As part of the Philadelphia Neurodevelopmental Cohort, high-resolution T1-weighted MRIs were obtained from 781 youth aged 14–22 years. This sample included 147 cannabis (marijuana) users (109 used 1–2 times per week and 38 used 3 or more times per week) and 634 cannabis non-users. Several structural neuroimaging measures were examined, established procedures for stringent quality […]
