Using data from the National Longitudinal Study of Adolescent Health, this study examines the relationship between school-year employment and academic performance of young adolescents under age 16. Ordinary least squares estimates show a significant positive relationship between modest hours of...

A recent study by Rees and Sabia (2011) found migraine headache was negatively related to educational attainment even after accounting for the influence of family-level unobservables. The current study explores whether this relationship is attributable to unmeasured individual heterogeneity in...

A number of studies have shown that childhood speech disorders such as stuttering are associated with lower test scores and educational attainment. However, it is unclear whether these associations are causal in nature or whether they can be explained by difficult-to-measure heterogeneity at the...

It has been argued that high school sports participation increases motivation and teaches teamwork and self-discipline. While several studies have shown that students who participate in athletic activities perform better in school than those who do not, it is not clear whether this association...