The purpose of this article is to examine the influence of E.W. Scripture’s application of the “new psychology” to sport and physical education at the Yale psychology laboratory in the late 1800s and early 1900s. Specifically, an analysis of the influence of the new psychology on the study of the psychological aspects of sport is presented. Research and articles that studied the reaction time, accuracy, cross-education, and influence of physical training on attention and willpower are presented. Finally, the influence of Scripture’s work on the field of sport psychology is described.