Does Marijuana Use Impair Human Capital Formation?
Published in: NBER Working Papers, no. 9963 / (Cambridge, Ma: National Bureau of Economic Research, Sep. 2003), 34 p
Posted on RAND.org on December 31, 2002
In this paper the authors examine the relationship between marijuana use and human capital formation by examining performance on standardized tests among a nationally representative sample of youths from the National Education Longitudinal Survey. The authors find that much of the negative association between cross-sectional measures of marijuana use and cognitive ability appears to be attenuated by individual differences in school attachment and general deviance. However, difference-in-difference estimates examining changes in test scores across 10th and 12th grade reveal that marijuana use remains statistically associated with a 15% reduction in performance on standardized math tests.