https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3037578/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3037578/ > Cannabis appears to continue to exert impairing e

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3037578/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3037578/ > Cannabis appears to continue to exert impairing effects in executive functions even after 3 weeks of abstinence and beyond. While basic attentional and working memory abilities are largely restored, the most enduring and detectable deficits are seen in decision-making, concept formation and planning.