Social connectedness improves co-ordination on individually costly,efficient outcomes

We study the impact of social ties on behavior in two types of asymmetric coordination games. Social ties are varied by making players interact with partners from different in-groups (fellow members of their own sports team, members of their sports club, students of their university). Subjective social ties are further measured by direct questionnaires. We find that smaller and more salient in-groups lead to significantly more group beneficial choices. The same effect is observed for players that report high values of their subjective social ties. We discuss the implication of these results for theories assuming that socially tied individuals follow some group beneficial reasoning.     

How much versus who: which social norms information is more effective?

We conduct an experiment to investigate how different types of information about social norms affect individuals’ stated contributions to a specific pro-environment program, a student ‘green fee’, in the context of a referendum. Compared to students that receive no information about peer contributions, on average, students that receive information about the dollar value range of contributions at peer institutions contribute less while students that learn about the high percentage of students voting ‘yes’ on green fee programs at peer institutions contribute more. The results are economically significant as the absolute values of both effects represent approximately 25% of average contributions. These results suggest that information about participation rates can be more effective than information about dollar amounts in encouraging contributions to environmental initiatives. Of interest to stated preference researchers, we find that results do not change when controlling for self-selection into survey completion.     

Heterogeneity and the Voluntary Provision of Public Goods

We investigate the effects of heterogeneity and incomplete information on aggregate contributions to a public good using the voluntary contribution mechanism. The non-linear laboratory environment has three-person groups as partners under varying conditions of information and communication. Bergstrom, Blum and Varian predict that increasing heterogeneity will have no effect on aggregate contributions in a no-communication environment. Ledyard conjectures a positive effect of incomplete information, a negative effect of heterogeneity, and a positive interaction of heterogeneity and incomplete information. We find that incomplete information has a small but significant negative effect. Heterogeneity has a positive effect on aggregate contributions, but its effects interact unexpectedly with communication. In a no-communication environment, heterogeneity in two dimensions (endowment and preferences) increases contributions substantially while heterogeneity in a single dimension (endowment or preferences) has little effect. In the communication environment we find the reverse. We also find a positive interaction between heterogeneity and incomplete information. Thus we reject the Bergstrom, Blume and Varian invariance result and provide mixed evidence on Ledyard's conjectures.     

Dissertation abstract: Contribution to a public good - Theoretical analysis and experimental evidence

The work undertook is located between Public Economic Theory and Experimental Economics. The object of the thesis consists in analysing the aggregate behavior and the individual heterogeneity in a voluntary contribution game. The thesis defended here is that overcontribution in comparison to the Nash equilibrium of the game, can not be explained neither by judgement errors, nor by the information on the individual behaviour of the members in a one given group. The level of contribution observed remains nevertheless inferior to the one simulated using the E.W.A. learning model. The dissertation is composed of three parts and six chapters. The first chapter expresses the various theoretical mechanisms of production of a public good, while the second one presents an overview of the experimental literature using voluntary contribution mechanisms. The second part carries on the introduction of an interior solution in a public good game in order to distinguish an explanation of overcontribution in terms of mistakes or strategies. While chapter three presents the most important works in literature that use an interior solution, the fourth chapter constitutes a personal contribution consisting in an experiment with an interior optimum. Our main result is that individuals contribute a constant part of their social optimum and that overcontribution is not explained by error. We test then the simple learning model R.L. using the observed data on the aggregate level. This model predicts well the observed behaviour. The third part is composed of two experiments where the environment of players is modified. We introduce in chapter five promises as cheap talk and find that they increase contributions at the aggregate level. In chapter six, various conditions of information on individual contributions are tested. The parameter tested is the level of information on “neighbours” contributions given to players. One of the treatments presents full information about individual contributions of the members of the group, while this information is incomplete in the other treatments. Our results show that information has no effect on the level of contribution. We simulate then the EWA learning model both at the aggregate and the individual levels and compare the simulated data to the experimental one. These simulations predict a level of contribution that is higher that the one observed in the experiment. JEL Classification C91, C92, H41 Dissertation Committee: Alan Kirman (Ph.D. Advisor), Université d’Aix-Marseille III Marie-Claire Villeval (Chair), GATE, Lyon, France Jordi Brandts, Universitat Autonoma Barcelona, Spain Charles Noussair, Emory University, Alanta, GA, U.S.A. Sylvie Thoron, GREQAM & Université du Var, France Marc Willinger, Université de Montpellier I, France     

