One lingering puzzle is why voluntary contribu tions to public goods decline over time in experimental and real-w orld settings. We show that the decl ine of cooperation is driven by individual preferences for im perfect conditional cooperation. Many people’s desire to contribute less than oth ers, rather than changing beliefs of what others will contr ibute over time or people’s heterogeneity in preferences makes voluntary cooperation fragile. Universal free riding thus even tually emerges, despite the fact tha t m ost peop le a re not selfis h. (JEL C91, C72, H41, D64)

/pdf/social-preferences-beliefs-and-the-dynamics-of-free-riding-5djmyntr9e.pdf

Social Preferences, Beliefs, and the Dynamics of Free Riding in Public Goods Experiments

Understanding the proximate and ultimate sources of human cooperation is a fundamental issue in all behavioural sciences. In this paper, we review the experimental evidence on how people solve cooperation problems. Existing studies show without doubt that direct and indirect reciprocity are important determinants of successful cooperation. We also discuss the insights from a large literature on the role of peer punishment in sustaining cooperation. The experiments demonstrate that many people are ‘strong reciprocators’ who are willing to cooperate and punish others even if there are no gains from future cooperation or any other reputational gains. We document this in new one-shot experiments, which we conducted in four cities in Russia and Switzerland. Our cross-cultural approach allows us furthermore to investigate how the cultural background influences strong reciprocity. Our results show that culture has a strong influence on positive and in especially strong negative reciprocity. In particular, we find large cross-cultural differences in ‘antisocial punishment’ of pro-social cooperators. Further cross-cultural research and experiments involving different socio-demographic groups document that the antisocial punishment is much more widespread than previously assumed. Understanding antisocial punishment is an important task for future research because antisocial punishment is a strong inhibitor of cooperation.

/pdf/reciprocity-culture-and-human-cooperation-previous-insights-ig8thelwjs.pdf

Reciprocity, culture and human cooperation: previous insights and a new cross-cultural experiment.

Belief elicitation is an important methodological issue for experimental economists. There are two generic questions: 1) Do incentives increase belief accuracy? 2) Are there interaction effects of beliefs and decisions? We investigate these questions in the case of finitely repeated public goods experiments. We find that belief accuracy is significantly higher when beliefs are incentivized. The relationship between contributions and beliefs is slightly steeper under incentives. However, we find that incentivized beliefs tend to lead to higher contribution levels than either non-incentivized beliefs or no beliefs at all. We discuss the implications of our results for the design of public good experiments.

/pdf/the-effects-of-incentivized-belief-elicitation-in-public-5803c0ilvo.pdf

The effects of (incentivized) belief elicitation in public goods experiments

Does the cultural background influence the success with which genetically unrelated individuals cooperate in social dilemma situations? In this paper, we provide an answer by analysing the data of Herrmann et al. (2008a), who studied cooperation and punishment in 16 subject pools from six different world cultures (as classified by Inglehart & Baker (2000)). We use analysis of variance to disentangle the importance of cultural background relative to individual heterogeneity and group-level differences in cooperation. We find that culture has a substantial influence on the extent of cooperation, in addition to individual heterogeneity and group-level differences identified by previous research. The significance of this result is that cultural background has a substantial influence on cooperation in otherwise identical environments. This is particularly true in the presence of punishment opportunities.

/pdf/culture-and-cooperation-29s5kf1t3x.pdf

Culture and cooperation

https://www.nottingham.ac.uk/cedex/documents/papers/2009-25.pdf

The behavioral validity of the strategy method in public good experiments

Selfish-biased conditional cooperation : On the decline of contributions in repeated public goods experiments

In the recent literature, several hypotheses have been put forward in order to explain the decline of contributions in repeated public good games. We present results of an experiment which allows to evaluate these hypotheses. The main characteristics of our experimental design are a variation of information feedback and an elicitation of individual beliefs about others' contributions. Altogether, our data support the hypothesis of conditional cooperation with a selfish bias.

Malte Loos

Papers

Selfish-biased conditional cooperation : On the decline of contributions in repeated public goods experiments

Selfish-biased conditional cooperation: On the decline of contributions in repeated public goods experiments

Modelling LMNA-cardiomyopathy with patient-specific human iPSC-derived engineered heart tissue and a partial rescue by gene replacement therapy