Et forsøg med nyfødte babyer viste, at drenge kiggede længere på en mekanisk genstand, mens piger kiggede længere på et ansigt. Da babyerne endnu ikke var påvirket af kultur og opdragelse, tyder resultaterne på, at forskelle i social adfærd delvist har en biologisk oprindelse.
Titel på undersøgelse:
Sex Differences in Human Neonatal Social Perception.
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Hele abstrakt på originalsprog:
Sexual dimorphism in sociability has been documented in humans. The present study aimed to ascertain whether the sexual dimorphism is a result of biological or socio-cultural differences between the two sexes. 102 human neonates, who by definition have not yet been influenced by social and cultural factors, were tested to see if there was a difference in looking time at a face (social object) and a mobile (physical-mechanical object). Results showed that the male infants showed a stronger interest in the physical-mechanical mobile while the female infants showed a stronger interest in the face. The results of this research clearly demonstrate that sex differences are in part biological in origin.