One of the things you have to remember when working with human beings is that IQ is not the same as EQ, and they’re rarely equal. Some people have a horrible temper. One guy I know is smart, but he remains the biggest jerk I’ve ever met.
I remember hearing one time that when people are hurt in their childhood or teen years they stop developing emotionally at that point. So if they are somehow hurt when they are twelve years old, they can be thirty years old physically but only twelve emotionally. I don’t know if that’s 100% true, but it seems like it in some cases I know. (And the hard thing is that these people don’t know that they have these problems.)