Being asked to give the Charles H. McCloy research lecture is one of the highlights of the author's academic career. Although McCloy's primary area of expertise was measurement and the analysis of motor skills, he also shared an avid interest in youth development through sport and physical activity. In this article, the author features youth sport…

Aspects of information feedback and practice conditions were studied to gain insight into processes underlying the observational learning of motor skills. A major purpose was to test whether subjects observing a practice variability strategy would perform better than those observing a model practicing under constant conditions. (Authors/PP)