Paretian dictators: constraining choice in a voluntary contribution game

We explore individuals’ preferences over limiting the choice sets of others in an environment with externalities. Specifically, we conduct public goods games in which participants can mandate the contributions of others or restrict choices to a subset of feasible contributions levels. We find that, relative to a baseline treatment in which individuals make choices from the set of all contribution alternatives, allowing individuals to constrain the choices of others results in more efficient outcomes. We discuss these results in light of the literature on behavioral theories of reciprocity and conditional cooperation and in regards to the literature on pre-constitutional design, political institutions, and social choice.     

Whose property is it anyway? The social nature of economic actors and egalitarian remuneration ∗

This article formulates an egalitarian theory of property based on an ethic of remuneration for economic contributions. The principle of egalitarian remuneration is developed by revising basic notions of economic contributions. Economic contributions are found to be those activities that contribute to the value of commodities not just those that produce a product. Consumers, and not only producers, contribute to the creation of value, and these economic contributions make consumers eligible for remuneration. However, the concept of consumer contributions needs to be recast, for consumer contributions do not consist of neoclassical, individualistic actors maximizing subjective preferences. Rather, consumers economic contributions flow from their socially self-determined attributes as formed through relation to the system of economic actors. Indirect social contributions spread responsibility throughout the members of the system, affecting calculations of dueness. Other members indirect contributions are relatively equal in degree of responsibility for the social formation of the consumer's economic contributions. The dispersion and equalization of responsibility for the creation of economic contributions entails a correlative equalization of claims to remuneration, on a principle of dueness for economic contributions. This implies a property right to egalitarian remuneration.     

Private Benefits,Warm Glow,and Reputation in the Free and Open Source Software Production Model

A great deal of production and consumption behavior takes place in the context of social organizations that seem to fall outside of the traditional paradigm of profit/utility maximization. These organizations are voluntary in nature and rely on contributions from members to achieve their objectives. Examples include the Linux operating system and other FOSS projects, political movements, churches and religious groups, Habitat for Humanity, and similar charitable organizations. In this paper, we consider a world containing agents with heterogeneous abilities who may voluntarily choose to make effort contributions to one or more different public projects. Agents are motivated by a desire to be seen as significant contributors to important and valuable projects, the warm glow from the act of contributing, and a desire to directly enjoy the benefits of projects when complete. We find that contributions from others can be either strategic complements or substitutes. We show that Nash equilibria exist and study how agents’ abilities and project quality affect the equilibrium levels of contributions.     

The effect of religion on Muslims’ charitable contributions to members of a non‐Muslim majority

We investigate the effects of religion on charitable contributions of Muslims who are in a minority to non‐Muslims who are in a majority and to fellow Muslims. We find that religious thinking leads to significantly more charitable giving by 10%. The effect of religious thinking is dependent on the ethnic identity of the recipient. We find a significant effect on giving behavior toward relatively more privileged out‐group members (Han Chinese), but a small and generally insignificant effect toward in‐group members (fellow Muslims). With religious thinking, prosocial behavior toward out‐group members is significantly higher by 14%, which is mainly explained by the religiosity of Muslims. Our results have implications for our understanding of the influence of Islamic rules on Muslims’ attitudes and behavior toward non‐Muslims and for the design of fundraising mechanisms in Muslim communities.     

