The Economic Efficiency of Policy Reform and Partial Market Liberalization under Transaction Costs

The article presents an integrated analysis of the effects of domestic and trade policy reform on resource allocation and welfare under transaction costs. It develops a general multiagent, multicommodity model, where transaction costs are the costs of resources used in the exchange process. The influence of domestic and trade policy (including both price and quantity instruments) on distorted market equilibrium is analysed. Alternative concepts of distorted equilibrium are presented and investigated. They provide a basis for evaluating the effects of multilateral partial market liberalization on resource allocation and welfare under transaction costs. New conditions are derived under which multilateral policy reforms generate Pareto improvements.     

Does and Should a Commodity Medium of Exchange Have Relatively Low Storage Costs?

I provide new existence and welfare results for a version of the Kiyotaki-Wright model. I construct an equilibrium where all agents use mixed strategies. Consequently, an object with a higher storage cost must have a higher acceptability. Therefore, the endogenous transaction pattern corresponds to the observation that money is dominated in rate of return by other assets (e.g., bonds), something that is a central issue in monetary economics. Furthermore, at least in a neighborhood of equal storage costs, the equilibrium that I construct Pareto dominates alternative equilibria in which better objects are widely accepted.     

投资选择的交易成本——一个从宏观调控层面的分析

本文基于现有的关于交易成本的研究通常集中在以产权为核心的交换过程 ,而对宏观调控层面可能会引起交易成本的分析没有受到应有关注的事实 ,认为新制度分析包含着政策层面上的交易成本思想 ,政府的宏观调控会导致投资选择的交易成本。文章根据投资者在投资选择过程中是否承担以及在多大程度上承担由政策引致的交易成本 ,将投资者在某时期的最终定位划分为三大集群 ,在给出相应的基本平衡式的基础上 ,运用交易成本范畴对投资者的投资选择作出了一种间接博弈的解释。本文的分析在一定程度上说明了现实投资容易偏离宏观调控的原因。     

Discrete Walrasian exchange process

In an exchange economy, we define a discrete exchange process, which is Walrasian, since the trades are determined by the equilibrium allocation of the local equilibrium. We prove that this process attains a Pareto optimal allocation after a finite number of steps and the local equilibrium price then supports the Pareto optimal allocation. Furthermore, along the process, the allocation remains feasible and the utility of each consumer is non-decreasing.     

Endogenous Specialisation and Endogenous Principal-agent Relationship

The paper develops a general equilibrium model with endogenous principal-agent relationship within a framework of consumer-producer, economies of specialisation, and transaction costs. It is shown that if transaction efficiency is low, then autarky is chosen as the general equilibrium where no market and principal-agent relationship exists. As transaction efficiency is improved, the equilibrium level of division of labour increases, comparative advantage between ex ante identical individuals emerges from the division of labour, and the number of principal-agent relationships increases. The following features of the model distinguish it from other principal-agent models in the literature. The principal-agent relationships are not only endogenous, but also reciprocal between different specialists. In a general equilibrium environment, choice between pure pricing and contingent pricing is endogenised. In the paper, the implications of endogenous transaction costs caused by moral hazard for the equilibrium extent of the market and related degrees of market integration, production concentration, trade dependence, diversity of economic structure, and productivity are explored. The model predicts two interesting phenomena: a man might work harder for the market with moral hazard than working for himself in the absence of moral hazard; a market with moral hazard might be Pareto superior to autarky with no moral hazard.     

国际制度的形式选择——一个基于国家间交易成本的模型

根据制度化水平的三个维度,国际制度安排的基本形式可分为非正式协议、自我实施的正式协议、一般的正式国际组织和超国家组织。那么,缔约国如何在上述国际制度安排形式之间进行选择?本文尝试从国家间交易成本的角度为这一问题提供一个解释模型。国家间交易成本包括国家间治理成本与国家间缔约成本两个部分。国家间治理成本随着制度化水平的提高而递减,国家间缔约成本随着制度化水平的提高而递增。缔约国在选择国际制度安排形式时,将在国家间治理成本与国家间缔约成本之间进行权衡。作为理性的国际行为主体,缔约国在交易收益给定的情况下,将选择使国家间交易成本最小化的国际制度安排形式。根据这一制度选择模型,本文进一步提出了分别涉及问题领域敏感性、国家同质性、透明度、资产专用性、不确定性和交易频率的六个假说。     

Efficiency criteria for optimal laws: Objective standards or value judgements?

