Measures of General Intelligence and Risk for Alcohol Use Disorder
JAMA Psychiatry
This male Swedish cohort study that included 573,855 participants assessed if there is an association between IQ and risk for alcohol use disorder, and if so, what is the nature of this association. It found that IQ at age 18 years was associated with subsequent alcohol use disorder risk. Mendelian randomization analyses suggest a causal association, albeit with context-dependent differences; genetic liability for cognitive performance also predicted alcohol use disorder in a US-based sample. Results suggest that there was a clear impact of genetic liability for cognitive performance on alcohol disorder risk, but the association varies based on the sociocultural context.
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