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Carl L Hart

Carl L Hart, Chairman and Ziff Professor Departments of Psychology and Psychiatry at Columbia University; and author of High Price: A Neuroscientist’s Journey of Self-Discovery That Challenges Everything You Know About Drugs and Society

January 2019

  • Annual 420 Marijuana Rally in Vancouver, Canada - 20 Apr 2013<br>Mandatory Credit: Photo by ZUMA/REX (2303473a) A man smokes from an enormous joint Annual 420 Marijuana Rally in Vancouver, Canada - 20 Apr 2013

    Does marijuana use really cause psychotic disorders?

    Carl L Hart and Charles Ksir
    Alex Berenson says the drug causes ‘sharp increases in murders and aggravated assaults’. As scientists, we find his claims misinformed and reckless
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