Dollars and Sex: How Economics Influences Sex and Love: Summary & Key Insights

When people enter the dating scene, they instinctively start making choices that economists would recognize immediately as market behavior. In any 'dating market,' there are buyers and sellers, even if that language feels unromantic. The supply and demand for desirable traits—physical attractiveness, intelligence, kindness, career potential—create equilibrium patterns that shape who ends up with whom.

Part of this stems from what I call the 'market ratio'—the balance between men and women in a given dating environment. In a city where there are far more single women than men, men hold greater bargaining power, and vice versa. This imbalance affects not only dating strategies but also the definition of standards. For example, when women outnumber men, they often face pressure to adjust expectations or compete more intensely. Conversely, when men are more abundant, women gain leverage to be more selective.

Attraction itself has its own economics. We can think of looks, personality, and resources as attributes with measurable economic value. Studies have shown correlations between physical attractiveness and income, but also between attractiveness and selectivity in partners. These findings suggest that the 'price' of being single or partnered shifts depending on how a person is valued in this market. Yet this doesn’t mean romance is reduced to calculation—it simply means that our feelings emerge within a system of incentives we subconsciously understand.

Competition is an unavoidable feature of any market, including the market for love. People enhance their 'dating capital'—what I describe as the combination of their social status, physical attributes, and emotional intelligence—to improve their chances. What’s fascinating is how this competition drives social behavior, from fashion and fitness to the cultivation of social networks.

Economic framing helps explain why shifts in gender roles or economic independence can change dating behavior. For instance, as women’s earning power rises, their preferences—and men’s—begin to shift. Women with higher incomes tend to be more selective, valuing compatibility and emotional stability over financial security. Meanwhile, men seek partners whose values align with egalitarian lifestyles, reflecting new definitions of what partnership means.

Competition also helps explain cultural norms that evolve over time. When opportunities expand for both genders, partnership ceases to be an economic necessity and becomes a choice grounded in shared fulfillment. This shift in incentives explains, in part, why marriage rates decline as societies grow wealthier and more gender-equal. When the rewards of single life grow comparable to those of married life, people make different—but equally rational—choices.