This is a subject that is pretty close to my heart, and which I think extends beyond demeanor. I witness on a near-daily basis conversations turning into heated

This is a subject that is pretty close to my heart, and which I think extends beyond demeanor. I witness on a near-daily basis conversations turning into heated arguments simply because the protagonists fail to see beyond their own perspectives and convey their own inadequately. Quite often, it seems, the points brought forward by the "opposing" party are largely ignored, the arguments are no longer about who/what is right, but about who wins. You therefore end up with conversations where the two parties are in fact talking about the same thing, but are so caught up in their own narrative that instict (System 1) takes over. Alternatively, people may be talking about completely different things and fail to realize they're doing so, effectively and unknowningly arguing in a vacuum, where loudness and displays of anger are more often than not the deciding factors. In both instances, this often results in disgruntled people and feelings being blown out of proportion. One only needs to look at political debates to see what I'm referring to. On a lighter note, and hopefully providing more positive (anecdotal) examples than the article provides, signalling can be a very powerful tool too, even when mixed. It seems I have one of those faces that instills trust; quite regularly, completely random people will smile at me, say hello or even engage in conversation. Similarly, I'll be, say, on a bus and transport inspectors will get on and check everybody's tickets, except mine. They will look at me, smile at me, and completely ignore whether I do have a ticket. This sort of thing happens to me so regularly that I'm not even sure what to make of it, though it is definitely nice.