Psychological and physiological adaptation to human sperm competition
- Shackelford, T. K., Pound, N., & Goetz, A. T. (2005).
Psychological and physiological adaptation to human sperm
competition. Review of General Psychology, 9, 228-248.
"Postcopulatory competition between males, in the form of sperm
competition, is a widespread phenomenon in many animal species.
The extent to which sperm competition has been an important
selective pressure during human evolution remains controversial,
however. We review critically the evidence that human males and
females have psychological, behavioral, and physiological
adaptations that evolved in response to selection pressures
associated with sperm competition. We consider, using evidence
from contemporary societies, whether sperm competition is likely
to have been a significant adaptive problem for ancestral humans
and examine the evidence suggesting that human males have
physiological and psychological mechanisms that allow for
prudent sperm allocation in response to variations in the risk
of sperm competition."
Ian Pitchford PhD CBiol MIBiol