Joint implementation under asymmetric information and strategic behavior

Joint Implementation (JI) under the Framework Convention on Climate Change means that countries could partly offset their national abatement commitments by investing in CO₂ abatement projects abroad. JI is introduced as a mechanism for achieving a certain global abatement target less costly by separating the commitments from the implementation of measures. This paper studies the design of a JI contract when the investor has incomplete information about the foreign firm which carries out the JI project (the host). Asymmetric information leads to a decrease in the potential cost savings from JI. Furthermore, private information held by the potential host firm could give the firm a significant positive utility of participating in JI projects. The possibility of being a host for a JI project in the future can prevent potential host firms from investing in profitable abatement projects today. The paper analyzes the impact on emissions of CO₂ of strategic behavior among potential hosts for JI projects.     

Fundraising under two-dimensional asymmetric information: the case of mindless donations

The paper develops a model of charity’s choice of fundraising method under two dimensions of asymmetric information, quality and purpose. The main implication from this model is a separating equilibrium where the higher-quality charity uses a traditional fundraising method, while the lower-quality one exploits a low-stakes, take-it- or leave-it, ‘mindless’ method. Empirical results support the hypothesis that charities of lower quality are more likely to adopt the mindless fundraising method. Even so, consumers still choose to give in the equilibrium, due to the small requested amount of mindless donations, which disincentivizes serious thinking by consumers. The mindless method, along with purpose uncertainty, has the potential to alleviate the free-riding problem that is characteristic of public good provision and is, therefore, welfare improving.     

Adverse selection,asymmetric information,and foreign investment policies

This paper explores the welfare consequences of foreign investment taxation in a small open economy, based on the notion that the true productivity of imported capital may be unknown to policy-makers. It is shown that while asymmetric information between capital importers and the host government precludes the use of a productivity specific policy measure, an across-the-board policy suffers from the problem of adverse selection among capital imports of differential productivities. Conditions under which a reversal of the optimal foreign investment policy in the face of asymmetric information are examined.     

逆向选择条件下技术许可中非排他性价格契约研究

通过经典的委托代理理论的应用,文章揭示了一类逆向选择条件下的技术许可中非排他性价格契约理论的内在机理。文章认为,通过针对差的类型的技术使用者的包含可变费用的契约和对好的类型的技术使用者的纯固定费用的契约,可以达到有效的排他性技术许可的目的;但为了有效的激励,技术所有者事前要对好的类型的技术使用者转移一定的信息租。     

Risk aversion and incentive compatibility with ex post information asymmetry

Summary. The paper extends Diamond's (1984) analysis of financial contracting with information asymmetry ex post and endogenous “bankruptcy penalties” to allow for risk aversion of the borrower. The optimality of debt contracts, which Diamond obtained for the case of risk neutrality, is shown to be nonrobust to the introduction of risk aversion. This contrasts with the costly state verification literature, in which debt contracts are optimal for risk averse as well as risk neutral borrowers. Received: December 7, 1998; revised version: June 9, 1999     

Agri-environmental schemes: Adverse selection, information structure and delegation

This work analyzes alternative designs of agri-environmental schemes and how different incentive mechanisms impact on their overall efficiency. It focuses on spatial targeting and delegation in an asymmetric information context. First, the optimal contract under adverse selection is modeled. This model underlines the trade-off between information rents and allocative efficiency. The impact of spatial targeting is then addressed. Disaggregated information structures increase the optimal efforts asked of the farmers. It may also involve higher information rents and may reduce the net contributions of some farmers. Finally, the consequences of delegating authority within the principal-agent relationship are investigated. The results illustrate that spatial targeting and delegation, when combined, have asymmetric impacts on farmers' payoffs.     

The core of an exchange economy with asymmetric information

This paper studies the core of an exchange economy in which agents are asymmetrically informed about states of nature. An agent's information is modelled as part of his consumption set and thus as part of his consumption plans. If an agent joins a coalition, his information changes according to an exogenously given information rule, a concept introduced by B. Allen. It is shown that an exchange economy with asymmetric information generates a well defined cooperative game and that the core of this game and thus the core of the underlying economy is nonempty. In contrast to recent results, this holds independently of the given information rule.     

