Understanding the roots of human cooperation among strangers is of great importance for solving pressing social dilemmas and maintening public goods in human societies. We study the development of cooperation in 929 young children, aged 3 to 6. In a unified experimental framework, we examine...

Nachdem Teilnehmer eines Online-Experiments an die soziale Isolierung des Lockdowns erinnert wurden, verhielten sich diese egoistischer als eine neutrale Vergleichsgruppe. Allerdings beurteilten Teilnehmer eines weiteren Experiments, die ebenfalls an die soziale Isolation im Lockdown erinnert...

The Description-Experience gap (DE gap) is widely thought of as a tendency for people to act as if overweighting rare events when information about those events is derived from descriptions but as if underweighting rare events when they experience them through a sampling process. While there is...

We summarize the experimentally measured characteristics of the regis- tered participants of the experiments conducted at the Institute of Social and Economic Research, Osaka University. Measured characteristics include uid intelligence, risk preference (risk aversion, prudence, and temperance),...

Social norms pervade human interaction, but their demands are often in conflict. To understand behavior, it is thus crucial to know how individuals resolve normative tradeoffs. This paper proposes that sincere judgments about the relative importance of conflicting norms are shaped by personal...

An explanation of the Dunning-Kruger effect is provided which does not require any psychological explanation, because it is derived as a statistical artefact. This is achieved by specifying a simple statistical model which explicitly takes the (random) boundary constraints into account. This...

We study the development of cooperation in 929 young children, aged 3 to 6. In a unified experimental framework, we examine pre-registered hypotheses about which of three fundamental pillars of human cooperation – direct and indirect reciprocity, and third-party punishment – emerges earliest...

We explore aversion to the use of algorithms in moral decision-making. So far, this aversion has been explained mainly by the fear of opaque decisions that are potentially biased. Using incentivized experiments, we study which role the desire for human discretion in moral decision-making plays....

We aim to understand the role and evolution of beliefs in the indefinitely repeated prisoner's dilemma (IRPD). To do so, we elicit beliefs about the supergame strategies chosen by others. We find that heterogeneity in beliefs and changes in beliefs with experience are central to understanding...

We extend the literature structurally estimating social preferences by accounting for the desire to adhere to social norms. Our representative agent is strongly motivated by norms and failing to account for this causes us to overestimate how much agents care about helping those who are worse...