Peer-Effects on Childhood Obesity: An Instrumental Variables Approach on Exogenously Assigned Peers

This study investigates whether peers are a contributing factor in childhood body-weight outcomes. Using an instrumental variables method on exogenously assigned peers, we find that the weight of peers within the same grade and school significantly impacts body mass index (BMI) z-score of an individual student. A typical student’s BMI z-score increases when facing heavier peers. The size of the peer-effect, however, is very modest. For a percentage point increase in the proportion of obese students in the same grade, a typical student’s BMI z-score increases by only 0.00341 standard deviations.


Issue Date:
2014
Publication Type:
Conference Paper/ Presentation
PURL Identifier:
http://purl.umn.edu/170387
Total Pages:
29
JEL Codes:
D10; I10; Z13




 Record created 2017-04-01, last modified 2017-08-27

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