Well, I see FOX is discussing something a friend who is also a mental health care professional has mentioned.”
Briefly quoting the FOX news item linked above:
The use of the past tense can be an indicator of psychological detachment, and the researchers found that the psychopaths used it more than the present tense when compared with the nonpsychopaths. They also found more dysfluencies — the “uhs” and “ums” that interrupt speech — among psychopaths. Nearly universal in speech, dysfluencies indicate that the speaker needs some time to think about what they are saying.
With regard to psychopaths, “We think the ‘uhs’ and ‘ums’ are about putting the mask of sanity on,” Hancock told LiveScience.
We have a couple of public figures who use the past tense a lot, and have a great many “disfluencies.” Like this one:
Is the real truth out?