Effects of movie violence on aggression in a field setting as a function of group dominance and cohesion.

Abstract

In this quasi-experimental field study, delinquent members belonging to two cottages viewed aggressive commercial movies every evening for a week, while at the same time, subjects from two other cottages were exposed to neutral commercial movies. Behavioral observations were obtained through a nonhier-archical, minimally inferential procedure of a time-sampling nature; they were taken during a baseline week (at noon and in the evening), a treatment week (noon and evening) and a posttreatment week (noon). The main immediate effects of the violent films were an overall increase of both active behaviors and physical aggression; the effects on verbal aggression were more persistent but limited to one of the two cottages. On the other hand, more interactions occurred as an immediate consequence of viewing the films in both neutral treatment cottages; moreover, one of these two cottages also decreased its level of physical (short-term effect) and verbal (short- and long-term effects) aggression. In the aggressive treatment cottage, which was most affected, subjects who were most dominant, most popular, and least popular were influenced the most: an opposite effect was exhibited by those subjects who were judged as least aggressive by their peers. Complementary data are presented and discussed; the difference between the single individual laboratory paradigm and the existing group field paradigm is especially stressed.

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