“…Despite statistically significant findings, the magnitude of these effects is relatively modest. Furthermore, although individual manuscripts, narrative reviews, and theoretical evidence have suggested that an earlier age of cannabis use onset may be more deleterious (Crane, Schuster, Mermelstein, & Gonzalez, 2015;Meier et al, 2018;Schneider, 2008;Pope, Gruber, Hudson, Huestis, & Yurgelun-Todd, 2001;Shono, Edwards, Ames, & Stacy, 2018) for neurocognitive outcomes, the results emerging from the meta-analyses do not support this contention. The results from these meta-analyses also support the idea that adverse cannabis-related neurocognitive effects are likely reversible.…”