The US national park system includes 423 sites covering more than 85 million acres of land
and some of the most iconic landscapes in the country. The parks host approximately 320 …

Many IT professionals seek to improve their job prospects by engaging as leaders of online
communities, for example, by serving as a moderator or admin. We investigate whether such …

The altruistic crowding‐out effect is a decrease of prosocial behavior due to monetary
incentives or material rewards that intend to increase an extrinsic motivation for the …

Altruism is a well-studied phenomenon in the social sciences, but online altruism has
received relatively little attention. In this article, we examine several cases of online altruism …

This study outlines a unifying model of “green consumption technologies,” which mediate
the household production of utility-conferring characteristics and externalities from available …

This paper examines the effect of big gifts on rival charities. Using novel information on big
gifts, I find evidence of positive spillovers on donations and charitable activities for charities …

This paper studies the economic effects of the US National Park System, the largest national
conservation entity in the world. We assemble a new dataset on the history of the system …

We investigate the effects of air pollution on promoting donations for its victims-respiratory
disease patients-using a unique visit and donation data from a major online medical …

This paper studies the economic effects of the US National Park System, the largest national
conservation entity in the world. We assemble a new dataset on the history of the system …

We study civic crowdfunding campaigns, which leverage online platforms to raise funds for
local public goods. We investigate``crowding-out''along two dimensions. We test whether an …