Tiziano Arduini, Alberto Bisin, Onur Ozgur, Eleonora Patacchini, 27 November 2019

Smoking and alcohol use are widespread among adolescents in the US and are linked to negative socioeconomic effects.While existing research has separately looked at the dynamic choice and the social interactions that shape adolescent risky behaviours, this column considers both components in a dynamic social interactions model. Looking at alcohol and smoking use in a school environment, it finds that addiction and peer effects are more than twice as important as the effect of individual preferences in shaping risky behaviour and that students take into account the amount of time they have left in the school system.

Hope Corman, Nancy Reichman, Susan Averett, 06 August 2010

Obesity and teenage sex have become social and public health issues in developed countries. This column looks at the effects of being overweight on attitudes to sex among teenage girls in the US. While obesity is associated with less vaginal intercourse, overweight teenage girls are at least 15% more likely to have had anal sex, with a high chance of sexually transmitted disease.

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