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This article reports a meta-analysis of 82 studies assessing the relationship between social value orientation (SVO) and cooperation in social dilemmas. A significant and small to medium effect size was found ( r = .30). Results supported a hypothesis that the effect size was larger when participants were not paid ( r = .39) than when they were paid ( r = .23). The effect size was also larger in give-some ( r = .29) as opposed to take-some ( r = .22) games. However, contrary to expectations, the effect was not larger in one-shot, as opposed to iterated games. Findings are discussed in the context of theory on SVO and directions for future research are outlined.
Balliet et al. (Wed,) studied this question.