I looked at the pictures and maybe some of it might be useful sometimes, but we really have to be careful reading body language, it is not an exact science. A person might be expressing a feeling, but people don't express themselves all the same way, either verbally or physically, and it can also mean nothing and they could be in a certain position simply for physical comfort. For example the guy who is holding his neck (or scratching the back of his neck) could be simply scratching his neck because it itches, the other guy could be rubbing his eye just because it itches, the woman with her legs crossed a certain way because she is supposedly shy, I'm very shy and I never cross my legs that way. etc etc.
Anyway, my point is just that we really have to be careful with the body language interpretation, and this is true just as much for NTs trying to interpret body language.
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That's the way things come clear. All of a sudden. And then you realize how obvious they've been all along. ~Madeleine L'Engle