The Carrot vs. the Stick in Work Team Motivation

This paper reports on the use of carrot (positive) and stick (negative) incentives as methods of increasing effort among members of work teams. We study teams of four members in a laboratory environment in which giving effort towards the team goal is simulated by eliciting voluntary contributions towards the provision of a public good. We test the efficiency-improving properties of four distinct environments: monetary prizes given to high contributors versus monetary fines assessed to low contributors, where high/low contributor is defined first in terms of absolute contributions and then in terms of contributions relative to abilities—which we call handicapping. Our results show that both carrot and stick can increase efficiency (i.e., contributions) levels by 10–28%. We find that handicapped incentives promise the highest efficiency levels, and when handicapping is not used penalties may be more effective than prizes. The implications for work teams and suggestions for practical implementation are discussed.     

Do interest groups reward politicians for their votes in the legislature? Evidence from the great recession

ABSTRACT

Interest groups lobby politicians in various ways to influence their policy decisions, especially, their voting decisions in the legislature. Most, if not all, of the studies on this issue examine ”pre-vote” lobbying activities of interest groups that occur before politicians vote in the legislature. In this paper, however, I examine ”post-vote” lobbying activities of interest groups that occur after politicians vote in the legislature. By using data on the amount of monetary contributions given by interest groups to the members of the U.S. House of Representatives who have served in the 109th (2005–06) through 111th (2009–10) Congress, I find evidence that voting in favour of the Emergency Economic Stabilization Act (EESA) of 2008, one of the most significant pieces of legislation and possibly the biggest government bailout in U.S. economic history, has increased the amount of monetary contributions that politicians receive from the interest groups in the financial sector after the passage of the EESA. I also discuss two reasons for such post-vote lobbying and find empirical evidence for one of them.     

Discrimination via Exclusion: An Experiment on Group Identity and Club Goods

We study using laboratory experiments the impact on cooperation of allowing individuals to invest in group‐specific, excludable public goods. We find that allowing different social groups to voluntarily contribute to such goods increases total contributions. However, a significant proportion of that contribution goes toward the group‐specific club good rather than the public good, even when the latter has higher financial returns to cooperation. We find significant evidence of in‐group biases, which are manifested by positive in‐group reciprocity. That is, club goods allow subjects to display their preferences for interaction with their in‐group members, as well as positive in‐group reciprocity.     

Transparency and cooperation in repeated dilemma games: a meta study

We use data from experiments on finitely repeated dilemma games with fixed matching to investigate the effect of different types of information on cooperation. The data come from 71 studies using the voluntary contributions paradigm, covering 122 data points, and from 18 studies on decision-making in oligopoly, covering another 50 data points. We find similar effects in the two sets of experimental games. We find that transparency about what everyone in a group earns reduces contributions to the public good, as well as the degree of collusion in oligopoly markets. In contrast, transparency about choices tends to lead to an increase in contributions and collusion, although the size of this effect varies somewhat between the two settings. Our results are potentially useful for policy making, because they provide guidance on the type of information to target in order to stimulate or limit cooperation.     

An Application of the English Clock Market Mechanism to Public Goods Games

This paper reports an experimental study of the public goods game in which contributions are not submitted all at once but incrementally as coordinated in real time by a clock. Individuals press a button as soon as the clock equals their willingness to contribute. By providing information about the point at which subjects stop further contributions we find evidence for conditionally cooperative behaviour: A subject's decision to stop contributing induces an immediate reaction of the other group members.     

The impact of downward social information on contribution decisions

In this paper we study the effect of downward social information in contribution decisions to fund public goods. We describe the results of a field experiment run in conjunction with the fundraising campaigns of a public radio station. Renewing members are presented with social information (information about another donor’s contribution) which is either above or below their previous (last year’s) contribution. We find that respondents change their contribution in the direction of the social information; increasing their contribution when the social information is above their previous contribution, and decreasing their contribution when the social information is below. We hypothesize about the psychological motivations that may cause the results and test these hypotheses by comparing the relative size of the upward and downward shifts. These results improve our understanding of cooperation in public good provision and suggest differential costs and benefits to fundraisers in providing social information.      

