We test whether an environment of poverty affects time preferences through purely psychological channels. We measured discount rates among farmers in Uganda who made decisions about when to enjoy entertainment instead of working. To circumvent the role of economic constraints, we experimentally...

This paper provides experimental evidence showing that members of a majority group systematically shift punishment on innocent members of an ethnic minority. We develop a new incentivized task, the Punishing the Scapegoat Game, to measure how injustice affecting a member of one's own group...

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...

The aim of this paper is to investigate the occurrence of discrimination based on ethnicity in public officials' treatment of welfare clients. Previous research has confirmed the existence of ethnic discrimination, but we argue that further investigations are needed. Field experiments in the...

Adverse consequences of climate change often affect people and places far away from those that have the greatest capacity for mitigation. Several correlational and some experimental studies suggest that the willingness to take mitigation actions may diminish with increasing distance. However,...

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...

The underrepresentation of women and homosexuals in leadership positions has been well documented, but the grounds for this need further investigation. We conduct a field and an online experiment to test a prominent theory about the sources of the sexual and gender gap in political leadership...

We study whether a particular socio-emotional skill – grit (the ability to sustain effort and interest towards long-term goals) – can be cultivated through a large-scale program, and how this affects student learning. Using a randomized control trial, we evaluate the first nationwide...

We examine individual-level determinants of interest in STEM and analyze whether a digital web application for elementary-school children can increase children's interest in STEM with a specific focus on narrowing the gender gap. Coupling a randomized-controlled trial with experimental lab and...

Based on data for more than 2,400 citizens in Japan, this paper empirically examines the effect of climate-related identity in private and organizational contexts on revealed climate protec-tion activities, measured through incentivized donations. To identify causal effects, we include the...