Search Results
Working Paper
Aggression of the Weak
This paper compares equilibrium bidding strategies in a first-price sealed-bid auction with two asymmetric bidders who have dependent private valuations. Modeling bidder strength via a stochastic asymmetry condition – where one bidder is systematically more likely to hold the maximum valuation – I show that the globally weak bidder, facing a competitive disadvantage at all top valuation levels, bids more aggressively at every valuation. Conversely, the stronger bidder wins more frequently, generalizing Maskin and Riley (2000) to dependent private-value environments. When the stochastic ...
Working Paper
Collusion in Repeated Auctions with Costless Communication
In this paper, we present a model of repeated first-price private value auctions in which the bidders have access to a cheap talk communication mechanism. In this framework, messages allow bidders to transmit their preference rankings over the goods to be auctioned, similar to Pesendorfer (2000). We show that collusion through this static mechanism not only dominates the static bid rotation mechanism presented by McAfee and McMillan (1992), but it is also not strictly dominated by the dynamic bid rotation mechanism presented by Aoyagi (2003). However, we show that asymptotic efficiency of ...
Working Paper
The boy who cried bubble: public warnings against riding bubbles
Attempts by governments to stop bubbles by issuing warnings seem unsuccessful. This paper examines the effects of public warnings using a simple model of riding bubbles. We show that public warnings against a bubble can stop it if investors believe that a warning is issued in a definite range of periods commencing around the starting period of the bubble. If a warning involves the possibility of being issued too early, regardless of the starting period of the bubble, it cannot stop the bubble immediately. Bubble duration can be shortened by a premature public warning, but lengthened if it is ...
Working Paper
(A)symmetric Information Bubbles: Experimental Evidence
Asymmetric information has been necessary to explain a bubble in past theoretical models. This study experimentally analyzes traders? choices, with and without asymmetric information, based on the riding-bubble model. We show that traders have an incentive to hold a bubble asset for longer, thereby expanding the bubble in a market with symmetric, rather than asymmetric information. However, when traders are more experienced, the size of the bubble decreases, in which case bubbles do not arise, with symmetric information. In contrast, the size of the bubble is stable in a market with ...
Working Paper
The Fragility of Perfectly Safe Digital Money
Digital money differs from previous forms of money in an important way: it unbundles trust. Instead of relying on a trustworthy institution to settle payments, it relies on decentralized verification, whose cost is priced separately through congestion-sensitive gas fees. This arrangement creates a novel fragility from the interaction of two opposing forces: network externalities, which make digital money more valuable as adoption rises, and congestion fees, which make it more costly to use. We show that these forces generate strategic complementarities in redemption decisions and can create ...
Working Paper
Collateral Runs
This paper models an unexplored source of liquidity risk faced by large broker-dealers: collateral runs. By setting different contracting terms on repurchase agreements with cash borrowers and lenders, dealers can source funds for their own activities. Cash borrowers internalize the risk of losing their collateral in case their dealer defaults, prompting them to withdraw it. This incentive creates strategic complementarities for counterparties to withdraw their collateral, reducing a dealer's liquidity position and compromising her solvency. Collateral runs are markedly different than ...
Journal Article
The Trade-Offs of Counterterrorism Policies
This article provides a modern overview of counterterrorism tools and their trade-offs for curbing terrorist attacks and their consequences. Defensive and proactive countermeasures constitute two main classes of counterterror tools deployed by targeted governments. The primary drawback of defensive actions, which make terrorist attacks more costly and less apt to succeed, is attack transference that shifts the mode, venue, or target of attacks to those less protected. In contrast, offensive proactive measures, which confront the terrorists directly, may result in backlash as terrorist ...
Working Paper
A Strategic Analysis of Narcoterrorism: Counterterrorism, Terrorist Extortion, and Illicit Drug Trafficking
The paper presents a novel strategic analysis of narcoterrorism where a developing country’s terrorist group extorts home drug farmers to finance terror attacks. A developed country’s counterterror actions are motivated by the harm its residents endure from those attacks. The developed country’s counterterrorism involves efforts to destroy the drug crop abroad. The analysis begins with the drug price being exogenously fixed, followed by a “large-country case’’ with a market-determined drug price. The extension introduces a fourth participant, consisting of the developed ...
Working Paper
Collaboration in Bipartite Networks, with an Application to Coauthorship Networks
This paper studies the impact of collaboration on research output. First, we build a micro founded model for scientific knowledge production, where collaboration between researchers is represented by a bipartite network. The equilibrium of the game incorporates both the complementarity effect between collaborating researchers and the substitutability effect between concurrent projects of the same researcher. Next, we develop a Bayesian MCMC procedure to estimate the structural parameters, taking into account the endogenous matching of researchers and projects. Finally, we illustrate the ...
Working Paper
Interjurisdictional Competition and Location Decisions of Firms
We examine the welfare properties of alternative regimes of interjurisdictional competition for heterogenous mobile firms. Firms differ not only in terms of the degree of mobility across jurisdictions but also in terms of productivity. Alternative taxation regimes represent restraints on the discretionary powers of taxation of local governments. We find that average welfare is higher under discretionary and more efficient taxation regimes (in the sense of minimizing deadweight losses from distortionary taxation) when firms are highly mobile. In this situation, further limiting competition by ...