A competitive equilibrium for a warm-glow economy

The warm-glow model (Andreoni in J Political Econ 97:1447–1458, 1989; Econ J 100:464–477, 1990) of public goods provision has received widespread interest, yet surprisingly most attention has focused on the voluntary contribution equilibrium of the model, and only very little attention has been devoted to the competitive equilibrium. In this paper, we introduce the concept of competitive equilibrium for a warm-glow economy (henceforth, warm-glow equilibrium) and establish both existence and welfare properties. The warm-glow equilibrium concept may prove to be very useful to the normative and positive theory of public goods provision. First, it is a price-based mechanism achieving efficient outcomes. Second, not only could the warm-glow equilibria outcomes serve as a point of reference to measure free-riding and welfare loss but also, as suggested by Bernheim and Rangel (Behavioral Economics and Its Applications, 2007), in large economies they may be approximated by Walrasian equilibria outcomes.     

Provision Point Mechanisms and Field Validity Tests of Contingent Valuation

Past field validity tests of contingent valuation have relied on voluntary contribution mechanisms to elicit actual willingness to pay, and may overestimate hypothetical bias because of free riding in the actual contributions. This paper argues that provision point mechanisms are a preferred alternative for field validity tests of contingent valuation because they increase the proportion of demand revealed in cases in which public goods can be provided in a step function. The results of a contingent valuation validity study of participation in a green electricity pricing program that uses a provision point mechanism are reported, and hypothetical open-ended and dichotomous choice responses are compared to actual participation. Calibration of hypothetical responses is also explored.     

A Supply and Demand Exposition of a Constitutional Tax Loophole: The Case of Tariff Symmetry

The U.S. Constitution permits import tariffs but bans export duties. Yet import taxes are de facto export taxes, just as export taxes are de facto import taxes. Access to this symmetry proposition has been limited by its illustration being in daunting analytics largely restricted to international economics. This is unfortunate. Tariff symmetry exposes a tax loophole of constitutional proportions, a case where economics trumps the intentions of America's Founding Fathers. Moreover, tariff revenue was the U.S. government's pivotal revenue source from 1789 until the 1913 constitutional sanctioning of the income tax. Because U.S. exports were heavily agricultural, tariff symmetry implies that federal taxation had an export dimension with disparate economic and regional consequences. By making tariff symmetry more accessible, this paper lowers the cost of examining important issues.     

Social network and private provision of public goods

Using a simple model with interdependent utilities, we study how social networks influence individual voluntary contributions to the provision of a public good. Departing from the standard model of public good provision, we assume that an agent’s utility has two terms: (a) ‘ego’-utility derived from the agent’s consumption of public and private goods, and (b) a social utility which is the sum of utility spillovers from other agents with whom the agent has social relationships. We establish conditions for the existence of a unique interior Nash equilibrium and describe the equilibrium in terms of network characteristics. We show that social network always has a positive effect on the provision of the public good. We also find that, in networks with “small world”-like modular structures, ‘bridging’ ties connecting distant parts of social network play an important role inducing an agent’s contribution to public good. Assumptions and results of the model are discussed in relation to the role of social capital in community-level development projects and to the effect of innovation networks on firms’ R&D investments.     

Strength of the Social Dilemma in a Public Goods Experiment: An Exploration of the Error Hypothesis

We present the results of an experiment on voluntary contributions to a public good with a unique dominant strategy equilibrium in the interior of the strategy space. The treatment variable is the equilibrium contribution level. By increasing the equilibrium contribution level, we reduce the strength of the social dilemma. Though we observe that the average level of contribution rises with the equilibrium contribution level, the average rate of over-contribution is not affected in a systematic way. Over-contribution is statistically significant only at the lower level of equilibrium contribution but not at the higher levels. We show that the Anderson et al. (1998, Journal of Public Economics. 70, 297–323) logit equilibrium model which combines altruism and decision errors fits quite well our laboratory data.     

