Just read Stuart West's review of Robert Trivers' recently published book, Deceit and Self-Deception. Trivers explores his new theory that self-deception is favored on all levels, from genes, to individuals, to groups.  From religion to nationalism, mate selection to war, Trivers finds self-deception in practically everything we do.

A more critical review of Robert Trivers' new book on the evolutionary underpinnings of deception and self-deception:

http://www.guardian.co.uk/books/2011/oct/10/deceit-self-deception-robert-trivers-review

Should be an interesting read even if the theory of kin selection is now being challenged by another expert on evolution (Read the latest Atlantic).