Is it an affectation that they're trained to deploy? (If so, why?) Or is it just a natural thing that happens in the very specific circumstance of being a politician on the campaign trail, and that's why no one else seems to do it?

I don't think I've seen it in any other context 🤔

Cheers!

A photo of a hand doing a pinchy, half-committed 'thumbs up' gesture common amongst political speakers
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[–] 77 points 1 year ago (2 children)

It's one of many gestures that are used by trained public speakers as non-verbal communication cues. Here are some examples, including the one you asked about: https://qz.com/work/1093701/a-guide-to-ted-talk-hands-seven-signature-moves

There are many more beyond those. Using hand gestures in public speaking has been around since at least classical times.

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  • [–] 11 points 1 year ago (1 child)

    Nobody likes being pointed at. The fist point, then, is a way to underscore an important point without the scolding, accusatory associations of a raised index finger—because it uses a thumb instead. Clinton Thumb works best when paired with an intellectually complex point, making it a TED talk favorite. “It is articulating that you’re focusing on something, and that you’re grasping it cognitively,” body language expert Joe Navarro told Business Insider.

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