Effects of positive and negative feedback on the motor performance of mongoloids.
D000124:Achievement; D000293:Adolescent; D002648:Child; D004314:Down Syndrome; D005246:Feedback; D005260:Female; D006801:Humans; D008297:Male; D009042:Motivation; D009048:Motor Skills; D011678:Punishment; D012057:Reinforcement, Verbal; D012201:Reward; D014796:Visual Perception