We find robust gender differences in bidding behavior in sealed bid auctions with independent and private valuations in a laboratory setting. In particular, we find that women bid significantly higher and earn significantly less than men do in the first-price auction, while we find no evidence...

This study presents a laboratory experiment of the first and second price sealed bid auctions with independent private values, where the distribution of bidder valuations is unknown. In our experimental setting, in first price auctions, bids are lower with the presence of ambiguity. This result...