Big Gods: How Religion Transformed Cooperation and Conflict. By AraNorenzayan. Pp. xiii, 248. Princeton, Princeton University Press, 2013, £19.95.God Is Watching You: How the Fear of God Makes Us Human. By DominicJohnson. Pp. x, 286. New York, Oxford University Press, 2016, £15.90. (26th December 2018) - Murphy, Benjamin