NEW YORK -- A new analysis is challenging a report that suggests regular marijuana smoking during the teen years can lead to a long-term drop in IQ. The analysis says the statistical analysis behind that conclusion is flawed.
http://www.huffingtonpost.com/2013/01/14/marijuana-study-teens-pot-iq-drop-flawed_n_2473936.html?utm_hp_ref=tw, 14.1.2013
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