Career success and relationships are both undoubtedly important to women’s happiness, but many young and ambitious women value their personal lives more than their career aspirations. And that feeling intensifies over time.

In a 2009 study in the Journal of Personality and Social Psychology, David Lubinski and his team at Vanderbilt found that in a sample of academically gifted young adults, women became less career-oriented than men over time. As they approached middle age, women also placed more value than men on spending time with family, community and friends. These differences became more pronounced with parenthood.

My mother’s advice—Susan Patton’s advice—may not be right for every woman, but it was right for me. In the fall of my senior year, I started dating a brilliant man and we’re still together. If I were unattached today, I’m not sure what I would do. The post-college dating scene can be rough: Getting to know someone often means shouting across a noisy bar or scrolling through Internet dating profiles. Finding a partner in college is easier.

Mom was right.