title: Internal-external control of reinforcement and participation in team, individual, and intramural sports.
mesh_terms: D000293:Adolescent; D006126:Group Processes; D006801:Humans; D007389:Internal-External Control; D010551:Personality; D010806:Physical Education and Training; D011581:Psychological Tests; D012054:Reinforcement, Psychology; D012649:Self Concept; D013177:Sports