Sport psychology is, at once, a subcategory of psychology and an interdisciplinary specialty. Therein lies its beauty-and its challenge. The academic discipline of sport science is allied with that of psychology, addressing the biopsychosocial elements necessary to develop or enhance optimal physical performance. The further modifier, clinical, directs one toward (a) those psychological elements of physical performance that may in one way or another prevent, limit, or interfere with that optimal performance and (b) athletes' clinical problems that extend beyond specific sport-related experiences.