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...

Payments and discounts incentivize participation in many transactions about which people know little, but can learn more --- payments for medical trial participation, signing bonuses for job applicants, or price rebates on consumer durables. Who opts into the transaction when given such...

About 15 years ago, economic experiments with children and adolescents were considered as an extravagant niche of economic research. Since then, this type of research has exploded in scope and depth. It has become clear that studying the development of economic behavior and its determinants is...

We test whether markets are needed to mitigate the effects of anchoring on peoples' pref- erences. We anchor subjects by asking them if they are willing to sell a bottle of wine for a transparently uninformative random price. We elicit subjects' Willingness-To-Accept for the bottle before and...