Oxford Handbook of Evolutionary Psychology

The Paradox of Attractiveness Common intuition suggests that the most physically attractive individuals naturally accumulate the highest number of sexual partners. However, recent findings in evolutionary psychology tell a different story for women. While men show a linear correlation between attractiveness and partner count, women exhibit a non-linear trend. Interestingly, the most attractive women often report fewer partners than those in the middle range of the beauty spectrum. This suggests that high attractiveness provides a level of selectivity, allowing women to wait for high-quality long-term bonds rather than engaging in frequent short-term encounters. The Collapse of the Ovulatory Shift For nearly two decades, the Dual Mate Hypothesis dominated the field. It proposed that women essentially pursued a two-pronged strategy: securing a stable provider for the long term while seeking "good genes" from physically dominant men during their most fertile windows. This theory relied heavily on the idea of ovulatory shifts in preference. New research, however, failed to replicate these findings. We now understand that women’s preferences for attractive, healthy, and pro-social traits remain remarkably stable regardless of their hormonal cycle. From Genetic Raiding to Mate Switching As the old paradigm fades, the Mate Switching Hypothesis has taken its place. This framework suggests that what we often mistake for a short-term sexual strategy is actually a transition between long-term commitments. Often referred to as "monkey branching," these short-term affairs frequently involve emotional attachment. Data shows that over 70% of women in affairs report being in love with their new partner. The primary motivation is not a hunt for diverse DNA, but rather a search for a more viable long-term replacement when a current relationship fails to satisfy. Redefining Sociosexuality We must recognize the massive gap in sociosexuality—the willingness to engage in uncommitted sex—between the sexes. With a difference of 1.5 standard deviations, the overlap between men and women is minimal. When women do engage in short-term mating, the incentives are often material resources or relationship exit strategies rather than the male-typical drive for variety. Understanding these nuances helps us move toward a more empathetic and accurate view of human connection.