Twelve groups containing eight subjects each participated in an experiment to determine the extent to which influence, attitudes, task orientation, physical attraction, and contribution toward group goals influenced the intensity to which individuals were attracted toward each other on a work or social basis. Individuals who were rated highly by their peers on these criteria tended to choose other highly rated individuals as work and social companions, and subjects who were rated low by their peers tended to reject other persons rated low as social and work companions.