Cover: Does Marijuana Use Impair Human Capital Formation?

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 2003

by Rosalie Liccardo Pacula, Jeanne S. Ringel, Karen E. Ross

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.

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