The vast majority of published research articles on adapted physical education between the years 1930 through 1969 were descriptive in design. During that 39-year span, 63 articles on adapted physical education appeared in Research Quarterly. Other journals that included adapted physical education studies were Training School Bulletin, American Journal of Mental Deficiency, Mental Retardation, Journal of the American Medical Association, Behavior Therapy, American Annals of the Deaf, Comparative Psychological Monographs, American Journal of Psychology, Perceptual and Motor Skills, and Exceptional Children.