Effects of variations in auditory-visual stimulation on activity levels of severe mental retardates.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D001307:Auditory Perception; D002648:Child; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D008297:Male; D008875:Middle Aged; D014796:Visual Perception