Scientists have found that the pleasure women get from making love is directly linked to the size of their partner’s bank balance. They found that the wealthier a man is, the more frequently his partner has orgasms. “Women’s orgasm frequency increases with the income of their partner,” said Dr Thomas Pollet, the Newcastle University psychologist behind the research. He believes the phenomenon is an “evolutionary adaptation” that is hard-wired into women, driving them to select men on the basis of their perceived quality.