The white-handed gibbon comes closest to humans in the study, with a monogamy rate of 63.5%. It’s the only other top-ranked ...

Biological anthropologists and evolutionary psychologists commonly take it for granted that human monogamy has a biological basis. Desmond Morris was an influential early advocate. His 1967 ...

Alan Dixson has, however, noted an additional indicator: In polygynous primate species, males tend to have distinctive facial adornment of various kinds, and men score unusually highly, notably ...