Mixed markets and crime

This paper specifies and solves a two-stage, game theoretic model of a mixed market for crime control. In the first stage of the model, private targets and the government choose levels of policing. In the second stage, criminals choose targets and the severity of the crimes that they commit.The paper's key results are as follows. First, private policing can both divert crime to targets that lack private protection and also increase the severity of the crime that these less-protected targets suffer. Second, an increase in private policing reduces the aggregate expenditure on traditional policing. This is an instance of a political incentive externality, where private policing affects the objective function of the government. Specifically, it reduces the level of traditional policing that is consistent with the Samuelson condition for efficient provision of a public good. Third, the substitution of private for public policing carries with it a change in the technology of policing. In effect, private policing leads to a shift from enforcement and punishment towards monitoring and target hardening. This, in turn, may lead to an increase in the severity of crime. Fourth, the mixed policing equilibrium is inefficient, and, in some situations, mixing may reduce the utility of all targets.     

Security and Fear: The Geopolitics of Intimate Partner Violence Policing

This paper builds upon feminist critiques of security interventions in the name of ‘protecting women’ to link United States municipal policing practices for intimate partner violence with global security interventions. Policing intervention into intimate partner violence emerged in the last twenty-five years; however as I argue, these policing practices are situated within narrow conceptions of masculinist security that often fail to address victims' multiple security needs. While not dismissing the importance of arresting intimate partner violence abusers, this paper examines the ways that policing can create additional and different embodied fears and insecurities for victims. Using the tools of emotional geopolitics, this paper traces victims’ fears following the arrest of their abuser to understand the temporal and spatial moments of fear in relation to security interventions. This methodological approach examines the limitations of masculinist protection while reimagining security to consider the emotional security needs and fears of those being protected.     

R&D,free entry,and social inefficiency

We employ a three-stage game model with cost-reducing research and development (R&D) that is subject to spillovers to consider the problem of excess entry under free-entry equilibrium relative to the social optimum. Firms choose to enter or exit a market in the first stage, choose R&D in the second stage and output in the final stage. Results show that there is socially inefficient or excessive entry in equilibrium. However, we uniquely demonstrate that research spillovers hold the key to whether established results regarding socially inefficient entry hold. Specifically, excessive entry occurs as long as research spillovers are relatively small, but this is not necessarily the case with large spillovers. Some policy implications are discussed.     

Endogenous entry and self-selection in private value auctions: An experimental study

This paper presents the results of an experimental study of endogenous entry in first-price independent private value auctions. N potential bidders simultaneously decide whether to participate in an auction or receive a known outside option. In the second stage, entrants submit bids after learning their own private values and the number of entrants. An equilibrium model of heterogeneous risk averse bidders implies a self-selection effect, where bidding in the auction is lower with endogenous entry because only less risk averse bidders enter. This effect is confirmed by the experiment. We also observe excessive entry relative to the theoretical model.     

The limit of oversight in policing: Evidence from the 2001 Cincinnati riot

Oversight in policing involves investigating officers for complaints against them and punishing them if found guilty. Officers commit errors in policing and, since reducing the error rate is costly, they cut down policing to avoid complaints. This paper tests the hypothesis that oversight reduces policing by exploiting a quasi-experiment: In April 2001, a riot erupted in Cincinnati after a white officer shot dead an unarmed African-American adolescent; the sharply increased media attention, a Justice Department investigation, together with a “racial profiling” lawsuit, exogenously raised the expected penalty of an officer's errors. Compared with the period from January 1999 to March 2001, arrests during the remaining months of 2001 fell substantially. The decline was more significant for offenses where the error rate was higher. Communities with a greater percentage of African-Americans experienced greater arrest reductions. Felony crime surged during the same period.     

Industry equilibrium with outside financing and moral hazard: Implications for market integration

In this paper, we study industry equilibrium under the assumptions that (1) firms need outside financing and (2) they have a moral hazard problem in taking potentially excessive risks. We characterize an industry equilibrium with credit rationing, where firms choose not to take risks, and compare this to the industry equilibrium in the absence of credit rationing. In both cases, we show that competition increases and prices decline as markets integrate. However, in markets with credit rationing there is typically more exit, a smaller decline in prices and, most strikingly, the market value of the industry increases rather than decreases.     

A bank runs model with a continuum of types

We consider a bank runs model à la Diamond and Dybvig (1983) [3] with a continuum of agent types, indexed by the degree of patience. Much of our understanding based on the two-type model must be modified. The endogenous determination of a cutoff type is central to the analysis. In the case where the bank can credibly commit to a contract, the optimal contract results in socially excessive early withdrawals in every equilibrium of the post-deposit subgame. Thus, even at the best equilibrium the socially efficient outcome is not achieved, and agents? behavior exhibits features of a bank run. In the case where commitment is not possible, there are strictly more early withdrawals and strictly lower welfare than the full-commitment equilibrium.     

