VCM or PPM? A comparison of the performance of two voluntary public goods mechanisms

Little progress has been made toward understanding the relative performance of the two mechanisms most widely used for fundraising: the Voluntary Contribution (VCM) and Provision Point (PPM) mechanisms. This paper provides direct comparisons of the relative performance of variants of the VCM and PPM as they are most commonly implemented in the field. The research makes use of 1296 individual observations from 721 subjects, including 40 observations from a field experiment. A meta-analysis of the determinants of contribution levels and bootstrap estimates of the relative efficiency of the two mechanisms provide novel analyses of public goods experimental data. Overall, the PPM is found to increase total contributions, to be more responsive to changes in induced value, and to be generally more efficient than the VCM. For public goods with a benefit-cost ratio in the interval [1, 1.4), however, the VCM captures a greater portion of available benefits than the PPM.     

The Efficiency of Direct Public Involvement in Environmental Policymaking: An Experimental Test

In collaborative negotiation, stakeholder representatives are charged with the development of a mutually acceptable set of public policies. Although this approach has become popular in environmental negotiations, little is known about the characteristics of the outcomes that are reached. In this paper, we employ an Edgeworth box framework to investigate the nature of bargaining over public goods (environmental policies) that have multiple attributes. We then design and conduct laboratory experiments within this framework to test whether negotiated outcomes satisfy standard axiomatic bargaining predictions under a variety of conditions. Specifically, we test whether two parties with Pareto inefficient endowments of two goods will trade to Pareto improving and Pareto efficient outcomes, and to the Nash bargain in particular. We vary whether the Nash bargain coincides with or diverges from the outcome that maximizes the joint payoff, or the outcome that equalizes payoffs, and whether subjects are provided full or partial information. We find that bargainers reach Pareto improving and efficient outcomes across treatments, but withdraw support for the Nash bargain when it generates unequal payments or when payoff information is private. We conclude that this experimental framework offers a promising method for studying multi-attribute negotiations.     

Free‐Riding and the Provision of Public Goods in the Family: A Laboratory Experiment*

We examine the provision of family public goods using experimental economics methods. With sufficient altruism and shared resource arrangements, families can provide the efficient level of family public goods. Becker's Rotten Kid Theorem asserts that transfers from altruistic parents will induce children to maximize family income even if children are not altruistic toward other family members. Consistent with altruism, parents and children contributed more to a public good when in groups with family members than when in groups with strangers. In contrast to the predictions of the Rotten Kid Theorem, however, children's behavior fell short of maximizing family income.     

Behavioral Mechanism Design

This paper studies the mechanism design problem for the class of Bayesian environments where agents do care for the well‐being of others. For these environments, we fully characterize interim efficient (IE) mechanisms and examine their properties. This set of mechanisms is compelling, since IE mechanisms are the best in the sense that there is no other mechanism which generates unanimous improvement. For public good environments, we show that these mechanisms produce public goods closer to the efficient level of production as the degree of altruism in the preferences increases. For private good environments, we show that altruistic agents trade more often than selfish agents.     

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.     

Direct democracy and local government efficiency

This paper studies the role of direct democracy in ensuring efficient and cost-effective provision of goods and services in the public sector. The sample consists of the population of municipalities in the German State of Bavaria, where in the mid-1990s considerable direct democratic reforms granted citizens wide opportunities to directly participate in local affairs through binding initiatives. Using information on the municipal resources and the municipal provision of public goods, and applying a fully non-parametric approach to estimate local government overall efficiency, the analysis shows that more direct democratic activity is associated with higher government efficiency. This result suggests that more inclusive governance through direct decision-making mechanisms may induce more accountable and less inefficient governments.     

Pricing and signaling with frictions

We study a market where each seller chooses the quality and price of goods and the number of selling sites. Observing sellers? choices of prices and sites, but not quality, buyers choose which site to visit. A seller?s choices of prices can direct buyers? search and signal quality. A unique equilibrium exists and is separating. When the quality differential is large, the equilibrium implements the efficient allocation with public information. Otherwise, the quality of goods and/or the number of sites created is inefficient, due to a conflict between the search-directing and signaling roles of prices.     

