Colin M. Campbell

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In existing models of first-price common-value auctions, heterogeneous bidder information characterized by a well-informed ``insider'' is detrimental to the seller's revenue. We show that this is not a general principle. The linkage effect of increased information identified by Milgrom and Weber has force in our model of heterogeneous bidders, and dominates(More)
Standard auctions are known to be a revenue-maximizing way to sell an object under broad conditions when buyers are symmetric and have independent private valuations. We show that when buyers have interdependent valuations, auctions may lose their advantage, even if symmetry and independence of information are maintained. In particular, simple alternative(More)
Prior to this paper all small simple groups were known to be efficient but the status of four of their covering groups was unknown. We produce nice efficient presentations for all of these groups, resolving the previously unknown cases. We give presentations that are better than available before in terms of length and in terms of computational properties.(More)
The Off-Site Radiation Exposure Review Project (ORERP) was established by the U.S. Department of Energy to (1) collect, preserve, and disseminate historical data related to radioactive fallout and health effects from nuclear testing, and (2) reconstrut, insofar as possible, the exposures to the off-site public from nuclear testing at the Nevada Test Site(More)
Corporate governance research indicates that corporate boards of directors may be overly beholden to management, which can be detrimental to firm value creation. Drawing upon agency theory and the governance law literature, we examine the effects of a new SEC rule designed to lessen managerial power by increasing large, long-term shareholders’ influence in(More)
We characterize a precise comparative static on welfare and the amount of public information in an economy under uncertainty. Results dating to Hirshleifer (1971) have suggested that information can have negative value in such a setting, but counterexamples using competitive equilibrium outcomes have suppressed general results to this effect. We show that(More)
The role of electronic networks in B2B relationships has been growing exponentially. From massive internet B2B exchanges to tiny RFID chips, B2B is increasingly becoming e-B2B. Whilst e-B2B has been explored intra-nationally, its international counterpart is less well documented; as has been the role that culture might play in the development of(More)