An Experimental Investigation of Excludable Public Goods

This paper extends the research on incentive compatible institutions for the provision of public goods by imposing a minimum contribution that must be met in order for an individual to enjoy the benefits of the public good. Excluding individuals who do not contribute at least the minimum transforms the linear n-player pure public goods game to an n-player coordination game with multiple, Pareto-ranked Nash equilibria. The experimental results show that exclusion increases contributions to the public good in most cases. However, an increase in contributions may not be sufficient to increase social welfare because there is a welfare cost to excluding individuals when the good is non-rival. Furthermore, exclusion can decrease both contributions and welfare in environments in which individuals fail to coordinate their contributions. The results are sensitive to the minimum contribution requirement and to the relative returns from the public and private alternatives.     

Power of Incentives with Motivated Agents in Public Organizations

Public service motivation is often considered as an argument for low‐powered incentive schemes in the public sector. In this paper, we characterize the optimal contract between a public regulator and an altruistic agent according to the degree α of public service motivation, when the type of the public service consumer is privately observed. We show that the requested effort is nondecreasing with α and can be higher than the first‐best level. Moreover, we show that the agent is put on a high‐powered contract when some customers are served but that this contract is associated with different types of consumers according to α. In contrast, the agent is never put on a cost‐plus contract. Finally, we show that the first‐best allocation can be achieved under budget balance for a degree of altruism higher than a threshold that we characterize.     

GRANTING AN EXIT OPTION TO CONDUCT AN AUDIT

We study a principal–agent relationship with auditing in which information from an audit is ‘soft’– by conducting an audit, the principal observes the agent's private information, but cannot obtain verifiable evidence on the information. Moreover, the principal's auditing effort is unverifiable in our model. Therefore, besides the agent's misreporting incentive, there is the principal's incentive to accuse the truthful agent even without auditing. If the principal's auditing effort is verifiable, granting no exit option to the agent is optimal although the principal can still accuse a truthful agent after the audit. We show that when the principal's auditing effort is unverifiable, granting an exit option to the agent and auditing are complementary. Without granting an exit option to the agent, no auditing is optimal, and the principal grants an exit option to conduct a sincere audit, which in turn mitigates the agent's misreporting incentive. Our analysis also reveals that, when the cost of auditing is sufficiently large, the principal conducts more sincere audits with a smaller amount of penalty.     

Regulation and Coordination of International Environmental Externalities with Incomplete Information and Costly Public Funds

In this article, we study cross-border externalities in a game played by two principal-agent pairs with adverse selection. Each firm/agent is located in one country and generates pollution by producing complementary or substitute goods, sold on a common market. A fraction of pollution is transferred from one country to another. Each regulator/principal is imperfectly informed about the marginal cost of his domestic firm and accordingly uses secret incentive contracts with costly public funds. We show the necessity of cooperation between competing regulators to effectively internalize all the damages caused to the environment, while reaching the first best. If the level of uncertainty is sufficiently low, we obtain an infinity of noncooperative Bayesian differentiable equilibria, which may necessitate competing regulators to coordinate on an equilibrium. Such coordination constitutes an incentive for competing regulators to cooperate. Our major result states that under some circumstances asymmetric information relaxes the transborder externality problem. Indeed, we show that, when there is a major transfer of pollution and firms' marginal costs are sufficiently high, competing regulators are better off under uncertainty. Therefore, asymmetry of information can have the very consequence of generating regulation that is too strict from the domestic viewpoint but that improves social efficiency when the benefits to both countries are taken into account.     

MARKET‐BASED INCENTIVES

In this article, we study market‐induced, external incentives similar to career concerns jointly with standard, contractual incentives linking compensation to performance. We consider a dynamic principal–agent problem in which the agent's outside option is determined endogenously in a competitive labor market. In equilibrium, strong performance increases the agent's market value. When this value becomes sufficiently high, the threat of the agent quitting forces the principal to increase the agent's compensation. The prospect of obtaining this raise gives the agent an incentive to exert effort, which reduces the need for standard incentives. In fact, whenever the agent's option to quit is sufficiently close to being “in the money,” the market‐induced incentive eliminates the need for standard incentives altogether: Compensation becomes completely insensitive to current performance.     

Resource‐driven victory

The vast popularity of distributive policies in many resource‐rich countries coincided with the oil and gas price hike of 2004. However, following the sharp decline of price in the late 2014, this popularity started waning and the tendency toward more productive policies gained traction. Using a theoretical model, this paper studies the optimal composition of public spending and demonstrates that, for a sufficiently low amount of any exogenous revenue, for example, resource revenue, investing revenue in productive public good is preferable. The representative agent prefers more distributive policies as resource revenue increases. A key determinant of the optimal composition of public spending is the inherited level of productivity. Countries with too low or too high productivity both find distributive policies more appealing even for a small amount of resource revenue. Yet, they have an essential difference. Resource revenue eradicates individuals' incentive to work in countries with low initial productivity while individuals always prefer to work in highly productive countries.     

