Tournaments are often used to improve performance in innovation contexts. Tournaments provide monetary incentives but … non-routine task and identify the importance of these behavioral aspects. In a natural field experiment (n>1 …,700 participants), we vary the salience of team identity, social-image concerns, and whether teams face monetary incentives. Increased …

experiment across Germany, randomly assigning almost 8,000 postal codes to Save the Children fundraising videos or to a pure …Does online fundraising increase charitable giving? Using the Facebook advertising tool, we implemented a natural field … substitution and measurement issues. We found that (i) video fundraising increased donation revenue and frequency to Save the …

their effect across charity space and time. We find that major fundraising appeals lift total donations, but surprisingly …Fundraising interventions may lift donations and/or shift their composition and timing, making it important to study …

, we show that these nominally unrelated tax incentives interact: wealth taxation increases the after-tax own …

legally a tax. We design a randomized field experiment with treatments informing individuals that the levy is a tax. We …

This paper presents evidence from a field experiment, which aims to identify the two sources of worker's pro …-social motivation that have been considered in the literature: action-oriented altruism and output-oriented altruism. To this end we …-oriented altruism. We then compare the latter to effort exerted in an environment where both types of altruistic preferences are …

Ineffective fundraising lowers the resources charities can use for goods provision. We combine a field experiment and a … causal machine-learning approach to increase a charity's fundraising effectiveness. The approach optimally targets … fundraising to individuals whose expected donations exceed solicitation costs. Among past donors, optimal targeting substantially …

In this paper we present results from a large scale real effort experiment in an online labor market investigating the …