Collier was a delegate to the Jasper talks (1985), a significant policy workshop that became the catalyst to Collier’s career-long interest in motor development. For the past three decades, his research agenda has examined various facets of motor development that pertain to the education of typically developing children and those with identifiable disabilities. He is also interested in positive and proactive solutions to challenging behavior in school-age learners. Collier has presented his research at multiple national and international conferences concerned with the study of motor development and pedagogy.