Men who had sex to raise their self-esteem were less satisfied, as were men who had sex to get goods, favors or other resources.

Women had a broader range of associations, the researchers found. The connection between love/commitment and satisfaction was less strong for women than for men, though it was still present. Women who had sex to express something to their partner, like gratitude or apology, were also more satisfied.

Like men, women who had sex to acquire a self-esteem or resource boost were less satisfied. Having sex to have a new and exciting experience was also associated with less satisfaction.