The relationship between non‐acute adolescent cannabis use and cognition
Drug and Alcohol Review May 1, 2007 Megan A. Harvey, John D. Sellman, Richard J. Porter et al.
Regular cannabis use among adolescents is associated with poorer performance on cognitive tasks measuring attention, spatial working memory, and learning, even after 12 hours of abstinence. In a sample of 70 adolescents recruited from clinical and community sources, those using cannabis more than once a week scored significantly lower on four cognitive measures. Cannabis use remained an independent predictor of working memory and strategy performance after accounting for psychiatric functioning, general functioning, demographics, and other drug use. The findings suggest that frequency of cannabis use is independently related to certain cognitive functions in adolescents, beyond acute intoxication.