Cheryl Carmichael's Study on Middle-Age Happiness in New York Magazine

Science Assures It's Fine to Have Fewer Friends in Your 30s

New York Magazine, 8.13.15
According to the study, led by Cheryl L. Carmichael of Brooklyn College and the Graduate Center at CUNY, and published recently in the journal Psychology and Aging, your middle-age happiness can be predicted by two things: the quantity of friends in your 20s, and the quality of friendships in your 30s. In a way, your 50-year-old self stands to benefit both from the endless rounds of flip cup with college pals and the long talks with close friends a decade later.