Trump gets a lot of things wrong when he talks about cognitive tests. He recently bragged to journalists that he “aced” one, and said the doctors at Walter Reed told him no president had taken a ...

Donald Trump keeps bragging about “acing” a cognitive test, and last night, on Air Force One, insulted a reporter, saying she wouldn’t be able to.

A portion of the Montreal Cognitive Assessment, a 10-minute test designed to detect mild cognitive impairment such as the onset of dementia. (Courtesy of MoCA) Doubts about the mental fitness of ...