No Measurable Next-Day Cognitive Effects Following Cannabis Use

Those who consume cannabis the previous evening perform no differently than non-consumers on cognitive measures, according to data published in the journal Drug and Alcohol Dependence Reports. Canadian investigators assessed cognitive performance in a cohort of cannabis consumers and similarly matched abstainers. Consumers smoked cannabis 12 to 15 hours prior to testing. Researchers reported “no significant group differences” on any cognitive measures. They concluded: “Contrary to our hypothesis, we found no cognitive performance differences between…