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Updated: Jul 28, 2026

Peering into the Dynamics of Social Interactions: Measuring Play Fighting in Rats
Published on: January 18, 2013
Patterns and temporal changes in peer affiliation among aggressive and nonaggressive children participating in a
J M Hektner1, G J August, G M Realmuto
1Division of Child & Adolescent Psychiatry, University of Minnesota, USA.
Abstract:
Examined the behavior and affiliation patterns of 118 highly, moderately, and nonaggressive 7-year-old children over the course of a 6-week summer school program. During free play, participants did not selectively associate on the basis of behavioral similarity, but initial mutual friendship choices did show a preference for similarly behaved peers. Nonreciprocated friendships at the beginning and end of the program and mutual friendships at the end revealed a preference of all children to be-friend nonaggressive peers. Moderately aggressive children increased their number of mutual friendships and their association with nonaggressive peers during free play, whereas highly aggressive children lost mutual friends. The aggressiveness of a child's playmates predicted the likelihood of that child behaving inappropriately during free play. Results suggest that selective affiliation may be the result of peer rejection rather than an active process of seeking similarly aggressive peers.
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