'High' Achievers? Cannabis Access and Academic Performance

43 Pages Posted: 23 Mar 2015  

Olivier Marie

London School of Economics - Centre for Economic Performance (CEP)

Ulf Zölitz

Maastricht University

Abstract

This paper investigates how legal cannabis access affects student performance. Identification comes from an exceptional policy introduced in the city of Maastricht which discriminated legal access based on individuals' nationality. We apply a difference-in-difference approach using administrative panel data on over 54,000 course grades of local students enrolled at Maastricht University before and during the partial cannabis prohibition.We find that the academic performance of students who are no longer legally permitted to buy cannabis increases substantially. Grade improvements are driven by younger students, and the effects are stronger for women and low performers. In line with how THC consumption affects cognitive functioning, we find that performance gains are larger for courses that require more numerical/mathematical skills. We investigate the underlying channels using students' course evaluations and present suggestive evidence that performance gains are driven by improved understanding of material rather than changes in students' study effort.

Keywords: marijuana, legalization, student performance

JEL Classification: I18, I20, K42

Suggested Citation

Marie, Olivier and Zölitz, Ulf, 'High' Achievers? Cannabis Access and Academic Performance. IZA Discussion Paper No. 8900. Available at SSRN: https://ssrn.com/abstract=2582535

Olivier Marie (Contact Author)

London School of Economics - Centre for Economic Performance (CEP) ( email )

Houghton Street
London WC2A 2AE
United Kingdom

Ulf Zölitz

Maastricht University ( email )

P.O. Box 616
Maastricht, 6200MD
Netherlands

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