Balancedness and the core in economies with asymmetric information

Summary. A condition is given that is equivalent to balancedness of all NTU-games derived from an exchange economy with asymmetric information when endowments are variable. The condition is applicable to the ex-ante model with expected utilities, but also to the more general model of Arrow-Radner type economies without subjective probabilities. Differences in the interpretation of measurability assumptions between these two models are discussed, and another model with information consistent utility functions is developed in which the result would also hold. Received: December 12, 2001; revised version: November 1, 2002 RID="*" ID="*"I thank two anonymous referees whose comments led to an improvement of the paper.     

Adverse Selection and Pigou Taxes

It id assumed that firms have different technologies, and that an environment protection agency knows which technologies exist, but not which is used by which firms. Neither the emissions of individual firms nor their total emissions are observable. The output of each individual firm, however, can be monitored without cost. Based on this information tax schemes are constructed which induce firms to produce the socially efficient output quantities. Conditions about cost functions are derived which ensure the existence of tax schemes which yield first best solutions.     

Weak and Strong Signals

Akerlof, Spence and Stiglitz showed that competitive markets can perform very poorly in the presence of informational asymmetry. In this paper I show that if there is a signaling technology which is sufficiently strong (i.e., the marginal cost of signaling declines sufficiently rapidly with quality) the cost of sorting is low and a Nash equilibrium exists. Empirically testable necessary and sufficient conditions for existence are derived. I further show that if Akerlovian participation constraints are added to a signaling model there is a minimum signaling threshold. Finally I argue that these conclusions hold regardless of whether it is the uninformed or informed agents who move first.
JEL classification : D 8     

Dynamic adverse selection and the supply size

In this paper we examine the problem of dynamic adverse selection in a stylized market where the quality of goods is a seller׳s private information while the realized distribution of qualities is public information. We obtain that full trade occurs in every dynamic competitive equilibrium. Moreover, we show that if prices can be conditioned on the supply size then a dynamic competitive equilibrium always exists, while it fails to exist if prices cannot be conditioned on the supply size and the frequency of exchanges is high enough. We conclude that the possibility to condition prices on the supply size allows us to reach efficiency in the limit for exchanges becoming more and more frequent, while otherwise the welfare loss due to delays of exchanges remains bounded away from zero.     

信息不对称条件下我国商业银行信贷资产安全分析

本文从信息经济学和行为金融学的特殊视角探讨了信息不对称条件下我国商业银行信贷资产不安全的形成机理,并创造性地对银行信贷资产安全内涵进行了界定,总结和提出了信贷交易中存在的5种主要信息不对称形式,特别是创新地提出了商业银行与商业银行之间、与信用中介评级机构之间存在的信息不对称问题,对于当前形势下加强和防范信贷经营中的超额授信、过度授信、关联企业等风险具有较强的实践意义.     

Exchange economies with asymmetric information: competitive equilibrium and core

Summary. A replica theorem is shown to hold for exchange economies with asymmetric information. In a replicated exchange economy with asymmetric information the set of all core elements with equal treatment is nonempty, but it is in general only a subset of the core. Nevertheless, the replica theorem and the presence of at least one core element with equal treatment suffice to show existence of a competitive quasi-equilibrium. Conditions on the initial endowments and the communication system are given to ensure that every competitive quasi-equilibrium is a competitive equilibrium.Received: 24 February 2003, Revised: 3 July 2003JEL Classification Numbers: C70, D50, D82.I thank an anonymous referee whose comments led to an improvement of the paper.     

