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Between 25 y el 50 % of western men admit to having been unfaithful to their partner at least once. And women? Are there two typos of monogamy: one social and another sexual? Eduardo Punset joined the married couple Judith Eve Lipton, Psychiatrist at the Swedish Medical Center in Washington, and David Barash, Psychologist at the University of Washington, to discover in depth the interests of each sex in their life together.

To find out more:

* ‘The Myth of Monogamy‘, book by David P. Barash and Judith Eve Lipton.
* ‘Polygamy Left its Mark on the Human Genome‘, news article published in New Scientist.
* ‘Monogamy Is Unnatural‘, article by David P. Barash and Judith Eve Lipton in the magazine The Stranger.
* ‘Your Cheating Heart‘, interview in the New York Times.