Index/People/John Gartner

John Gartner

Australian publisher (1914-1998)

Fact-Checks

24 results
Dec 21, 2025
Most Viewed

Does Donald Trump have FTD?

There is no public, clinically confirmed diagnosis that Donald Trump has frontotemporal dementia (FTD); clinicians and commentators have raised repeated concerns based on public behavior and video, bu...

Dec 7, 2025
Most Viewed

Have medical professionals publicly diagnosed Donald Trump with dementia?

Multiple mental-health professionals and psychologists have publicly said they believe Donald Trump shows signs consistent with dementia or cognitive decline — including claims of “incipient dementia”...

Nov 24, 2025
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How mentally sick is Trump

Public reporting shows a mix of professional opinion, anecdote, and political commentary about former President Donald Trump’s mental health: several psychologists and opinion writers say they see cog...

Nov 6, 2025

Have psychiatrists publicly said Donald J. Trump is a psychopath and when?

Psychiatrists and other mental-health professionals have publicly expressed serious concerns about Donald J. Trump’s mental state, but the record shows a mix of careful caution and more direct claims:...

Dec 11, 2025

Are there credible reports or doctor statements about cognitive decline in Trump?

Multiple reporters, opinion writers and mental‑health professionals have publicly said they see signs of cognitive decline in President Donald Trump; several experts have used terms ranging from “wors...

Dec 13, 2025

Which psychologists and psychiatrists publicly signed letters declaring Trump unfit for office and what were their main arguments?

More than 200 mental-health professionals publicly signed open letters and petitions across multiple years asserting that Donald Trump was “unfit” for office; one prominent 2024 action gathered about ...

Nov 17, 2025

What do psychologists say about Donald Trump's intelligence?

Psychologists and mental‑health professionals are divided over what Donald Trump’s behavior reveals about his intelligence: some, like Howard Gardner, emphasize forms of “media” and linguistic intelli...

Nov 26, 2025

Which psychiatrists or psychologists have publicly analyzed Trump's behavior and what conclusions did they reach?

Multiple psychiatrists and psychologists have publicly commented on Donald Trump’s behavior; prominent interventions include the 2017 volume The Dangerous Case of Donald Trump (27 contributors) and su...

Oct 2, 2025

Are there any documented instances of Donald Trump's behavior that raise concerns about his cognitive health?

Multiple commentators and mental-health professionals have publicly raised , citing specific episodes they interpret as potential cognitive decline; these claims are documented across articles, interv...

Nov 21, 2025

Which psychiatrists or psychologists have publicly commented on Donald Trump's mental fitness and what did they say?

Multiple psychiatrists and psychologists have publicly commented on Donald Trump’s mental fitness over the past decade, with a prominent group warning of dangerous traits (e.g., “malignant narcissism”...

Oct 16, 2025

Has any US President been diagnosed with a cognitive disorder while in office?

No source in the supplied material documents a sitting U.S. president being formally diagnosed with a cognitive disorder while in office; the available reporting instead focuses on contemporary concer...

Nov 22, 2025

What medical experts have weighed in on whether Donald J. Trump shows signs of dementia as of 2024?

Medical and mental‑health professionals are divided about whether public behavior by Donald J. Trump shows signs "strongly suggesting" dementia: organized petitions and multiple clinicians (including ...

Nov 11, 2025

What did neurologists and psychiatrists say about Donald Trump's cognition in 2023 and 2024?

A substantial number of psychiatrists, neurologists, and other mental‑health professionals publicly warned in 2023–2024 that Donald Trump’s public behavior was consistent with possible cognitive decli...

Oct 29, 2025

Did Trump's behavior during his presidency raise concerns about his cognitive health?

Multiple experts and commentators raised repeated concerns that Donald Trump’s public behavior during and after his presidency showed patterns that some clinicians and linguists interpreted as possibl...

Jan 21, 2026

What evidence have 'duty to warn' psychiatrists presented publicly about Trump's behavior since 2017?

A loose coalition of psychiatrists and psychologists—often calling themselves “duty to warn” or led by figures like Bandy Lee and John Gartner—have publicly pointed to patterns in Donald Trump’s publi...

Jan 21, 2026

Trump suffers from dementia

Public debate has sharply divided over whether Donald Trump “suffers from dementia”: multiple clinicians and commentators point to behaviours they say are consistent with dementia—disinhibition, word-...

Jan 20, 2026

Which specific psychiatrists signed the 2017 and 2024 open letters about Trump, and what are their credentials?

Two distinct waves of public warnings by mental-health professionals about Donald Trump—first in 2017 and again in 2024—are documented in the sources, but the reportage does not provide a complete ros...

Jan 20, 2026

What specific public incidents have been cited as evidence of Donald Trump’s cognitive decline?

Public incidents repeatedly cited as evidence of Donald Trump’s cognitive decline include verbal gaffes and word substitutions, prolonged rambling or tangential monologues, striking attention-grabbing...

Dec 17, 2025

Have any licensed psychiatrists publicly diagnosed Donald Trump with dementia?

No source in the provided set shows a licensed psychiatrist publicly diagnosing Donald Trump with dementia; the materials cite psychologists and at least one psychiatrist who has suggested or claimed ...

Dec 13, 2025

What specific speeches or interviews have experts cited as evidence of cognitive decline in Donald Trump since 2020?

Experts and journalists have repeatedly pointed to specific Trump speeches, rallies and interviews since 2020 as evidence of declining verbal complexity, tangentiality and memory lapses — most promine...