We investigate peer effects in weight gain by exploiting a natural experiment, roommate assignments of 751 male and 845 female first-year college students. Results indicate that females are subject to peer influence in weight gain, with little evidence of peer effects for males. Peer influences...

Using annual cross-sectional data on over 100,000 adolescents aged 12–17, we studied academic and behavioral outcomes among those who were and were not likely affected by FDA warnings regarding the safety of antidepressants. Compared to other adolescents, adolescents with probable depression...