The effect of positive mood on cooperation in repeated interaction / Eugenio Proto (University of Warwick, CAGE and IZA), Daniel Sgroi (University of Warwick, CAGE and Nuffield College, University of Oxford), Mahnaz Nazneen (University of Warwick) ; IZA Institute of Labor Economics
VerfasserProto, Eugenio ; Sgroi, Daniel ; Nazneen, Mahnaz
KörperschaftForschungsinstitut zur Zukunft der Arbeit
ErschienenBonn, Germany : IZA Institute of Labor Economics, November 2017
Elektronische Ressource
Umfang1 Online-Ressource (19, A.14 Seiten) : Diagramme
SerieDiscussion paper ; no. 11130
 Das Dokument ist öffentlich zugänglich im Rahmen des deutschen Urheberrechts.
The effect of positive mood on cooperation in repeated interaction [0.87 mb]
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Existing research supports two opposing mechanisms through which positive mood might affect cooperation. Some studies have suggested that positive mood produces more altruistic, open and helpful behavior, fostering cooperation. However, there is contrasting research supporting the idea that positive mood produces more assertiveness and inwardorientation and reduced use of information, hampering cooperation. We find evidence that suggests the second hypothesis dominates when playing the repeated Prisoner's Dilemma. Players in an induced positive mood tend to cooperate less than players in a neutral mood setting. This holds regardless of uncertainty surrounding the number of repetitions or whether pre-play communication has taken place. This finding is consistent with a text analysis of the pre-play communication between players indicating that subjects in a more positive mood use more inward-oriented, more negative and less positive language. To the best of our knowledge we are the first to use text analysis in pre-play communication.