This note's aim is to investigate the sensitivity of Christakis and Fowler's claim (NEJM July 26, 2007) that obesity has spread through social networks. It is well known in the economics literature that failure to include contextual effects can lead to spurious inference on social network...

There have been numerous attempts to both document the income-health gradient in children and to understand the nature of the tie. In this paper we review and summarize existing studies and then use a unique school based panel data set from the US to attempt to further our understanding of the...

Recent evidence has suggested that popularity during high school is linked with wages during mid-life using the Wisconsin Longitudinal Study. The results were shown to be robust to a large set of individual-level heterogeneity included completed schooling, cognitive ability, and personality...

While several types of mental illness, including substance abuse disorders, have been linked with poor labor market outcomes, no current research has been able to examine the effects of childhood ADHD. As ADHD has become one of the most prevalent childhood mental conditions, it is useful to...

Using a sample of sibling pairs from the PSID-CDS, we examine the effects of sibling health status on early educational outcomes. We find that sibling developmental disability and externalizing behavior are associated with reductions in math and language achievement. Estimated spillovers for...

One of the continuing areas of controversy surrounding higher education is affirmative action. The Supreme Court has agreed to hear Fisher v. Texas, and their ruling may well influence universities' diversity initiatives, especially if they overturn Grutter and rule that diversity is no longer a...

We examine peer effects in teen childbearing among close friends, using miscarriages as a natural experiment. We use 775 women from the core sample of Add Health who had a friend with a teen pregnancy. We find a sizable negative treatment effect: a close friend’s teen birth is associated...

This article uses recently released data from a national longitudinal sample to present new evidence of the longer term effects of adolescent depression on labor market outcomes. Results suggest reductions in labor force attachment of approximately 5% and earnings reductions of approximately 15%...

Using data from the National Longitudinal Study of Adolescent Health, this study examines the impact of high school cohort composition on the educational and labor market outcomes of individuals during their early 20s and again during their late 20s and early 30s. We find that the positive...

Recent evidence has suggested links between high school popularity and wages during mid-life using the Wisconsin Longitudinal Study. This article revisits this question by first replicating the results using an alternative dataset that is very similar in structure. Similar to previous results,...