Non‐Governmental Public Norm Enforcement in Large Societies as a Two‐Stage Game of Voluntary Public Good Provision

In small groups, norm enforcement is achieved through mutual punishment and reward. In large societies, norms are enforced by specialists such as government officials. However, not every public cause is overseen by states, for instance those organized at the international level. This paper shows how nongovernmental norm enforcement can emerge as a decentralized equilibrium. As a first stage, individuals voluntarily contribute to a nongovernmental agency that produces an incentive system. The second stage is the provision of a public good on the basis of private contributions. The incentive system increases contributions by means of public approval or disapproval of behavior. It is shown that, even in large populations, nongovernmental norm enforcement can be supported in a noncooperative equilibrium of utility‐maximizing individuals. This result is in sharp contrast to those obtained in the standard situation of voluntary provision of an intrinsic public good which—without altruism or related motives—is eroded by free‐riding. Reliance on altruistic behavior is not required in supplying the second‐order public good “norm enforcement” in large societies.     

Optimal democratic mechanisms for taxation and public good provision

We study the interdependence of optimal tax and expenditure policies. An optimal policy requires that information on preferences is made available. We first study this problem from a general mechanism design perspective and show that efficiency is possible only if the individuals who decide on public good provision face an own incentive scheme that differs from the tax system. We then study democratic mechanisms with the property that tax payers vote over public goods. Under such a mechanism, efficiency cannot be reached and welfare from public good provision declines as the inequality between rich and poor individuals increases.     

Rewards from public office and the selection of politicians by parties

We investigate the relationship between the quality of politicians, defined in terms of their competence (skills), and rewards from public office in a game between parties and citizens in which parties play a crucial role in the selection of politicians. Parties shape the selection of politicians by manipulating information about the quality of their candidates. An increase in the rewards from public offices leads to two opposing effects on the average quality of politicians. The first is a selection effect, whereby more skilled citizens enter politics, leading to an increase in average quality. The second is a manipulation effect, as parties have the incentive to further manipulate information to increase the probability of election for their unskilled candidates, from whom they can extract higher rents in the form of service duties. We find that the second effect dominates when (i) parties’ costs of manipulating information are sufficiently low; (ii) even in the absence of manipulation, the quality of information available to citizens about candidates is sufficiently poor; and (iii) the net gains from becoming a politician for unskilled citizens are sufficiently larger than those for skilled citizens. These findings provide a rationale for the ambiguous sign of the empirical relationship between the quality and pay of politicians.     

Coordination and the Provision of Discrete Public Goods by Correlated Equilibria

The strategic analysis of the private provision of a discrete public good has shown the existence of multiple Nash equilibria with the efficient number of players voluntarily contributing. However the coordination issue is left unexplained by this literature. The experimental evidence shows that communication among players is helpful in achieving cooperation. We claim that, from the theoretical point of view, this is equivalent to playing correlated equilibria in an extended public good game with communication, modeled as Chicken. We characterize such equilibria as feasible coordination mechanisms to achieve public goods provision in the general contribution game. We further introduce a second kind of game characterized by payoff externalities that may persist after the minimal threshold of contributors is achieved. While it is easy to show the existence of Pareto efficient correlated equilibria in the first game, in the second one players face incentive problems such that a first best cannot always be an equilibrium. Nevertheless there exist correlated equilibria that can qualify as incentive efficient mechanisms, once free riding is seen as a moral hazard issue. Finally, with an example, we discuss the impact of coalition formation in our framework.     

公共部门组织激励存在的问题:西方理论和中国证据

公共部门组织激励是一个非常重要而又困难的问题,近年的研究揭示出公职人员外在激励的有效性天生就不高.原因在于:一是由于激励具有财政约束性,导致政治代理人追求权力最大化,其经济行为效率就低.二是由于委托人目标具有难定性和代理人产出具有难量性,使得可合约性很差,代理人的经济行为缺乏明确的合约条款约束,其道德风险大大增加.上述问题在中国的表现就是地方官员的经济竞争缺乏效率,从中我们也可看出官员内在激励的重要性.     

Playing monopoly in the creek: Imperfect competition, development, and in-stream flows

Land ownership and control of development in new and frontier cities is often concentrated. Local public goods, such as wetlands and riparian habitats, can be adversely affected by development. Regulatory pressure to protect these local public goods may not emerge until after some development has occurred. When development rights are insecure, an incentive exists to accelerate early development, an incentive that increases with the number of firms. Further, multiple equilibria may exist, which can result in large increases in development for small increases in the number of firms. When firms are uncertain about how the regulator values the local public good, development may be further accelerated and there may be even more equilibria.     

Free riders and the optimal prize in public‐good funding lotteries

We prove the existence and uniqueness of an equilibrium in a game where players, whose preferences exhibit constant absolute risk aversion or constant relative risk aversion, contribute to a public good via lottery‐ticket purchases. Contrasting models with risk neutrality, we show that an equilibrium with a strictly positive amount of the public good may not exist without a sufficient number of participants who are not too risk‐averse. We show that players who are more risk‐averse purchase fewer lottery tickets and are more likely to free ride in equilibrium. In fact, it is possible for free riders to place a larger value on the public good than do those who contribute. In a symmetric equilibrium, we show that an upper bound exists for the amount of the public good, even though there are infinitely many participants. Furthermore, we derive a lottery prize that maximizes the amount of the public good in a symmetric equilibrium and find that such a prize always results in an overprovision of the public good.     

