06/07/2011 07:54 BST | Updated 05/09/2011 06:12 BST

What Makes People Cheat?

We've all seen the headlines about cheating footballers and love-rat actors - recent reports about celebrity super-injunctions and Arnie's secret 'lovechild' are just the latest twists on an age-old tale. But have you ever wondered why so few of these salacious stories feature women in the role of the unfaithful villain?

A group of researchers at a Dutch university did and they set out to investigate whether gender really is as big a factor as we think it is. Their conclusion, published in Psychological Science, may surprise you: when it comes to cheating, it's power, not gender, that's the most important factor.