I once read that women are better at reading people's faces than men. If I remember correctly, it comes from a scientific study. Even so, some women are not at all good at it and some men probably are.
You didn't say exactly what you are reading. Do you have to be face-to-face with the person or can you do this over the phone too? Can you do this with emails? Posts? Does it have to be a person that you already know, like a friend or relative?
In order to see if your "reading" is correct, you would have to check it out with the other person. Right? How does that go? Wouldn't you risk upsetting a friendship if you happen to be wrong?
P.S. Look at the date when I joined the "Health Boards". I don't remember how long ago it was, but it's been a while. And guess what? I'm so happy that I just discovered this "off topic" board today. This board has great potential!!