In the field of sport psychology, individual participant motivation has been studied and modeled. Vallerand (1997) posited a model consisting of two types of motivation, intrinsic and extrinsic. If someone self-motivates, they work hard for themselves and their goals and in turn will have more satisfaction with their sport and self: They are intrinsically motivated, seeking fun, pleasure, and excitement. If someone is externally motivated, they seek material rewards or the attention of others. Self-determination theory (Ryan and Deci, 2000) has applied these types of motivation as well as a third, amotivation. An athlete who is amotivated is ambivalent or unsure of the reason for staying involved in the sport. For athletes involved in team sports, do intrinsic motives, extrinsic motives, and amotivation for sport participation predict positive or negative outcomes (e.g., satisfaction, persistence, burnout)? It is hypothesized that intrinsic motives will predict positive outcomes while extrinsic motives and amotivation will be predictors of negative outcomes. This is a replication of an experiment reported by Bhatnagar and Costas (2008), and that method is used in this study. To assess motivation, active members of the team sport of women’s roller derby were surveyed using the 28-item Sport Motivation Scale (SMS) (Pelletier, et.al, 1995). The athletes responded to the question “why do
you practice your sport?”