The behavioral response to voluntary provision of an environmental public good: Evidence from residential electricity demand

This paper develops a theory of voluntary provision of a public good in which a household's decision to engage in a form of environmentally friendly behavior is based on the desire to offset another behavior that is environmentally harmful. The model generates predictions about (1) participation in a green-electricity program at the extensive and intensive margins, and (2) changes in electricity consumption in response to participation. We test the theory using billing data for participants and nonparticipants in a green-electricity program in Memphis, Tennessee. High-consumption households are more likely to participate, and they participate at higher levels. In terms of a behavioral response, households participating above the minimum threshold level do not change electricity consumption, but those participating at the minimum threshold increase electricity consumption 2.5 percent after enrolling in the program. The result is based on identification strategies that exploit before–after differences between participants and nonparticipants, and differences in the timing of enrollment among participants only. Despite the increase in electricity demand upon the purchase of green electricity for the households with a “buy-in” mentality, the net effect for the buy-in households is a reduction in pollution emissions, as the behavioral response is not large enough to offset the environmental benefit of the green-electricity purchase.     

Improving Voluntary Public Good Provision Through a Non-governmental,Endogenous Matching Mechanism: Experimental Evidence

Social norms can help to foster cooperation and to overcome the free-rider problem in the private provision of public goods. This paper focuses on the endogenous establishment of an average-oriented norm which sanctions deviations from average public good contributions. In a laboratory experiment, we analyse whether subjects are willing to implement a punishment and reward scheme at their own expense by applying the theory of non-governmental norm enforcement put forward by Buchholz et al. (J Public Econ Theory 16(6):899–916, 2014). Based on their theory, which omits a central authority but introduces an endogenously determined enforcement mechanism, we implement a two-stage public good game. In the first stage, subjects determine the strength of the sanctioning mechanism on their own. In the second stage, they decide on their personal contributions to the public good based on the established mechanism. In line with comparable pool punishment experiments, we find that subjects are apparently willing to contribute funds in order to establish a norm enforcement mechanism. Groups over-invest in the mechanism, but this over-investment decreases over time. These investments seem to be driven by the subjects’ previous individual contributions and partly by a number of strategic considerations, i.e. the previous average contribution made to the public good lowers the investment in the sanctioning mechanism. In the second stage of our experiment, higher norm enforcement parameters tend to lead to higher public good contributions. The earnings with the mechanism are on average higher than without.     

On the redistributive effects of Germany’s feed-in tariff

This article assesses the redistributive effects of a key element of German climate policy, the promotion of renewables in the electricity generation mix through the provision of a feed-in tariff. The tariff shapes the distribution of households’ disposable incomes by charging a levy that is proportional to household electricity consumption and by transferring financial resources to households who are feeding green electricity into the public grid. Our study builds on representative household survey data, providing information on various socio-demographics, household electricity consumption, and ownership of photovoltaic facilities. The redistributive effects of the feed-in tariff are evaluated by means of inequality indices. All the indices indicate that Germany’s feed-in tariff is regressive.     

Linear Public Goods Experiments: A Meta-Analysis

Objective: To use meta-analysis techniques to assess the impact of various factors on the extent of cooperation in standard linear public goods experiments using the voluntary contributions mechanism. Data Sources: Potentially relevant experiments were identified through searches of EconLit, the Internet Documents in Economics Access Service (IDEAS), and a survey article. Review Methods: A total of 349 potentially relevant studies were identified. Of these, 27 (representing a total of 711 groups of participants) met the inclusion criteria. Data were abstracted from these studies using a standardized protocol. Results were analyzed using weighted ordinary least squares. Average group efficiency was the dependent variable. Results: The marginal per capita return, communication, constant group composition over the session (partners), positive framing, and the use of children as subjects had a positive and significant effect (p < 0.05) on the average level of contribution to the public good. Heterogeneous endowments to subjects, experienced participants, and soliciting subjects' beliefs regarding other participants' behaviour prior to the start of the session/period had a negative and significant effect. A number of other factors were not identified as significant. Conclusion: The meta-analysis results parallel several key findings from previous literature reviews. In addition, they offer parameter estimates and an analysis of significance based on the totality of the available research evidence. More consistent reporting of the results of experiments would greatly improve the ability to conduct this type of research.     

