John Gartner (psychologist)

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John D. Gartner is a psychologist and therapist in the U.S.

He graduated magna cum laude from Princeton University in New Jersey and received his Ph.D. in clinical psychology from the University of Massachusetts Amherst and completed his post-doctoral training at New York Hospital - Cornell Medical School.[1] Gartner is a therapist with a private practice in Baltimore and Manhattan,[2] where he specialized in the treatment of borderline personality disorder, bipolar disorder and depression.

Fitness for Office of President Trump[edit]

In the first months of 2017 Gartner collected the signatures of more than 25,000 mental health professionals. The petition was sent to the Minority leader Senator Chuck Schumer of New York.[3] At the end of April 2017 he was able to send the petition (now with more than 41,000 signatures) to Washington D.C..[4]

At the core of the petition: My professional judgement is that Donald Trump manifests a serious mental illness that renders him psychologically incapable of competently discharging the duties of President of the United States. And I respectfully request him be removed from office, according to article 3 of the 25th Amendment, and so on.

According to Gartner, President Trump's mental handicaps are a mix of 1.narcissism, 2. paranoia; 3.sociopathy; and 4. a dash of sadism.

Duty to warn[edit]

John Gartner is the president of Duty To Warn, an organisation of professionals from several branches where professionals have duty to warn patients, clients and the community if they are aware of a potential danger.


He is author of books including:

  • The Hypomanic Edge (2005), in which he argues that many American leaders could be diagnosed as "hypomanic".[5][6]
  • In Search of Bill Clinton (2008) which claimed Bill Clinton showed manic tendencies.[7]


  1. ^ "John D Gartner Bio". Retrieved 10 January 2018.
  2. ^ "Shrinks Battle Over Diagnosing Donald Trump". Psychology Today. Retrieved 10 January 2018.
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  4. ^
  5. ^ "The Hypomanic Edge". Publishers Weekly. 2005. Retrieved 10 January 2018.
  6. ^ "Blessed Are the Hypomanic". Forbes. Jun 2, 2006.
  7. ^ Yardley, Jonathan (October 26, 2008). "Jonathan Yardley on 'In Search of Bill Clinton'". Washington Post.