Sexual selection, Machiavellian intelligence, and the origins of psychosis.

Bibliographic Collection: 
MOCA Reference, APE
Publication Type: Journal Article
Authors: Crow, T J
Year of Publication: 1993
Journal: Lancet
Volume: 342
Issue: 8871
Pagination: 594-8
Date Published: 1993 Sep 4
Publication Language: eng
ISSN: 0140-6736
Keywords: Brain, Female, Fertility, Humans, Intelligence, Machiavellianism, Male, Psychotic Disorders, Selection, Genetic, Sex Characteristics

According to Darwin's theory of sexual selection some features that differentiate the two sexes evolve by a process of "male competition" and "female choice". The sex difference in age of onset of psychotic illness in man may relate to a sexual dimorphism in cerebral organisation (the male brain being more lateralised or asymmetrical than the female brain), a difference consistent with a role for sexual selection in the evolution of the human brain. Differing criteria (reflected in a cross-culturally stable difference in mean age at marriage) in males and females for selecting personality characteristics in a mate may generate diversity in the balance of growth between the hemispheres, and this could maintain the high and relatively constant rates of psychosis in human populations.

Alternate Journal: Lancet
Related MOCA Topics: