The purpose of the present study was to develop a valid and reliable group cohesion instrument that measures both task-related and social-related forces that are presumed to exist in interacting sport groups. Male and female intercollegiate basketball players (N = 196) completed a 41-item sport cohesion instrument. Results from two different factor analytical techniques revealed four robust common factors which accounted for greater than 80% of the variance of the total common factor structure. The four derived common factors were labeled Attraction to the Group, Unity of Purpose, Quality of Teamwork, and Valued Roles. In addition, the internal consistency of the adjusted 22-item sport cohesion instrument was found to be high, yielding a .93 alpha reliability coefficient. The findings suggest that group cohesion in intercollegiate basketball teams is multidimensional in nature, consisting of common goals, valued roles, teamwork that is complimentary to the goals the group is striving to achieve, and feelings of satisfaction and/or identification with group membership.