On Behaviour, by Keith Trimm is a firm choice of relationship books and society books available on obooko. Here is an excerpt: 'Culture and the need to fit in can and will change a person's behavior in a group. People do things in groups they would never do in private. This isn't ground breaking new science, but it helps explain some behavior. It seems if everyone else is doing it, then it must be ok, especially in tense situations although they were taught it was wrong. When is it ok to loot from a store? I would think never, but if you live in a big city and the power goes out, there will be a group of people who think the behavior is perfectly fine. But how can that be? We were all taught as kids that stealing is wrong, and there is at least one commandment against stealing ...'