Negative campaigning is a recurring feature of political competition, though its persistence is puzzling in light of research showing that the public dislikes it. Why do candidates risk alienating voters by going negative? One answer may lie in the large empirical literature on persuasion...

Political campaigns spend millions of dollars each voting cycle on persuading voters, and it is well established that these campaigns do affect voting decisions. What is less understood is what element of campaigningÑthe content of the message or the delivery method itselfÑ sways voters, a...

Political campaigns spend millions of dollars each voting cycle on persuading voters, and it is well established that these campaigns do affect voting decisions. What is less understood is what element of campaigning — the content of the message or the delivery method itself — sways voters,...

We examine optimal incentives for charitable giving with a large-scale field experiment involving 26 charities and over 112,000 unique individuals. The price of giving is varied by offering a fixed match if the donation meets a threshold amount (e.g. "give at least $25 and the charity receives a...