Focusing effect and the poverty trap

I build a dynamic consumption-savings model in which agents׳ choices are distorted by the focusing effect: agents overweight the utility of goods in which their options differ more. I show that the consumption-savings choice depends both on the marginal return on savings and on the total return on savings, implying that the incentive to save may increase with the initial level of wealth. As a consequence, a salience-based poverty trap may exist when the marginal return on savings is sufficiently high and sufficiently flat. I also consider the case of a perfect credit market and show that a poverty trap may emerge when the salience of consumption is bounded above. I discuss policy implications. In particular, imposing upon an agent a punishment for decreasing savings below a threshold leads to a higher level of savings, even when the threshold triggering the punishment is not binding     

公共项目代建人激励制度设计

公共项目代建制面临在现有制度安排下进一步改善其制度效率的重要课题,而基于项目治理的代建人激励容易在政府业主部门和代建人之间形成代理型治理问题,即治理机制激励不足。鉴于此,通过文献分析理清了代建人激励制度的多维度治理机制构成,构建了各维度治理因子测量量表,并通过因子分析对该量表的维度结构进行验证,初步形成了代建人激励制度的多维度概念模型,在此基础上,利用相关分析讨论了概念模型中各维度关键治理因子之间的关联性,依据关联性所形成的作用效应设计了相应的代建人激励制度方案。研究结果表明,在项目治理视角下,代建人激励制度包括多维度关键治理因子,且各维度治理因子之间存在耦合作用,能够更有效地激励代建人的积极履约行为。研究结论将为政府业主部门构建更为综合、高效的代建人激励制度提供理论依据。     

Local public goods, inter-regional transfers and private information

Suppose that the centre wishes to make transfers between member states of a federation to reduce inequality. However, it lacks precise information concerning the cost differences that are responsible for the initial income inequality. We examine the implications of asymmetric information for the design of the transfer scheme. We show that if member states’ inherent cost levels as local public good providers take discrete values, the first best, or ‘complete information’, transfer scheme may or may not violate incentive compatibility. If inherent cost is a continuous random variable, such a scheme certainly violates incentive compatibility. We also explore the possibility of binding participation constraints. In our model, a binding incentive compatibility constraint leads to a reduction in effort devoted to cost reduction, and a binding participation constraint will also lead to a violation of Samuelson's optimality condition for public good provision.     

Climate Change Mitigation with Technology Spillovers

We explore the implications of an increase in clean technology spillovers between developed and developing countries. We build a game of abatements in which players are linked with technology spillovers determined by an initial choice of absorptive capacities by developing countries. We show that, within a non-cooperative framework, the response of clean technology investments in developed countries to an increase in cross-country technology spillovers is ambiguous. If the marginal benefits of these additional abatements are not sufficiently high, developed countries have a strategic incentive to decrease investments. Such a strategic response jeopardizes the initial effects of an increase in technology spillovers on climate change mitigation and decreases the incentives for developing countries to enhance their absorptive capacities.     

TECHNOLOGY TRANSFERS FOR CLIMATE CHANGE

This article considers the transfer of cost‐reducing technology in the context of contributions to climate protection. We analyze a two‐period public goods model where later contributions can be based on better information, but delaying the mitigation effort is costly because of irreversible damages. Investments in technology affect the countries' timing of contributing. We show that countries have an incentive to provide cost‐reducing technology as this can lead to an earlier contribution of other countries and can therefore reduce a country's burden of contributing to the public good. Our results provide a rationale for the support of technology sharing initiatives.     

基于声誉理论的研发外包动态激励机制研究

基于声誉理论,本文建立了企业研发外包的动态激励机制模型,研究了承包方在同一个契约里长期激励与短期激励相结合的激励模式,得出了实现声誉有效激励的条件和提高声誉激励效应的途径。研究结果表明:考虑声誉机制时,承包方在第1期、第2期的努力水平比不考虑声誉机制时提高了,承包方从第1期、第2期产出里分享的剩余份额比不考虑声誉机制时提高了。因此,与没有引入声誉机制的契约模型相比,声誉激励机制和显性激励机制相结合的最优动态契约模型可以实现帕累托改进、提高激励强度,并能起到很好的约束作用。     

Renewable resource regulation and uncertain prices: The role of financial structure and bankruptcy

We analyze the interaction between regulatory policies and the financial structure of a fishery and show that firms with debts may respond differently to regulations than firms that have not accumulated debts. There are conditions where more stringent regulation is counterproductive, providing a perverse incentive to increase harvesting effort. We show that optimal regulation depends on the sector's financial structure, and demonstrate that there are cases when intervention is counterproductive, or too costly to implement. There are also cases where successful regulatory intervention can only be implemented when accompanied by a sufficiently large subsidy.