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Women are 'genetically programmed to have affairs'

Women are predisposed by their genetics to have affairs as "back-up plans'" if their relationships fail.

The University of Texas study challenges the assumption humans have evolved to have monogamous relationships.

The team's research has put forward the "mate-switching-hypothesis" which says humans have evolved to keep testing their relationships and looking for better long-term options.

The senior author of the research, Dr David Buss, told the Sunday Times: "Lifelong monogamy does not characterise the primary mating patterns of humans.

"Breaking up with one partner and mating with another may more accurately characterise the common, perhaps the primary, mating strategy of humans."

For our distant ancestors – when disease, poor diet and minimal healthcare meant that few people lived past 30 - looking for a more suitable partner was necessary, researchers assert.

Dr Buss said:

"Affairs serve as a form of mate insurance, keeping a back-up mate should a switch become warranted in the future.’

"A regular mate may cheat, defect, die, or decline in mate value. Ancestral women lacking a back-up mate would have suffered a lapse in protection, and resources."

Name of author: 
Matt Payton

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