title: Response differentiation in infants: a sex difference in learning.
mesh_terms: D000367:Age Factors; D003216:Conditioning, Operant; D005108:Extinction, Psychological; D005133:Eye Movements; D005260:Female; D006257:Head / Q000502:physiology; D006801:Humans; D007223:Infant; D008297:Male; D009043:Motor Activity; D012201:Reward; D012737:Sex Factors; D014796:Visual Perception