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Infidelity is seen as the ultimate betrayal, and many relationships are brought down by it. Around the world most of us agree that it\\u2019s wrong for a married person to have an affair, but that doesn\\u2019t seem to stop us: why? The answer could lie in our DNA. In this week\\u2019s Why Factor, Phoebe Keane hears how research into the mating habits of prairie voles could shed light on the extra marital affairs of humans and explores how we make decisions in the heat of the moment.

Guests: \\nProfessor Steven Phelps, University of Texas at Austin\\nAssistant Professor Andrea Meltzer, Florida State University\\nProfessor Lucia O\\u2019Sullivan, University of New Brunswick\\nNicolle Zapien, Professor California Institute of Integral Studies, Psychotherapist, and Sex Therapist

Presented and Produced by Phoebe Keane\\nEditor: Richard Knight