Voluntary Participation and Spite in Public Good Provision Experiments: An International Comparison

This paper studies voluntary public good provision in the laboratory, in a cross-cultural experiment conducted in the United States and Japan. Our environment differs from the standard voluntary contribution mechanism because subjects first decide whether or not to participate in providing this non-excludable public good. This participation decision is conveyed to the other subject prior to the subjects' contribution decisions. We find that only the American data are consistent with the evolutionary-stable-strategy Nash equilibrium predictions, and that behavior is significantly different across countries. Japanese subjects are more likely to act spitefully in the early periods of the experiment, even though our design changes subject pairings each period so that no two subjects ever interact twice. Surprisingly, this spiteful behavior eventually leads to more efficient public good contributions for Japanese subjects than for American subjects.     

Environmental Funds,Public Abatement,and Welfare

This paper addresses some features of environmental funds that the government uses to finance public abatement with pollution tax revenue or tariff revenue. I find that when the pollution tax rate and the tariff rate are jointly chosen optimally, then the optimal pollution tax rate is higher than the Pigouvian tax rate under public abatement financed by tariff revenue, and lower when public abatement is financed by pollution tax revenue. Furthermore, I show that the optimal tariff rate is positive regardless of which tax revenue is used to finance public abatement. These results are relevant for countries where the government seeks revenues earmarked for the financing of environmental funds.     

公共品供给的实验研究 及其未来可能的进展

传统经济学基于理性“经济人”基础,认为公地悲剧问题是个体理性选择的必然结果,公共品供给需采取与个体真实公共品偏好相兼容的激励机制,并由政府承担供给角色。实验经济学研究则提供个体异质社会偏好的稳健性证据,并在合适的惩罚、沟通交流和声誉等机制下提供诸多可以实现公共品自愿供给的实验证据,表明群体或自愿组织也可作为公共品供给主体。这些公共品实验研究为现实公共治理创新提供更为科学的偏好基础和公共治理思路。     

Who pays taxes? Liturgies and the <Emphasis Type="Italic">Antidosis</Emphasis> procedure in Ancient Athens

Ancient Athens developed a constitutional democracy. A core, time invariant political economy problem is that of providing public services when wealth is imperfectly know. I model theoretically a unique institution developed in Ancient Athens known as the Antidosis. It allowed a citizen on the list of tax-payers to challenge a citizen not contributing to replace him and make the public goods contribution. The challenged citizen, rather than allow the claim to go before a jury trial, could choose to swap wealth with the accusing tax payer. I argue this acts as a screening mechanism and improves upon the asymmetric information problem the government has in identifying who is indeed those who have the highest wealth to provide the tax revenue to finance the public services.     

The appeal of voluntary environmental programs: which firms participate and why?

Why do firms participate in the EPA's voluntary environmental programs? Possible reasons include: (1) to appeal to consumers who demand ‘green’ products; (2) to preempt government regulation; (3) to seek regulatory relief from the agency; and (4) to gain a competitive advantage over competitors. This article examines the determinants of participation in voluntary environmental programs, focusing on testing hypotheses 1 and 3. To test 2, a different approach is used than in previous literature. The focus is on a specified universe of firms (manufacturing firms in the Standard & Poor 500), and their participation in each of three EPA voluntary programs (33/50, Green Lights, and WasteWi$) referring to differently regulated pollutants is analyzed. Our empirical analyses reveal that (1) publicity is an important component of participation; (2) the worse the environmental track record of the firm, the more likely the firm is to participate, but only in programs directly related to highly regulated pollutants; and (3) firms that scrutinize their environmental performance more carefully are wary of newer programs with uncertain reach of the public and uncertain benefits. Firms appear to value the information/technology transfer aspect of joining a program.     