No discipline or combination of disciplines can provide a value-free basis for prescribing a constitution or any set of rules. Nevertheless, economists frequently compare alternative institutional and contractual arrangements and confidently identify which are more efficient without noting that their conclusions rest on the implicit welfare functions chosen and the presumption that values can be measured by outside observers. Moreover, comparing institutions on the basis of equilibrium conditions that will never be attained in a world of change and uncertainty ignores all information about the process of change itself. At best, economics can explain why certain rules exist and how different rules affect the welfare of individuals and the allocation of resources.—The paper focuses on the concept of efficiency taking account of transaction costs and the system of property rights. It then examines the belief that market prices and wealth are a suitable measure of value, the status of legal rules as a “common” good, and the limitations of Pareto criteria in assessing efficiency. The present paper reflects joint research with Robert J. Staaf on the problems of efficiency and subjective value (De Alessi and Staaf 1989a, 1989b, and 1991) and evolved from De Alessi (1990, 1991). I gratefully acknowledge helpful criticisms by Giuseppe Bognetti, Raymond P.H. Fishe, Jack Hirshleifer, A.G. Holtmann, Fred S. McChesney, Roger E. Meiners, Svetozar Pejovich, and especially Robert J. Staaf, who reviewed an early draft and helped focus my thinking on this and other topics. I am also pleased to acknowledge the financial support and stimulating intellectual environment provided by the International Centre for Economic Research (ICER) in Turin, Italy.     

On the second optimality theorem of welfare economics

To what extent does the second optimality theorem of welfare economics (every Pareto optimal allocation can be repesented as a Walras equilibrium allocation) remain valid when preferences are allowed to be locally satiated? It is always valid for an exchange economy, and is valid for a production economy if there is a consumer who is not locally satiated, but not in general for a production economy where all consumers are locally satiated. A generalized equilibrium is defined, which includes the Walras equilibrium as a special case. Every Pareto optimum can be represented as a generalized equilibrium allocation. Furthermore, every Pareto optimal utility distribution can be realized by a Walras equilibrium allocation.     

科斯三定理的新表述与新证明

科斯第二定理指出,在交易费用大于零的现实世界,产权的不同界定会对资源配置效率产生影响。政府(或法院)的基本原则应该是把权利界定给能以较低交易费用解决外部性问题的一方。科斯第三定理的准确含义是,在交易费用大于零的现实世界,制度安排的生产本身是有成本的,净收益最大的制度安排就是最佳的选择。科斯第二、三定理为市场经济中普遍存在的外部性问题提供了新的解决措施和科学的决策原则,间接意味着科斯并非政府干预的完全反对者,科斯定理也不足以成为有些学者把新制度经济学定性为新自由主义的充分理由。     

The Important Thing Is Not (Always) Winning but Taking Part: Funding Public Goods with Contests

This paper considers a public good game with heterogeneous endowments and incomplete information affected by extreme free riding. I overcome this problem through the implementation of a deterministic contest in which several prizes may be awarded. I identify a monotone equilibrium, in which the contribution is strictly increasing in the endowment. I prove that it is optimal for the social planner to set the last prize equal to zero, but otherwise total expected contribution is invariant to the prize structure. Finally, I show that private provision via a contest Pareto‐dominates public provision and is higher than the total contribution raised through a lottery.     

Market Entry Regulation and International Competition*

We analyze a non‐cooperative two‐country game where each government decides whether to allow free market entry of firms or to regulate market access. We show that a Pareto‐efficient allocation may result in equilibrium. In particular, if the cost difference between home and foreign production is “significant,” production will be located in the cost‐efficient country exclusively; and if this cost difference is even “substantial,” the induced allocation is also Pareto efficient. Only if the cost difference is “insignificant,” production may take place in both countries and the allocation is inefficient.     

On the Efficiency of Decentralized Exchange with Resale Possibilities

This paper studies decentralized exchange by bilateral matching and bargaining when resale is possible. Decentralized exchange involves the risk that goods and services may be allocated inefficiently; if low-valuation buyers consume while high-valuation buyers do not, then social welfare is reduced. If resale is possible and transaction costs are negligible, we would nevertheless expect an efficient allocation to result from decentralized exchange. This paper suggests that this depends on the nature of the commodity; while the allocation of a durable good will be efficient, the allocation of a "consumable" good need not.     

Statistical Discrimination and Efficiency

This paper asks whether statistical discrimination is a market failure. I consider the problem for a utilitarian social planner who operates in an environment that can generate statistical discrimination as an equilibrium phenomenon. It is found that there are potential efficiency gains from discrimination in terms of reduced "mismatch" between workers and jobs. Whether the solution to the planning problem involves discrimination depends on the trade-off between the informational gains of specialization and the losses in terms of increased investment costs.     

