The Group Size-Cohesion Relationship in Minimal Groups

Four studies were undertaken to investigate the relationship between cohesion and group size in exercise groups. Study 1 compared the perceptions of cohesiveness of members of small and large exercise classes assessed in the eighth week of group development in a 13-week session. Study 2 compared the perceptions of cohesiveness of members of small and large exercise classes assessed in the third week of group development in a 13-week session. Study 3 used a longitudinal design to assess the possible changes in perceptions of cohesiveness of members of small and large groups over time. The purpose of Study 4 was to determine how an intervention program focusing on team-building principles would influence perceptions of cohesiveness in small and large exercise classes. It was concluded that perceptions of task and social cohesion are greater in smaller groups, and that a team-building program can offset the negative impact of increased group size.