Peer Effects on Childhood Obesity from a Physical Activity and Dietary Intervention Program

Objectives: The purpose of this research is to estimate peer effects on third grade students’ BMI and to investigate the social and physiological explanations for such effects. Methods: The BMI of students participating in a childhood obesity intervention program is used to assess peer effects on students’ BMI within the framework of identification of endogenous social effects. Two-stage instrumental variable models are applied using the data before and after the intervention program, and further peer effects are compared by gender and two BMI categorization groups: improvement versus non-improvement. Results: Strong peer effects are found for the overall sample, and for females and males in general. However, when classifying students into improvement versus non-improvement groups, the peer effect is only found among females who are categorized in the improvement group and males in the non-improvement group. Males are more likely to be influenced by their interactions with peer friends towards the direction of unhealthy behavior; females, on the contrary, are more likely to be influenced by interaction with peer friends towards the direction of healthy behavior. Conclusions: Peer effects are found for students aged 8-11, with gender differences in the psychological and social behavioral motivations.


Issue Date:
2016
Publication Type:
Conference Paper/ Presentation
PURL Identifier:
http://purl.umn.edu/229803
Total Pages:
24
JEL Codes:
D10; D71; I10




 Record created 2017-04-01, last modified 2017-08-28

Fulltext:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)