市场分割与资源错配*——基于生产率分布视角的理论与实证分析

资源错配已成为新常态下制约经济增长的重要因素。现有文献主要从要素市场扭曲视角分析了资源错配问题,而对市场分割与资源错配的研究相对缺乏。本文试图从这方面进行探讨。理论部分将市场分割引致的制度性交易成本加入企业利润函数,分别讨论企业在省内和省外市场的生产行为和定价策略,通过垄断竞争局部均衡模型分析市场分割对资源错配的影响机制。实证部分利用中国工业企业数据库的大样本微观数据对上述机制进行计量检验,以各省市之间的运输成本作为市场分割的工具变量避免估计结果的内生性问题。本文研究发现,国内市场分割指数减少一个百分点可以使资源错配程度降低394%。因此,减少市场分割所引致的制度性交易成本对于深化供给侧结构性改革、提升资源配置效率具有重要政策含义。     

An Allocation Rule with Wealth-Regressive Tax Rates

We introduce a public good allocation rule whose direct implementation by asking agents their endowments leads to Nash equilibrium outcomes—always Pareto dominating voluntary contributions outcomes. Although the Nash equilibrium allocations induced by this rule are not Pareto optimal in general, they are so in two-person economies.     

One size may not fit all: Welfare benefits and cost reductions with optional differentiated household electricity rates

We consider optional time-of-use (TOU) pricing for residential consumers, offered by a publicly regulated electricity supplier, as an alternative to a single TOU or flat rate structure. An equilibrium model explores and quantifies the effects of such pricing on welfare, consumption, and production costs. The supplier offers to each household a menu of possible rate structures obtained by maximizing a collective welfare function subject to three restrictions: Pareto efficiency, incentive compatibility, sufficiency of supplier revenue to cover costs. Simulations based on realistic calibration of the model demonstrate that optional pricing can increase overall consumer welfare and reduce average cost.     

Optimal fixed cost subsidies in Melitz-type models

This paper analyzes the reallocation and welfare effects of fixed cost subsidies in a Melitz-type model. In a closed economy, the planner trades off product variety and average productivity effects. Neither subsidies on entry fixed costs nor on operating fixed costs are welfare enhancing. These results reflect the Pareto optimality of the laissez faire equilibrium. In a “small” open economy à la Demidova and Rodríguez-Clare (J Int Econ 78(1):100–112, 2009), an entry fixed cost subsidy does not enhance welfare, while a small operating fixed cost subsidy does. Only the latter affects the relative attractiveness of exporting. The average firm thus realloactes labor from export to domestic activity and operates at a smaller scale, which allows for a larger increase in domestic product variety than in the closed economy.     

The Core, Transaction Costs, and the Coase Theorem

This paper clarifies and synthesizes elements of the two decade old debate concerning the Coase theorem and the empty core. Five lessons can be derived from this debate. First, the Coase theorem may break down when there more than two participants (provided the additional participants bring an additional externality to the table). Second, the problem of the empty core does not disappear in a world of positive transaction costs. Under reasonable assumptions about the transactions technology, transaction costs may well exacerbate the empty-core problem. As a consequence, it is important to differentiate between transaction costs (when the core exists) and costs due to the empty core because each has different implications for rationalizing institutional arrangements. Third, the Coase theorem will not break down when the number of participants increases if the new participants do not bring additional externalities with them. If, however, additional participants bring in additional externalities, then the core may be empty and Pareto efficiency may not emerge from costless negotiations. Fourth, Pareto Optimality can be achieved when the core is empty by judicious use of penalty clauses, binding contracts, and constraints on the bargaining mechanism. Fifth, when a non-excludable public good is involved, a free-rider problem arises as the number of agents increases, and this undermines the Coase theorem; in this case, Coasean efficiency requires the participation of all agents affected by the externality in the writing of binding contracts.     

Information technology and the rise of household bankruptcy

Several studies have attributed the rise of household bankruptcy in the past two decades to the decline of social stigma associated with default. Stigma explanations, however, cannot account for the large increase in the use of unsecured credit during this period. I explain the simultaneous increase in bankruptcy rates and unsecured credit as the result of improvements in credit-rating technologies. Using an environment where borrowers face heterogeneous default costs (unobservable by creditors), I show that such improvements will lead to agents with high default costs, i.e., “safe” borrowers, being able to borrow more. A quantitative example illustrates that this increased access to credit can be large enough to raise both equilibrium borrowing and default rates.