title: Acquisition and retention of a motor skill by normal and retarded students.
mesh_terms: D000161:Acoustic Stimulation; D000293:Adolescent; D000367:Age Factors; D001307:Auditory Perception; D004495:Education of Persons with Intellectual Disabilities; D005246:Feedback; D005260:Female; D006801:Humans; D007361:Intelligence Tests; D007721:Knowledge of Results, Psychological; D008297:Male; D008568:Memory; D009048:Motor Skills; D011214:Practice, Psychological; D044469:Racial Groups; D012737:Sex Factors; D014796:Visual Perception