I was watching a fairly decent documentary regarding marijuana use and at a certain point a clinical psychologist mentioned that long term patients of his that smoked marijuana from a young age showed very little growth in psychological and emotional maturity. Are there any clinical studies that indicate a connection between marijuana use and unstable psychological growth?
closed as off-topic by rjzii, ChrisW, Rory Alsop, SIMEL, user5582 Oct 6 '13 at 18:48
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