Product Safety Provision and Consumers' Information

Economic mechanisms related to the provision of product safety are explored, with particular attention paid to the structure of consumers' information. The case of perfect information, of experience goods (for which consumers detect product safety after consumption) and of credence goods (where consumers cannot link a disease to a particular product consumed in the past) are explored. Imperfect competition is assumed in the supply sector. In the case of both perfect information and experience goods, market equilibrium is characterised by a less-than-socially optimal provision of safety, when the safety effort is costly. With credence goods, imperfect information leads to the absence of safety effort and to a market closure. Different types of public regulation aiming at increasing consumer protection and circumventing market failures are explored. Particular attention is paid to minimum safety standards, labels and liability enforcement. The relative efficiency of these instruments depends on the information structure. In the cases of perfect information and experience goods, a minimum safety standard can be an efficient instrument. Regulation is necessary but not sufficient to avoid market failure in the case of credence goods.     

The effects of costless pre-play communication: Experimental evidence from games with Pareto-ranked equilibria

Cheap talk is shown to facilitate coordination on the unique efficient equilibrium in experimental order-statistic games. This result is roughly consistent with theoretical predictions according to which cheap talk promotes efficient Nash play. The evidence concerning the mechanisms that theory appeals to is mixed: Frequent agreement of messages and actions is consistent with messages being viewed as self-committing. Risk in the underlying game and the absence of self-signaling messages may explain why message profiles are not unanimous. Time-varying message profiles can be interpreted as evidence for players trying to negotiate equilibria and/or trying to rely on secret handshakes.     

The benefits of voluntary leadership in experimental public goods games

We study the effects of voluntary leadership in experimental public goods games when each group member can volunteer to contribute before the other members. We find that voluntary leadership increases contributions significantly, compared to a treatment where leadership is enforced exogenously.     

Public Good Mix in a Federation with Incomplete Information

We analyze a model of resource allocation in a federal system in which the center transfers real resources between member states. The center is assumed to be unable to observe the precise value of the cost differences across jurisdictions that motivate the transfers. Moreover, the center cannot observe the output levels of the individual local public goods provided by the jurisdictions, but must condition its transfers on a coarse aggregate of expenditures on public goods. We find that when the jurisdiction with private information realizes a high unit cost, it is generally worthwhile for the center to allow it a level of expenditure on public goods that differs from the "first best" level. However, whether that level is higher or lower than its first best level depends on the magnitudes of demand parameters for the local public good.     

西部开发中的地方公共品有效供给分析

本文从地方公共品的性质和供给特点出发 ,分析了地方公共品有效供给的帕累托条件。在此基础上指出 ,西部开发中地方公共品有效供给不足主要表现为地方公共品供给总量不足、供给结构不合理及中央政府和地方政府对地方公共品的供求管理错位 ,主要的改进措施是扩大西部地方公共品投资力度、优化供给结构 ,并建立规范的中央财政转移支付制度、健全西部地方公共品管理体制。     

Multinational public goods provision under multilateral income transfers and productivity differences

This article examines multinational public goods provision under multilateral income transfers and productivity differences across countries. Under a planner who uses linear approximation for utility maximization, we show that (1) a country is an income receiver if it has a higher productivity than the average in producing public goods, enabling it to provide more public goods; (2) the amount of transfers can be pinned down for all countries with an adjustment cost; (3) each country obtains an identical utility increment; and (4) the country with the lowest adjustment cost is the best candidate for the planner country. All results are derived based on well-known information regarding the cost of producing the public goods and income levels.     

