While most models of auctions and competitive bidding assume that each bidder's utility for an outcome depends only on his own profit, we allow the utility to also depend on any regret that a bidder suffers after the fact and characterize when and how this affects bidding. Specifically, a winner...

The theory of auction design examines how various factors affect the outcome of an auction. Most of the existing literature focuses on how varying the amount of information available to each bidder affects the bid-taker's expected revenue when all other factors remain constant. This paper...

We investigate the effect of regret-related feedback information on bidding behavior in sealed-bid first-price auctions. Two types of regret are possible in this auction format. A winner of the auction may regret paying too much relative to the second highest bid, and a loser may regret missing...