstrate that group polarization can occur even when a group is not physically together. As long as the group of individuals begins with the same fundamental opinion on the topic and a consistent dialogue is kept going, group polarization can be observed.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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