Consider that only 7% of interpersonal relationships are based on the use of words, while the remaining part is communicated through body language.

I’m not surprised at all. My wife just looks at me and she immediately knows I’m not telling something. I don’t have to lie for her to be able to read my body language lol.

...daughter stares at her mother because she wants to make sure she believes her lies.

That’s kind of interesting. However, I don’t want to become a person who studies all the time people’s expression. I would become obsessed and at some point it would become obnoxious. I think all of us are subconsciously studying other people’s expressions, it's just that we don’t think about that the way E. A. Haggard, or K. S. Isaacs did. It has become part of our lifes.

Not all, however, react the same way during an interrogation, in fact there are those who speak very quickly...

That’s true, especially when you don’t know that person, than you can as well come to quickly to misleading conclusion. Anyway, great topic @cryptoitaly!