Working Paper: CEPR ID: DP7851
Authors: Sandra Black; Paul J. Devereux; Kjell G. Salvanes
Abstract: A variety of public campaigns, including the "Just Say No" campaign of the 1980s and 1990s that encouraged teenagers to "Just Say No to Drugs", are based on the premise that teenagers are very susceptible to peer influences. Despite this, very little is known about the effect of school peers on the long-run outcomes of teenagers. This is primarily due to two factors: the absence of information on peers merged with long-run outcomes of individuals and, equally important, the difficulty of separately identifying the role of peers. This paper uses data on the population of Norway and idiosyncratic variation in cohort composition within schools to examine the role of peer composition in 9th grade on longer-run outcomes such as IQ scores at age 18, teenage childbearing, post-compulsory schooling educational track, adult labor market status, and earnings. We find that outcomes are influenced by the proportion of females in the grade, and these effects differ for men and women. Other peer variables (average age, average mother?s education) have little impact on the outcomes of teenagers.
Keywords: education; peer effects
JEL Codes: I21; J23
Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.
| Cause | Effect |
|---|---|
| proportion of females in a grade (I24) | individual outcomes (I14) |
| proportion of females in a grade (I24) | women’s outcomes (J16) |
| proportion of females in a grade (I24) | men’s outcomes (I24) |
| average age of classmates (A21) | individual outcomes (I14) |
| average maternal education (I24) | individual outcomes (I14) |