Private Enforcement against Collusion in Mechanism Design

This paper brings a new point of view into the theory of collusion-proof mechanism design, which highlights the principle of divide and conquer. We relax the restriction of publicly enforced grand contract in the framework of Laffont-Martimort-Itoh, which allows us to incorporate the approach of private enforcement into the theory. In a setting of moral hazard with mutually observable actions, we develop a multi-stage mechanism integrated with secret reporting and private transferring and show that the first-best allocation can be implememted in spite of collusion, which implies that preventing collusion entails no cost under new approach.secret report; private enforcement; collusion-proof mechanism design

Optimal Information Revelation by Informed Investors

This paper studies the structure of optimal finance contracts in an agency model of outside finance, when investors possess private information. We show that, depending on the intensity of the entrepreneur’s moral hazard problem, optimal contracts induce full, partial, or no revelation of the investor’s private information. A partial or nonrevelation of information is optimal, when it mitigates an undersupply of effort by the entrepreneur due to moral hazard

An optimal Voting System when Voting is costly

We consider the design of an optimal voting system when voting is costly. For a private values model with two alternatives we show the optimality of a voting system that combines three elements: (i) there is an arbitrarily chosen default decision and non-participation is interpreted as a vote in favor of the default; (ii) voting is sequential; (iii) not all voters are invited to participate in the vote. We show the optimality of such a voting system by first arguing that it is first best, that is, it maximizes welfare when incentive compatibility constraints are ignored, and then showing that individual incentives and social welfare are sufficiently aligned to make the first best system incentive compatible. The analysis in this paper involves some methods that are new to the theory of mechanism design, and it is also a purpose of this paper to explore these new methods.Voting; mechanism design; committees.

MULTIPLE AGENTS, AND AGRICULTURAL NONPOINT-SOURCE WATER POLLUTION CONTROL POLICIES

Assuming asymmetric information over farmer profits and zero transaction costs, prior literature has suggested that when regulating nonpoint source water pollution, a tax on management practices (inputs) can implement full-information allocations and is superior to a tax on estimated runoff. Using mechanism design theory under asymmetric information, this paper show that under the same assumptions, management practice taxes and taxes on estimated runoff are equally efficient.Environmental Economics and Policy,

Leonid Hurwicz, Eric S. Maskin and Roger B. Myerson: Mechanism Design Theory

Scientific Background, The Nobel Prize in Economic Sciences 2007. Economic transactions take place in markets, within firms and under a host of other institutional arrangements. Some markets are free of government intervention while others are regulated. Within firms, some transactions are guided by market prices, some are negotiated, and yet others are dictated by management. Mechanism design theory provides a coherent framework for analyzing this great variety of institutions, or "allocation mechanisms", with a focus on the problems associated with incentives and private information.Mechanism Design; Asymmetric Information

Interim Information in Long Term Contracts

This paper studies the effectiveness of interim information in reducing inefficiencies in long term relationships. If the interim information is verifiable, it resolves all problems of asymmetric information. Under nonverifiability, the information alleviates the contracting problem only partially and its optimal use depends on the signal’s accuracy and timing. Precise and early signals enable the principal to extract all rents and adjust allocations closer to the first best. Imprecise or late signals affect only future allocations and leaves the agent with a rent. Due to a failure of the revelation principle, the optimal contract under non–verifiability is derived by employing the theory of communication equilibrium

Entrepreneurial Financing, Advice, and Agency Costs

This paper studies the interplay between advice and agency costs in entrepreneurial financing. We show that advise may exacerbate agency problems, because the agent may use it at the investor's expense and thereby hurt investors. Depending on the magnitude of the agency problem, optimal financing relationship may induce full, partial, or no advice. Because the trade--off between the positive and negative effect of entrepreneurial advice is delicate, investors need to control the information flow carefully. This explains the dual role of financing and consulting by investors in entrepreneurial financing.optimal advice, agency costs, informed investors, entrepreneurial financing

Computational Mechanism Design: A Call to Arms

Game theory has developed powerful tools for analyzing decision making in systems with multiple autonomous actors. These tools, when tailored to computational settings, provide a foundation for building multiagent software systems. This tailoring gives rise to the field of computational mechanism design, which applies economic principles to computer systems design

Exit Options in Incomplete Contracts with Asymmetric Information

This paper analyzes bilateral contracting in an environment with contractual incompleteness and asymmetric information. One party (the seller) makes an unverifiable quality choice and the other party (the buyer) has private information about its valuation. A simple exit option contract, which allows the buyer to refuse trade, achieves the first–best in the benchmark cases where either quality is verifiable or the buyer’s valuation is public information. But, when unverifiable and asymmetric information are combined, exit options induce inefficient pooling and lead to a particularly simplecontract. Inefficient pooling is unavoidable also under the most general form of contracts, which make trade conditional on the exchange of messages between the parties. Indeed, simple exit option contracts are optimal if random mechanisms are ruled out