Information acquisition in conflicts

This paper considers incentives for information acquisition ahead of conflicts. First, we characterize the (unique) equilibrium of the all-pay auction between two players with one-sided asymmetric information where one player has private information about his valuation. Then, we use our results to study information acquisition prior to an all-pay auction. If the decision to acquire information is observable, but not the information received, one-sided asymmetric information can occur endogenously in equilibrium. Moreover, the cut-off values of the cost of information that determine equilibrium information acquisition are higher than those in the first best. Thus, information acquisition is excessive. In contrast, with open or covert information acquisition, the equilibrium cut-off values are as in the first best.     

论中国CPA审计法律责任的制度缺失与重构

目前 ,我国CPA在涉及上市公司审计业务过程中 ,发生的舞弊现象十分严重 ,但是在处罚中存在严重的法律责任制度缺失问题 ,突出表现在法律责任缺乏界定依据 ,起诉主体法律条文不明 ,诉讼门槛起点太高 ,赔偿金额难以确定 ,处罚形式避重就轻。CPA参与上市公司舞弊的重要原因是 :民事赔偿机制严重缺失 ,地方政府过于庇护。重构CPA审计法律责任的制度设想 :明确CPA法律责任的界定依据和机构 ,建立民事责任赔偿机制 ,大力推广合伙制会计师事务所 ,建立CPA法律责任风险防范机制     

Price competition in markets with customer testing: the captive customer effect

We introduce product differentiation into the analysis of price competition in markets where suppliers test customers in order to assess whether they will pay for received goods or services. We find that, if the degree of differentiation is sufficiently high, suppliers may improve the average probability that their clientele will pay by charging higher prices. This helps suppliers to sustain high prices in equilibrium. Moreover, endogenizing locations in product space, we demonstrate that the high price level can be implemented in a pure-strategy subgame-perfect equilibrium with a high degree of differentiation. This is in contrast to the original Hotelling model with linear travel costs where a pure-strategy subgame-perfect equilibrium fails to exist.     

An Observable Delay Game with Unionised Managerial Firms

The endogenous order of moves is analysed in a unionised Cournot duopoly with managerial delegation and firm‐specific unions, where firms choose whether to set quantities sequentially or simultaneously. It is shown that, in contrast to the standard duopoly with profit‐maximising firms where both firms prefer to be the leader and thus simultaneously chosen quantities emerge as an endogenous equilibrium, a rich set of equilibrium outcomes may occur. In particular, the result of sequential choices, which reverses the conventional wisdom in regard to Cournot duopolies, emerges as the endogenous equilibrium when the union's wage orientation is sufficiently high.     

Capital Mobility In A Second–Best World: Moral Hazard With Costly Financial Intermediation

The paper studies financial integration in the presence of moral hazard, where banks may mitigate excessive risk by costly monitoring. The author shows that a drop in banks' cost of funds, less efficient intermediation technology, higher macroeconomic volatility, and a more generous deposit insurance raise the riskiness of projects in a competitive equilibrium. Overborrowing would arise even in the absence of deposit insurance in circumstances where the cost of risk monitoring is high, the banks' cost of funds is relatively low, and macroeconomic volatility is high. Reforming an inefficient banking system and improving its operation is a precondition for successful financial integration.     

Free and second-best entry in oligopolies with network effects

We compare the number of firms in equilibrium in a Cournot industry with positive network effects and complete compatibility, under free and second-best entry. Under free entry, the firms decide whether to enter the market or not; in the second-best problem, the number of firms is established by the regulator to maximize social welfare (the regulator controls entry but not production). We show that when individual equilibrium output decreases with entry (business-stealing competition), free entry may lead to more or less firms than the second-best problem. This contrasts with the standard (nonnetwork) Cournot oligopoly model, wherein with business-stealing competition, free entry leads to an excessive number of firms compared with the second-best solution.     

Modeling self-censoring of polluter pays protest votes in stated preference research to support resource damage estimations in environmental liability

The identification and treatment of protest response in stated preference (SP) research such as contingent valuation is an underdeveloped area. Protest related to the polluter pays principle (PPP) is expected to pose an important hurdle to the application of SP research in environmental liability claims, for instance under the European Environmental Liability Directive. Our main objective is to test the effect of PPP induced protest votes on welfare measures for lost passive use value using different treatment procedures. We argue for a more reliable and defensible indicator of willingness to pay (WTP) in environmental liability litigation cases than current standard removal practices in cases where protest votes affect sample representativeness. Analyzing the impact of PPP-based protest response on WTP values with the help of a Full Information Maximum Likelihood sample selection model, a significant correlation is found between the decision to participate in the CV market and the WTP bids. Self-censoring biases average WTP and is correlated with factors such as respondent use of the resource and disposition towards its future protection. Simply removing protest response from the sample is indefensible and results in a biased estimation of WTP.     