Giving little by little: Dynamic voluntary contribution games

Charitable contributions are frequently made over time. Donors are free to contribute whenever they wish and as often as they want, and are frequently updated on the level of contributions by others. A dynamic structure enables donors to condition their contribution on that of others, and, as Schelling [Schelling, Thomas C., The Strategy of Conflict Cambridge, MA: Harvard University Press, 1960.] suggested, it may establish trust thereby increasing charitable giving. Marx and Matthews [Marx, Leslie, and Steven Matthews, “A Dynamic Voluntary Contribution to a Public Project,” Review of Economic Studies, 67, 2000, 327-358.] build on Schelling's insight and show that multiple contribution rounds may secure a provision level that cannot be achieved in the static, one-shot setting, but only if there is a discrete, positive payoff jump upon completion of the project. We examine these two hypotheses experimentally using static and dynamic public good games. We find that contributions are indeed higher in the dynamic than in the static game. However, in contrast to the predictions, the increase in contributions in the dynamic game does not depend critically on the existence of a completion benefit jump or on whether players can condition their decisions on the behavior of other members of their group.     

THE IMPORTANCE OF COMMITTEE ASSIGNMENT: HEALTH CARE INDUSTRY POLITICAL ACTION COMMITTEE CONTRIBUTIONS AND THE HOUSE OF REPRESENTATIVES

This paper examines the relationship between political action committee (PAC) contributions from four sectors of the health care industry and committee membership in the House of Representatives over three election cycles, 1998–2002. The hypothesis tested is that members of the House who serve on committees with oversight responsibility for the health care industry are more likely to receive contributions from health care industry PACs than members of the House who do not serve on these committees. We find mixed support for the hypothesis. (JEL D72, HI0, I10)     

Woodsy the optimal owl: Environmental campaigns, norms, and implications for public goods policy

Norms regarding private provision of a public good (e.g. cutting down on energy use, not littering) can affect the marginal gains from contributing to a public good and therefore people's decisions about contributing to the public good. A model is proposed in which norms of private contributions to a public good can be influenced by public policy, and these norms affect people's self-image, which derives from a comparison of one's own contribution with the norm contribution. In this context, we examine the conditions under which private contributions to a public good are efficient, and the conditions under which policy affecting these norms improves social welfare. We find that (1) a benevolent social planner who fails to account for private provision norms will underprovide the public good, and (2) public policy that attempts to raise the norm contribution of private provision can increase social welfare if the effect of raising the norm does not have an extreme negative effect - either extremely small or extremely large - on peoples' self-image.     

Earnings, Schooling and Social Capital of Cooperative Managers

Abstract ** : This paper estimates a human capital model for co‐operative managers and compares the results with the social capital model, based on a questionnaire distributed in Portugal in 2003. The study disentangles the relative contributions of the two competing theories of earnings: the human capital and social capital theories, as applied to co‐operative managers. We conclude that co‐operative managers' earnings are a function of both theories. Policy implications are derived .     

Convergence Analysis of the Structure of Social Protection Financing

Expenditure on social protection in the European Union (EU) member states has been increasing rapidly over the last decade. To cover the increasing expenses, the countries need to find ways to increase revenues. Social protection financing systems and structure of financing vary across countries, but all of them use mainly two sources for financing: general government contributions and social tax revenue. The aim of this paper is to study the development of the structure of social protection financing at the main contributor level over the last decade, defining the trends that characterize the changes. We concentrate on convergence analysis of the structure of social protection financing, which is an important but, so far, insufficiently studied issue.This paper was presented at the 57th IAES Conference in Lisbon, March 10–14, 2004. The authors would like to thank the discussants in that session for their helpful suggestions. This paper was prepared with the support of the Estonian Science Foundation research grant. We wish to thank Reet Maldre for the assistance