Tell Your Children: The Truth About Marijuana, Mental Illness and Violence  Tell Your Children: The Truth About Marijuana, Mental Illness and Violence is a 2019 book by Alex Berenson, denounced as alarmist and inaccurate by many in the scientific and medical communities because of his claims that cannabis use "causes" psychosis and violence. Those scientists state that he is drawing inappropriate conclusions from the research, primarily by inferring causation from correlation, as well as cherry picking data that fits his narrative, and falling victim to selection bias via his use of anecdotes to back up his assertions. The title "Tell Your Children" was also the original title for "Reefer Madness", a 1936 American propaganda film which gained cult popularity in the 1970s for its alarmist claims about marijuana. In an interview, Berenson said he made this choice deliberately: "I expected I would face serious backlash for this book and instead of running from it I decided to lean in." In January 2019, Berenson published the book and an accompanying op-ed in both "The Wall Street Journal" and "The New York Times," in which he claims that use of marijuana causes psychosis and violence. Berenson's portrayal of scientific and medical evidence has been widely panned as inaccurate and alarmist by scientists and medical experts, who have described his arguments as "based on a deeply inaccurate misreading of science" and an attempt to stir up public fear. A group of 100 scholars and clinicians (including academics from Columbia University, Harvard Medical School, and New York University, and care providers including addiction medicine doctors, psychologists, psychiatrists and social workers) published an open letter criticizing Berenson's claim of a scientific link between cannabis use and violence. In particular, they describe his book as highly problematic because Berenson infers causation from correlation, cherry-picks data that fits his narrative, falls victim to selection bias via use of anecdotes to back up his assertions, and attributes the disproportionate rates of arrest of African-American youth  to the alleged violence caused by their cannabis use, despite individuals of all races using cannabis at approximately equal rates. Berenson responded to questions about the letter, arguing that its signatories were not experts and that there was an insufficient number of medical doctors that had signed on to validate any criticisms of his book laid out in the letter. Ziva Cooper, a cannabis researcher at UCLA who was involved in conducting a study heavily referenced by Berenson, disputed Berenson's determination that the study "declared the issue [that cannabis causes violence and psychosis] settled" by tweeting that the study only found a correlation, and not a causation, as Berenson had claimed in his publications, between cannabis use and schizophrenia.