%0 Report %A Reuben, Ernesto %A Suetens, Sigrid %T Revisiting Strategic versus Non-Strategic Cooperation %D 2009 %8 2009 Apr %I Institute of Labor Economics (IZA) %C Bonn %7 IZA Discussion Paper %N 4107 %U https://www.iza.org/publications/dp4107 %X We use a novel experimental design to disentangle strategically- and non-strategically-motivated cooperation. By using contingent responses in a repeated sequential prisoners' dilemma with a known probabilistic end, we differentiate end-game behavior from continuation behavior within individuals while controlling for expectations. This design allows us to determine the extent to which strategically-cooperating individuals are responsible for the so-called end-game effect. Experiments with two different subject pools indicate that the most common motive for cooperation in repeated games is strategic and that the extent to which end-game effects are driven by strategically-cooperating individuals depends on the profitability of cooperation. %K strong reciprocity %K strategic cooperation %K conditional cooperation %K reputation building