Examines relative efficacy of dissonance theory and interpersonal attraction theory over random composition in composing groups that will work best in group therapy. Treatment variables were a tape-recorded treatment condition, a placebo condition, and a no-treatment control condition. No clear support for either theory of group support was found.…

The intent of this paper is to illustrate by example how the concept of group cohesiveness, which has largely been developed and utilized in laboratory experimentation, can serve both a predictory and an explanatory function in field studies. (Author)

This paper reports on the relationships between group composition, leadership and decisions through a study of small groups engaged in preferential bargaining about problems with open solution sets. The relationships were analyzed and can be compared best against the background of traditional approaches. (Author)