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We know that people who behave abusively towards their romantic partners are often very charming and manipulative and, initially at least, can seem perfect.
David Barash, an evolutionary biologist at the University of Washington in Seattle, US, says that the paper makes a convincing case. Journal reference: Evolution and Human Behavior (vol 29 p 149) Evolution & Human Behaviour, May 2008, Vol 29, Issue 3, pp 149-164 Male genital mutilation: an adaptation to sexual conflict Christopher G.
Wilson Abstract Male genital mutilation (MGM) takes several forms and occurs in about 25% of societies.
Male genital mutilation makes it less likely that a male will manage to father a child with another mans wife, Wilson says.
Home advantage Circumcision is one of the less painful forms of mutilation, but it is also less effective at reducing sperm competition.
In some forms of mutilation, the handicap to sperm competition is obvious.
Here are some red flags to look out for if you’re wondering if your partner or relationship is too good to be true.Clitoridectomy and vaginal infibulation serve a parallel signaling function in women, increasing a husband's paternity certainty and garnering his increased investment.Especially in societies where paternity uncertainty and reproductive conflict are high, the social benefits of MGM as a signal may outweigh its costs.There may be an evolutionary explanation, according to Christopher Wilson, of Cornell University in New York, US.It could function to reduce a young mans potential to father a child with an older mans wife, he says.