In this collection of papers the psychology of human behavior and performance is examined as it is revealed by the action and interaction of athletes, coaches, and physical education teachers actively engaged in competitive and noncompetitive sports. The following subjects are discussed: (1) competitive sport and personality development; (2) perception of personal characteristics by physical education teachers and coaches; (3) human factors in sports systems: suggested models for analysing athlete-coach interaction; (4) towards psychological competence and social cooperation as sports motivations; (5) some variables affecting team success in soccer; (6) psychodynamics and personality in sport: status and values; (7) psychological aspects of sport with particular reference to variation in performance; (8) an analysis and application of game and human performance theory to sport and competition; (9) a systems analysis approach to fencing; (10) the relevance of space perception to sports psychology; and (11) the contribution of physical activity to the psychological well-being of minority racial groups. Each paper has appended lists of references. (JD)