Looking Under the Hood of Third-Party Punishment Reveals Design for Personal Benefit
Psychological Science (2016) - Comment
pubmed: 26851057  doi: 10.1177/0956797615624469  issn: 1467-9280  issn: 0956-7976 

Max M. Krasnow, Andrew W. Delton, Leda Cosmides, John Tooby