Peer Effects and Multiple Equilibria in the Risky Behavior of Friends

  title={Peer Effects and Multiple Equilibria in the Risky Behavior of Friends},
  author={David Giuliano and Peter S. Bearman and Kathleen Mullan Harris},
We study social interactions in the initiation of sex and other risky behaviors by best friend pairs in the Add Health panel. Focusing on friends with minimal experience at the baseline interview, we estimate bivariate ordered-choice models that include both peer effects and unobserved heterogeneity. We find significant peer effects in sexual initiation: the likelihood of initiating intercourse within a year increases by almost 5 percentage points (on an 11% base rate) if one’s friend also… CONTINUE READING


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