机制设计理论综述

机制的新理解和激励相容概念使得机制设计框架得以确立,显示原理极大简化了分析框架。公共品经济难以有效权衡配置效率、自愿参与和激励相容。公共品提供的占优策略均衡机制,在拟线性环境和一般性经济环境下分别导致帕累托严格无效和独裁。在贝叶斯环境下,对于公共品经济和私人品经济,帕累托效率与自愿参与均难以兼容。其中,公共品不兼容性在极限角度仍成立。纳什执行及其拓展试图使在所设机制下的所有均衡结果对于社会选择目标而言都最优。放松关于信息结构和理性的假定,理论的最新发展围绕信息结构内生化、机制稳健化以及计算机制设计问题展开。     

Parallelism in the Lab and the Field: Testing Robustness of the Minimum‐Contributing‐Set Mechanism

Efforts to "test" public‐goods provision mechanisms in field settings encounter a fundamental obstacle: investigators cannot determine whether the aggregate valuation of the public good exceeds the cost. Experimental laboratory settings can fix the provision of the public good to be efficient. This allows investigation of the performance of the mechanism under potential field settings. This paper reports the results of a set of laboratory experiments designed to test the robustness of the minimum‐contributing‐set (MCS) mechanism to field conditions. The reported results support further use and investigation of the MCS mechanism for the provision of step‐level public goods.     

Coups,revolutions and efficient policies in autocracies

The purpose of this paper is to explore the interaction of two mechanisms that might constrain the power of dictators: the threat of a coup by the selectorate and a revolution by citizens. Our results help explain a stylized fact, namely that autocracies are far more likely to be either the best or the worst performers in terms of growth and public goods policies. To this end, we focus on accountability within dictatorships using a model where both the selectorate and the citizens are the principals and the autocrat is the agent. Our results highlight that both excessively strong and excessively weak dictators lead to poor economic performances, and that a balanced distribution of de facto political power is required to incentivize the dictator to choose efficient economic policies.     

Public goods, merit goods, and the relation between private and government consumption

In this paper, we investigate the relation between public and private consumption, by constructing a general government spending data set, by function, for 12 European countries. In particular, we split government consumption into two categories. The first category—“public goods”—includes defence, public order, and justice. The second category—“merit goods”—includes health, education, and other services that could have been provided privately. Equations from a relatively general permanent income model are estimated by GMM. The estimates are fairly robust in showing that public goods substitute while merit goods complement private consumption. However, the relation between merit goods and private goods turns out to be stronger than that between public goods and private goods. Thus, in the aggregate government and private consumption are complements.     

Toward an efficiency rationale for the public provision of private goods

Public provision of a private goods is justified on efficiency grounds in a model with no redistributive preferences. A government’s involvement in the provision of a private good generates information about preferences that facilitates more efficient revenue extraction for the provision of public goods. Public provision of the private good improves economic efficiency under a condition that is always fulfilled under independence and satisfied for an open set of joint distributions. The efficiency gains require that consumers cannot arbitrage the publicly provided private good, so our analysis applies to private goods where it is easy to keep track of the ultimate user, such as schooling and health care, but not to easily tradable consumer goods.     

Foreign aid and weakest-link international public goods: An experimental study

In this paper, we investigate efficiency differences between income and in-kind transfers as distribution mechanisms of foreign aid to weakest-link international public goods in a laboratory environment. We find that if there is relatively small difference in country size, then income transfers seem to provide a higher provision of the international public good, and thus higher overall welfare level than that of in-kind transfers. However, if there is a large disparity in country size, then in-kind transfers appear to provide a higher level of IPG provision and higher accompanying global welfare.     

Participation constraints of matching mechanisms

Matching mechanisms have been proposed to improve public good provision in voluntary contributions. However, such decentralized subsidizing mechanisms may not be Pareto‐improving and may suffer from incomplete information and incredible commitment. This paper examines participation constraints of matching mechanisms with small matching rates in two cases of equilibria. At interior equilibria, there always exist small Pareto‐improving matching schemes regardless of preferences. This universal existence is useful for cooperation among heterogeneous players in the context without global information of preferences or at the international level without central governments. At corner equilibria, matching schemes work in different ways and have distinct welfare effects in certain cases, and the existence of Pareto‐improving matching schemes is not universal but is possible under certain conditions. The paper further characterizes Pareto‐improving matching schemes, and shows that it is easier to reach Pareto‐improving matching outcomes if players value more on public goods and have stronger substitution between private and public goods.