You can tell if it's yes or no depending on speed but thanks to covid WFH for months I've forgotten which is which. Going back to the office is going to be an adjustment.
https://en.wikipedia.org/wiki/Altaic_languages#Korean_and_Ja...
(I would make the "come here" gesture with my hand starting closer to the person and moving towards me, and the "go away" gesture in reverse, although it might be difficult to tell because the motion would be repeated and confounded with moving my hand/arm into place in either case.)
2. Gesturing is linked to speech/language. Different languages will have different gestures, not because they learned them, but by the grammatical structure/intonation of the language.
It will have been interesting to see multi-lingual people, and see if the level of gesturing changes when they switch language.
"The results showed that blind Turkish speakers gesture like their sighted counterparts, and the same for English speakers. All Turkish speakers gestured significantly differently from all English speakers, regardless of sightedness. This means that these particular gestural patterns are something that’s deeply linked to the grammatical properties of a language, and not something that we learn from looking at other speakers."
It's likely the gestures have as heavy an accent as the speech in: https://www.youtube.com/watch?v=FSTAAs1Y-38
(:futurama fry:) Not sure if codified gesture, or ancient meme format.
http://changingminds.org/explanations/behaviors/body_languag...
I tend to use metaphoric gestures a lot by splitting complicated subjects up into groups, and then using gestures to illustrate the group I am discussing at the moment.
A related article is https://www.thecut.com/2016/09/blind-people-gesture-like-sig...
I'd expect similarities!