Tangible rewards in assessing auditory discrimination performance of mentally retarded children.
D000161:Acoustic Stimulation; D000293:Adolescent; D000367:Age Factors; D001288:Attention; D001307:Auditory Perception; D002648:Child; D003216:Conditioning, Operant; D004193:Discrimination Learning; D004495:Education of Persons with Intellectual Disabilities; D005246:Feedback; D006801:Humans; D011214:Practice, Psychological; D011581:Psychological Tests; D012201:Reward; D013060:Speech; D013637:Tape Recording