Sexual dimorphism

Human physical appearance

Developmental psychology

Philosophy

Sociology

Psychology

Neuroscience

Perception

Face (sociological concept)

Object (grammar)

Social science

Linguistics

Social psychology

Biology

Zoology

Infant Behavior and Development

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.

Sex differences in human neonatal social perception