Male college students were first angered by a confederate's critical evaluation of their autobiographical letters. They were then given one of three procedures designed to reduce hostile aggression: an expression of their feelings; a reinterpretation of the criticism; and a combination of expression and reinterpretation. (Author)

Black first-and second-grade students (N=40) were given instructions intended to induce possessiveness for both a designated toy and a play area. Each subject then surreptitiously observed an experimental confederate dressed in a clown costume play with either the designated toy or another toy. Results are discussed. (Author)

Kindergarten children (N=90) were given opportunities to report to their class during "sharing time" the cooperative or friendly behaviors of their peers which had occurred during the day. Cooperative behavior increased and aggressive acts decreased when peers reported prosocial behavior to the class. (Author)

The interpersonal conditions which may maintain a child's aggression in the family were investigated by observing immediate, ongoing interactions in families of normal and aggressive adolescent sons. Normal-son families (N=6) and aggressive-son families (N=6) were videotaped engaging in a 50-minute discussion of questionnaire items designed to…