The purpose of the present study was to examine how the mix of ability, experience, and personality impacts three types of team performance: technical-administrative task performance, leadership task performance, and contextual performance. Relationships were tested using data collected from student management teams, who were required to plan and supervise the preparation and service of meals in a cafeteria-style dining room patronized by university students, staff, and faculty. Results revealed that both team- and task-related composition variables predicted leadership and contextual performance. Specifically, grade point average was significantly related to technical-administrative task performance, and extraversion, neuroticism, and grade point average were related to leadership task performance. Agreeableness and restaurant experience predicted contextual performance. Surprisingly, conscientiousness did not account for significant variance in any of the three types of performance measured. The implications of these findings for the study of team performance in organizations are discussed. Copyright © 2002 John Wiley & Sons, Ltd.