Yes, I read two books practically back-to-back that both had the title The Science of Happiness. This one is actually much more concerned with happiness -- as opposed to depression -- than Stephen Braun's book.

This was not a bad book, and Klein does a very nice job toward the end of describing cognitive behavioral therapy techniques and how they can be applied to oneself to help maintain a positive outlook. I felt, however, that his descriptions of neurological processes were sometimes so simplified as to be inaccurate. Or perhaps it's just that no one really knows exactly how it all works, and that's why they seemed vague and overly simplified.