Racism, for instance can now be explained entirely in social psychological terms. Both white and non-white behaviror--actions and interactions--follow the models of Aronson's experiments precisely. Alienation within our society and the attendant lost of a sense of community is another example of one of the secondary effects of social psychological processes made so profoundly clear from this book.
Aronson leaves us with a lot to digest and think about, and this in my view is what books of this sort should do. This is a real tour de force. I highly recommend it.