Sotiris Georganas

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Any opinions expressed here are those of the author(s) and not those of IZA. Research published in this series may include views on policy, but the institute itself takes no institutional policy positions. The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between science,(More)
I design and test a simple English auction and two English auctions with resale, but with di¤erent informational backgrounds. All three treatments theoretically have the same equilibrium. I …nd, however, that the possibility of resale alters behavior signi…cantly. In the two treatments with resale, subjects deviated from both the Nash prediction and the(More)
Levels-of-reasoning models have been used to interpret behavior in laboratory games. We test whether these models generate reliable cross-game testable predictions. Within one family of similar games subjects' observed levels are fairly consistent, but within another family of games there is virtually no cross-game correlation. Moreover , the relative(More)
We present results from an experiment based on Hafalir and Krishna's (2008) model of auctions with resale. As predicted weak bidders bid more with resale than without, so that resale raises average auction prices. When the equilibrium calls for weak types to bid higher than their values with resale they do, but not nearly as much as the theory predicts.(More)
We study the extent to which communication can serve as a collusion device in one-shot first-and second-price sealed-bid auctions. Theoretically, second-price auctions are more fragile to collusion through communication than first-price auctions. In an array of laboratory experiments we vary the amount of interactions (communication and/or transfers without(More)
Bidding one's value in a second-price auction with private valuations is a dominant solution (Vickrey, 1961). However, repeated experimental studies …nd much more overbidding than underbidding, resulting in overbidding on average. In our experimental work we introduce manipulations against which the dominant strategy is immune, yet they a¤ect bidding in a(More)
Any opinions expressed here are those of the author(s) and not those of IZA. Research published in this series may include views on policy, but the institute itself takes no institutional policy positions. The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between science,(More)
We make four contributions to the literature on voter coordination and identities: First, we …nd that natural identities have a stronger negative in ‡uence on coordination than payo¤ relevant minimal identities. Second, communication and repeated interaction can signi…cantly increase coordination in both cases. Third, we show that multiple natural(More)