Test of Self-Determination Theory in Swimmers With and Without Down Syndrome
Abstract Self-determination theory (SDT) may offer insight into the motives behind sport participation by individuals with Down syndrome (DS). The Pictorial Motivation Scale (PMS), developed by Poulin (1992), evaluated the motivation of junior athletes with (n = 15) and without DS (n = 15) participating in inclusive community-based swimming. In line with SDT, cluster analyses showed that intrinsic motivation, extrinsic motivation, and amotivation were all present in athletes with and without disabilities. Swimmers with DS scored significantly higher in intrinsic motivation than non–self-determined extrinsic motivation (−0.45, p < 0.001) and amotivation (−1.28, p < 0.001), suggesting involvement in community-based inclusive sport may promote enhanced psychological functioning in this sample. Further research may be warranted into the motivation of athletes with DS across longer periods of time.