非对称技术联盟小企业资源依赖对伙伴选择与双重价值占有影响

资源依赖理论指出组织生存的关键在于控制与其他组织关系的能力,而处于弱势地位的小企业如何控制核心企业的关键资源和关系在理论界缺少深入研究,建立互惠互利的非对称联盟似乎成为有效途径。基于资源依赖理论,选取水环境治理行业185家小型科技企业为样本,提出并验证非对称技术联盟小企业资源依赖对伙伴选择和双重价值占有的影响。实证结果表明：小企业基于资源依赖可以通过市场导向和关系导向伙伴选择实现双重价值占有;关系导向伙伴选择对市场导向伙伴选择和双重价值占有关系起正向调节作用。     

基于声誉信息效应的战略伙伴逆向选择抑制研究

企业声誉传递了企业内在特征信息,能为潜在的战略伙伴提供有效的识别信号,从而抑制战略联盟伙伴的逆向选择。本文将声誉引入信号传递博弈模型,证明在声誉成本函数下,声誉信号可以使该博弈产生一个分离均衡,由此分析阐释了联盟企业可以利用声誉信号识别战略伙伴的机理与过程。     

Incentives in market games with asymmetric information: the core

Summary. This paper examines the ex ante core of a pure exchange economy with asymmetric information in which state-dependent allocations are required to satisfy incentive compatibility. This restriction on players' strategies in the cooperative game can be interpreted as incomplete contracts or partial commitment. An example is provided in which the incentive compatible core with nontransferable utility is empty; the game fails to be balanced because convex combinations of incentive compatible net trades can violate incentive compatibility. However, randomization of such strategies leads to ex post allocations which satisfy incentive compatibility and are feasible on average. Hence, convexity is preserved in such a model and the resulting cooperative games are balanced. In this framework, an incentive compatible core concept is defined for NTU games derived from economies with asymmetric information. The main result is nonemptiness of the incentive compatible core. Received: December 26, 2001; revised version: June 11, 2002 RID="*" ID"*" This work was financed, in part, by contract No 26 of the programme “P?le d'attraction interuniversitaire” of the Belgian government, and, in part, by research grant SBR93-09854 from the U.S. National Science Foundation. Much of my thinking about this topic was developed during a wonderful visit to CORE for the 1991–1992 academic year (on sabbatical from the University of Pennsylvania). This paper was originally circulated in December 1991 as CARESS Working Paper #91-38, Center for Analytic Research in Economics and the Social Sciences, Department of Economics, University of Pennsylvania and in February 1992 as CORE Discussion Paper 9221, Center for Operations Research and Econometrics, Université Catholique de Louvain, Louvain-la-Neuve, Belgium. RID="*" ID="*" At the very start of my research, Jean-Fran?ois Mertens was almost a co-author. Fran?ois Forges provided detailed comments at a later stage, during my visit to THEMA, Université Cergy-Pontoise, in Spring 1997. They are entitled to the customary disclaimer.     

Adverse selection under ignorance

Summary. We examine an adverse selection relationship in which the principal may ignore the ex ante distribution of the agent's types. The principal's behavior is described by a disutility function that covers the standard minimax regret and minimax loss criteria. We show that the incentive compatible and individually rational mechanism, which minimizes the maximal (or the minimal) principal's disutility over a set of priors, requires the efficient agents to realize the corresponding first-best actions and may demand actions lower than the first-best ones from less efficient agents. We also analyze the qualitative differences between the case in which the principal considers regrets and the case in which he considers losses. Received: 19 October 1998; revised version: 9 November 1999     

Incentive Contracts for Infrastructure,Litigation and Weak Institutions

In this paper we revisit incentive contract design in a simple setting, after developing a model that captures the fact that in weak institutional settings the procurement of large scale public works through contracts with strong incentives for private firms, may result in excessive litigation over contract terms. This result is possible because we assume that parties in litigation can influence (by purchasing better or more legal services) the observable merits of their case. In weak institutional settings, governments have an inherent disadvantage in these litigation contests. We show that a commitment to a prespecified level of litigation effort by the government, together with weaker incentive contracts, is a more efficient procurement mechanism.Jel Classification: D8, H57, H54, K41, K23, L51     

Adverse Selection in the Annuities Market and the Impact of Privatizing Social Security

The observation that few Americans purchase life annuities has often been attributed to adverse selection. A still unanswered question is whether observable price increases caused by adverse selection can be generated endogenously in a life cycle model. This paper calibrates a pure life cycle model for a characteristic US cohort and reproduces three stylized facts. Adverse selection increases annuity prices by 7–10 percent; the cost of adverse selection rises with the age of the annuitant; and the cost is smaller for females than for males. Social security privatization could reduce annuity prices by between 2 and 3 percent.