Kirk Murphy: I'm a brain doc (Consultation-Liaison psych). For *years* Trump has shown uninterrupted, increasingly severe cognitive symptoms: he's incapable of linear thought *at baseline*. Whatever disrupted Biden's linear thought in the debate is at worst intermittent. Bonus: he's not an overt fascist.

President Biden arrives Friday in Madison, Wis., for what will be a critical few hours as he holds a rally attempting to inject new life into a flagging campaign and sits for an ABC News interview as an effort to demonstrate his verbal and mental ability.

Biden faces critical day to push back against calls to withdrawwww.washingtonpost.com With a rally in Wisconsin and an interview on ABC, Biden hopes to begin turning the tide after days of criticism of his recent debate performance.

I'm a brain doc (Consultation-Liaison psych). For *years* Trump has shown uninterrupted, increasingly severe cognitive symptoms: he's incapable of linear thought *at baseline*. Whatever disrupted Biden's linear thought in the debate is at worst intermittent. Bonus: he's not an overt fascist.

Many are unaware of the basic, fundamental difference between describing observable symptoms (“that person has bluish skin”) vs postulating causal mechanisms (“that person has methemoglobinemia”), e.g. diagnosis. [fwiw “Goldwater Rule” is from pre-DSM III psychoanalytic (not biological) causation].

More on origin of Goldwater Rule from era when psych diagnoses were based on hypothesized "intrapsychic" causation per then dominant psychoanalytic theory. Modern psychiatric diagnosis, broadly speaking, relies upon observable phenomena. www.ncbi.nlm.nih.gov/pmc/articles...

The Goldwater Rule: a bastion of a bygone era?www.ncbi.nlm.nih.gov In tandem with the changing political landscape in recent years, interest in the Goldwater Rule has re-emerged within psychiatric discourse. Initiated in 1973, the Goldwater Rule is an ethical code sp...

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