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Department of Economics, Lund University Working Papers, Department of Economics, Lund University

No 2007:4:
More Communication, Less Cooperation: Experimental Evidence from Multi-stage Games

Ola Andersson () and Erik Wengström ()

Abstract: It is well known that communication often serves as a facilitator for cooperation in static games. Yet, communication can serve entirely different purposes in dynamic settings as communication during the game may work as a means for renegotiation, potentially undermining the credibility of cooperative strategies. To explore this issue, this paper experimentally investigates cooperation and non-binding communication in a two-stage game. More specifically, two treatments are considered: one with only pre-play communication and one where subjects can also communicate intra-play between the stages of the game. The results highlight a nontrivial difference concerning the effects of pre-play communication between the two treatments. Pre-play communication only has a significant impact on cooperation when no intraplay communication is possible. The results suggest that the credibility of pre-play messages may depend crucially on future communication opportunities.

Keywords: Renegotiation; Communication; Cooperation; Experiments; (follow links to similar papers)

JEL-Codes: C72; C92; (follow links to similar papers)

29 pages, February 21, 2007, Revised November 24, 2010

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