Genes may be to blame for infidelity
Some people may be genetically programmed to be unfaithful to their partner, a scientist has claimed. Professor Tim Spector, of the Twin Research Unit at St Thomas' Hospital, London, says he has evidence of a genetic component to infidelity.
Whenever I hear results of twin studies, alarm bells start ringing. It simply isn't possible to separate the genetic component of a human behaviour from an environmental (social) component. To be fair, however, Prof. Spector is not making claims for an infidelity gene.