Are smart kids more likely to use drugs?

An ambitious new study suggests a surprising link between a child's IQ and his use of illegal substances as an adult

Classroom know-it-alls
(Image credit: CORBIS)

Smart kids are more likely to use drugs such as marijuana and cocaine when they grow up — and the likelihood is stronger among females than males — according to a new British study published in the Journal of Epidemiology and Community Health. Researchers have previously posited that children with a high IQ can grow up to be heavier drinkers. Now drugs, too? A concise guide to the findings:

What was the study's methodology?

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