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PunditFact checks claim about marijuana lowering I.Q.

PunditFact decided to check 'Washington Post' columnist Ruth Marcus' claim about marijuana use and intelligence tests.

http://www.wtsp.com/video/3701862608001/53147622001/PunditFact-checks-claim-about-marijuana-lowering-IQ http://bcdownload.gannett.edgesuite.net/wtsp/35087134001/201407/2700/35087134001_3701846937001_Ruth-Marcus.jpg?pubId=35087134001 PunditFact checks claim about marijuana lowering I.Q. PunditFact decided to check 'Washington Post' columnist Ruth Marcus' claim about marijuana use and intelligence tests. ruth marcusmedical marijuanawtsppunditfactNewsI.Q.marijuanaNew York Times 01:53

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