Can a larger market foster R&D under monopolistic competition with variable mark-ups?

We study monopolistic competition with symmetric directly additive preferences (generating variable mark-ups) and an endogenous technology choice. Each firm chooses an investment in R&D to decrease its marginal cost. We prove that the equilibrium R&D investment increases with market size (a larger population or trade) only if the price-elasticity of demand is an increasing function. Together with the output levels, such equilibrium investments may be socially excessive or insufficient, depending on whether the elasticity of the subutility is increasing or decreasing. The main implication is that opening up to free trade can foster R&D through variable mark-ups.     

Dynamics of learning and the financial instability hypothesis

The financial instability hypothesis advanced by Minsky (1975, 1982, 1986) is not compatible with the rational expectations hypothesis in that firms persist in adopting liability structures which give rise to outcomes which in turn violate the assumptions on the basis of which those liability structures were chosen. This occurs both in the case of excessive caution following a period of instability, and excessive boldness following a long expansion. However, within the context of a formal model, it is shown that such behavior need not result from irrationality or myopia, but may arise instead from the fact that agents do not have sufficient information to compute the RE magnitudes, and must therefore rely on a learning process that makes use of publicly observable data. The dynamics of two commonly used learning processes are examined, one of them Bayesian. Both generate trajectories which differ sharply in their qualitative properties from the RE trajectory, and are in fact quite consistent with the predictions of the FIH.For useful comments and suggestions I would like to thank Duncan Foley, Peter Skott, Anwar Shaikh, Toichiro Asada, Reiner Franke, and two anonymous referees, without implicating them in errors that remain.     

Finitely repeated games with monitoring options

We study finitely repeated games where players can decide whether to monitor the other players? actions or not every period. Monitoring is assumed to be costless and private. We compare our model with the standard one where the players automatically monitor each other. Since monitoring other players never hurts, any equilibrium payoff vector of a standard finitely repeated game is an equilibrium payoff vector of the same game with monitoring options. We show that some finitely repeated games with monitoring options have sequential equilibrium outcomes which cannot be sustained under the standard model, even if the stage game has a unique Nash equilibrium. We also present sufficient conditions for a folk theorem, when the players have a long horizon.     

LIABILITY AND ANTIFRAUD INVESTMENT IN FINTECH RETAIL PAYMENT SERVICES

Motivated by recently introduced retail payment schemes using information technology, often called “FinTech,” we examine the effect of fraud liability regime on antifraud investment in a FinTech payment scheme, where the front‐end and back‐end services are vertically separated. In an environment where a FinTech payment service provider (FPP) covers only the front‐end services, delegating the back‐end services to an integrated payment service provider (IPP) such as banks and credit card companies, we show that under the IPP liability regime, the IPP invests more in general, while the respective investment depends on the range of the access fee under the FPP liability regime. Specifically, given a sufficiently great loss from accident, if the access fee is in a certain range, the FPP liability regime is superior in terms of antifraud investment. When the FPP makes its indirect revenue from its user base in addition to the revenue from user fees, we can observe greater antifraud investment under both liability regimes, but the overall decrease in fraud probability is higher under the IPP liability regime. Our results suggest that it might be desirable to induce FPP liability regime, which might necessitate regulating the access fee to achieve such an outcome. (JEL G23, G28, D43, L22)     

Educational Policy in a Credit Constrained Economy with Skill Heterogeneity*

An overlapping‐generations model where agents choose whether to become educated when young is presented. Education enhances productivity, but needs to be financed by borrowing. Because of the possibility of default, lenders may ration credit. We characterize the steady‐state equilibrium with and without credit constraints and show that credit constraints are associated with lower education and a lower real interest rate. We then study the role of public policy in remedying the inefficiency which occurs with credit market imperfections and examine whether public education can improve on the constrained equilibrium.     

Competition Among Universities and the Emergence of the Élite Institution

We consider an environment where two education institutions compete by selecting the proportion of their funding devoted to teaching and research and the criteria for admission for their students, and where students choose whether and where to attend university. We study the relationship between the cost incurred by students for attending a university located away from their home town and the equilibrium configuration that emerges in the game played by the universities. Symmetric equilibria, where universities choose the same admission standard, only exist when the mobility cost is high; when the mobility cost is very low, there is no pure strategy equilibrium. For intermediate values of the mobility cost, only asymmetric equilibria may exist; the final section of the paper provides an example where asymmetric equilibria do indeed exist for a plausible and robust set of parameters.