Heterogeneous Agents in Public Goods Experiments

We explore by purely experimental means a heterogeneous agents scenario in experimental public goods games, assuming the existence of at least three types of player: free riders, cooperators, and reciprocators. We identify the various types by means of four classification methods, and then play the public goods game with homogeneous groups. We observe that (eq1) the average contribution level is enhanced in this setting; (2) the decay phenomenon is replicated in groups of pure free riders, whereas in groups of cooperative and reciprocating players the contribution is high and fairly stable throughout the game.The experiments reported in this paper were financed by the Cognitive Science Laboratory and the Computational and Experimental Economics Laboratory of the University of Trento. We would like to thank Marco Tecilla, Macrina Marchesin and Dino Parisi for their help in running the experiments, and Luigi Mittone, director of CEEL, for letting us use the laboratorys resources. Paul Webley, Robert Moir, seminar participants at the Universities of Pisa and Trento, Charles Holt and two anonymous referees provided very useful comments on a previous draft.     

The Austrian income tax tariff, 1955–2006

Using official statistics and tax laws, we outline and discuss the evolution of the personal income tax in Austria since the beginning of the Second Republic in 1955. Focusing on the tax tariff and its progressivity properties, we identify a period of high (and increasing) progressivity before 1989, followed by a period of diminished progressivity since 1989. While still being a powerful revenue instrument, the Austrian income tax seems to have lost both redistributive impact and political allure.

When Does One Bad Apple Spoil the Barrel? An Evolutionary Analysis of Collective Action

This paper studies collective-action games in which the production of a public good requires teamwork. A leading example is a threshold game in which provision requires the voluntary participation of m out of n players. Quantal-response strategy revisions allow play to move between equilibria in which a team successfully provides, and an equilibrium in which the collective action fails. A full characterization of long-run play reveals the determinants of success; these include the correlation between players' costs of provision and their valuations for the good. The addition of an extra "bad apple" player can "spoil the barrel" by destabilizing successful teams and so offers a rationale for limiting the pool of possible contributors.     

The Environmental Supply of Farm Households: A Flexible Willingness to Accept Model

The purpose of the paper is toanalyse farmers' participation inenvironmental schemes, which are gaining agrowing importance within the Europeanagricultural policy. These schemes areimplemented through voluntary contracts thatpay farmers for the provision of environmentalservices. The microeconomic model that isdeveloped is a farm household model thatincorporates the producer and consumerbehaviour of the farmer to optimise hisenvironmental supply considering that theenvironmental service that he is supplying alsohas the characteristics of a public good. Defined as the difference between the profitloss in providing the environmental service andthe willingness to pay to consume this service,the household's willingness to accept (WTA)is compared with two flexible WTA measures thataccount for the technological flexibility ofthe environmental supply. Data come from asurvey of an agri-environmental schemeimplemented in the Walloon region of Belgiumsince 1995 and intended to protect the nestingof some endangered bird species. Econometricresults show that contingent valuation is areliable method to reveal the behaviours offarmers facing the invitation to participate inthis scheme. They also confirm that farmerbehaviour is also influenced by environmental preference.     

A Real Options Approach to Abatement Investments and Green Goodwill

In this paper we adopt the green goodwill argument as to why firms voluntarily invest in abatement capital. We investigate the effects on the abatement investment decision of changes in uncertainty about future green goodwill, competitor abatement investments, regulations, etc., using a real options framework. Our results indicate that increased uncertainty about consumers' willingness to pay for green products in the future discourage voluntary abatement investments. The model also suggests that voluntary abatement investments are promoted by an increased threat of regulation and competitor abatement investments. Furthermore, the benefit-cost ratio of the abatement investment project, at the point where it is optimal to invest, is independent of what regulatory regime (stringent or lenient) the firm operates in. We also conclude that despite the fact that voluntary abatement investment exists, there may still be room for environmental policy.     

Property Rights and Efficiency of Voluntary Bargaining under Asymmetric Information

We show that in public good problems under asymmetric information, the success of voluntary bargaining is closely related to the structure of property rights. We characterize property rights structures and mediated bargaining procedures that either lead to an efficient voluntary resolution to public good problems, or achieve the efficient outcome but slightly coerce the agents into participation. In this respect, we identify "efficient" property rights structures.