dilemmas and maintening public goods in human societies. We study the development of cooperation in 929 young children, aged 3 … of defectors is applied. Children also engage in reciprocating others, showing that reciprocity strategies are already … young children fail to anticipate the benefits of reputation building. We also show that the cognitive skills of children …

We present a field experiment to study the effects of non-monetary incentives on healthy food choices of 282 children … be feasible. We introduce a system where food items are graded based on their nutritional value, involving parents or … classmates as change agents by providing them with information regarding the food choices of their children or friends. We find …