title: A study of operant conditioning under delayed reinforcement in early infancy.
mesh_terms: D000367:Age Factors; D001307:Auditory Perception; D002657:Child Development; D003071:Cognition; D003216:Conditioning, Operant; D004193:Discrimination Learning; D005106:Exploratory Behavior; D005108:Extinction, Psychological; D005246:Feedback; D005260:Female; D006225:Hand / Q000502:physiology; D006801:Humans; D007223:Infant; D008297:Male; D008568:Memory; D009119:Muscle Contraction; D005082:Physical Exertion; D012055:Reinforcement Schedule; D012054:Reinforcement, Psychology; D014796:Visual Perception