I think the first woman is cheerful and calm, because she has two sides of her face similar and she is very talkative because her lips are thicks.
I consider that the black man is also cheerful, calm and talkative because he has thick lips.
Furthermore, the woman who appears on the third photo I think her smile is false because the skin around her eyes don´t tighten and don't create lines. I believe she is a person with short-tempered and selfish, too.
Finilly, the man who appears on the last picture I consider he is in a bad mood because he frowns, perhaps he is worried for something.