title: Sex differences in lateralization in the domestic chick.
abstract: Age-related changes over the first 8 days of life in the intensity of fear response which is evoked in domestic chicks by a standard visual stimulus follow the same course in male chicks using the right eye and in female chicks using the right or left eye. Changes in left-eyed male chicks follow an entirely different course. Tests involving visual discrimination and habituation confirm the specialization of the (right-sided) neural structures fed by the left eye in males. This pattern of sex difference is formally comparable with the specialization of the right hemisphere in boys described by Witelson (Science 193, 425-427, 1976).
mesh_terms: D000375:Aging; D000818:Animals; D002645:Chickens; D003118:Color Perception; D004292:Dominance, Cerebral; D005239:Fear; D005260:Female; D008297:Male; D012737:Sex Factors