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Published online by Cambridge University Press: 31 January 2012
The claims about (1) the lack of empirical support for a model of strong reciprocation and (2) the irrelevant empirical role of costly punishment to support cooperation in the field need qualifications. The interpretation of field evidence is not straightforward, and other-regarding preferences are also likely to play a role in the field.
Target article
Weak reciprocity alone cannot explain peer punishment
Related commentaries (1)
Reciprocity: Weak or strong? What punishment experiments do (and do not) demonstrate