Omeo

Does anyone know if there's a book or something that explains why some people are rude or arrogant or insulting or condescending or anything like that? It's not that I actually know anyone like that right now, I just thought it would be good to know why some people are mean when I meet them. I assume it has something to do with how they were treated as children; not that that excuses their behavior. Anyone know of anything like that? Thanks in advance.