Gregory S. Berns, Samuel M. McClure, Giuseppe Pagnoni, and P. Read Montague, «Predictability Modulates Human Brain Response to Reward», Journal of Neuroscience 21, no. 8 (апрель 2001): 2793–98. См. также: Gregory S. Berns, Satisfaction: The Science of Finding True Fulfillment (New York: Henry Holt & Co., 2005).