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The impact of raising the minimum legal drinking age on academic achievement and risky behaviour: A difference-in-discontinuities approach

Author

Listed:
  • Alonso-Armesto, Luis
  • Cáceres-Delpiano, Julio
  • Lekfuangfu, Warn N.

Abstract

This study evaluates the impact of raising Spain’s Minimum Legal Drinking Age (MLDA) from 16 to 18 on teenagers’ academic performance, substance use, and peer behaviours. Teenagers turning 16 after the reform could no longer consume alcohol legally. We estimate the effects using a difference-in-discontinuities design comparing outcomes for teenagers near the age cutoff (15- and 16-year-olds) before and after its implementation. Evidence from PISA data shows substantial gains in mathematics and science achievement, concentrated among male students and those from lower socioeconomic backgrounds. National survey data on teenage substance use supports that these gains stem from reductions in alcohol consumption, intoxication, and other substance use, consistent with a mechanism linking substance use to academic outcomes. We also document declines in alcohol and drug use within peer networks, indicating peer spillovers as a key channel amplifying individual effects.

Suggested Citation

  • Alonso-Armesto, Luis & Cáceres-Delpiano, Julio & Lekfuangfu, Warn N., 2026. "The impact of raising the minimum legal drinking age on academic achievement and risky behaviour: A difference-in-discontinuities approach," European Economic Review, Elsevier, vol. 185(C).
  • Handle: RePEc:eee:eecrev:v:185:y:2026:i:c:s0014292126000450
    DOI: 10.1016/j.euroecorev.2026.105301
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    JEL classification:

    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health
    • I12 - Health, Education, and Welfare - - Health - - - Health Behavior
    • I21 - Health, Education, and Welfare - - Education - - - Analysis of Education

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