Existence,uniqueness and some comparative statics for ratio and Lindahl equilibria

We present a rigorous, yet elementary, demonstration of the existence of a unique Lindahl equilibrium under the assumptions that characterize the standard n-player public good model. Indeed, our approach, which exploits the aggregative structure of the public good model, lends itself to a transparent geometric representation. Moreover, it can handle the more general concept of the cost share or ratio equilibrium. Finally, we indicate how it may be exploited to facilitate comparative static analysis of Lindahl and cost share equilibria.      

No-arbitrage Equilibria with Differential Information: An Existence Proof

On the example of a pure exchange financial economy with two periods incomplete nominal-asset markets and differential information of the adverse selection’s type, Cornet-De Boisdeffre (J Math Econ 38:393-410, 2002) introduced refined concepts of no-arbitrage prices and equilibria, which extended to the asymmetric information setting the classical concepts of the symmetric information literature. We now assess existence issues and extend a standard property of symmetric information models. Namely, we prove that a no-arbitrage equilibrium always exists, as long as financial markets preclude arbitrage, under the same standard conditions, whether agents have symmetric or asymmetric information.     

囚徒困境的均衡辨析

传统的 《博弈论》 分析最终结果是两个囚徒均会坦白,但这并不是两个囚徒的最好结局,如何才能达到最好结局？本文从 《博弈论》 中“理性人”的假设出发,对传统的 （坦白,坦白） 均衡提出质疑。本文指出理性人不会满足于传统的均衡,理性人会积极寻找双方利益最大化的均衡,并达到此均衡。本文给出了新的均衡：广义均衡,并给出广义均衡的求解过程。通过对引入公共支付函数的概念,公共支付函数表达了两个人的共同利益。通过公共支付函数的最大化,使两个囚徒公共利益最大化,以求得囚徒困境的新的均衡,让两个囚徒的结果达到最好———即两人均抵赖。本文还将公共支付函数运用于其他 《博弈论》 案例,并指出广义均衡比纳什均衡更具有社会意义,因为前者体现了公共利益。文中还对囚徒困境的机制设计问题做了分析,指出囚徒困境中机制的设计会诱导囚徒作出不正确的选择,从而没有达到双方利益的最大化。     

Cournot-Nash and Lindahl equilibria in pure public “bad” economies

Summary. Using a general equilibrium framework, this paper analyzes the equilibrium provision of a pure public bad commodity (for example pollution). Considering a finite economy with one desired private good and one pure public “bad” we explicitly introduce the concept of Lindahl equilibrium and the Lindahl prices into a pure public bad economy. Then, the Lindahl provision is analyzed and compared with the Cournot-Nash provision. The main results for economies with heterogeneous agents state that the asymptotic Lindahl allocation of the pure public bad is the null allocation. In contrast, the asymptotic Cournot-Nash provision of the public bad might approach infinity. Other results were obtained in concert with the broad analysis of the large finite economies with pure public bad commodities. Received: July 26, 2001; revised version: March 12, 2002 RID="*" ID="*" We are indebt to Nicholas Yannelis and anonymous referee for their valuable comments and suggestions. Correspondence to: B. Shitovitz     

Exchange rate devaluation,monetary policy and wages: A general equilibrium analysis for Chile

A range of devaluation, monetary and wage policy mixes are analysed for the Chilean economy using a 10 sector comparative static model built along neoclassical lines. The model, while focusing on the real side of the economy, also contains a simple monetary sector. Quantifying the short-run implications of each policy mix for key macroeconomic and sectoral variables enables judgements to be made about the effectiveness of each mix in reaching specified targets and their feasibility. Money wage flexibility downwards is crucial if balance of trade and employment targets are to be achieved with lower domestic inflation and a smaller nominal devaluation.     

Retailing public goods: The economics of corporate social responsibility

This paper explores the feasibility and desirability of Corporate Social Responsibility (CSR). We identify CSR with creation of public goods or curtailment of public bads. Using a model with profit-maximizing firms, the paper shows that there is a direct parallel between CSR and traditional models of private provision of public goods. Indeed, firms that use CSR will produce public goods at exactly the same level as predicted by the standard voluntary contribution equilibrium for public goods. We compare CSR with government provision and charitable provision, discussing when CSR by private for-profit firms could have a comparative advantage in dealing with public goods provision.     

House money effects in public good experiments: Comment

We reconsider evidence from experiments that claim to show that using “house money” in standard public goods experiments has no effect on behavior. We show that it does have an effect when one examines the data using appropriate statistical methods that consider individual-level responses and account for the error structure of the panel data. JEL Classification D7 · C92 I am grateful for comments from two referees and an editor. All data and statistical code are available for public access at the ExLab Digital Library located at http://exlab.bus.ucf.edu.     

Existence of Nash equilibria in finite extensive form games with imperfect recall: A counterexample

This paper provides an example showing that for finite extensive form games without perfect recall existence of Nash equilibria in behaviour strategies is not guaranteed in general.     

Fund-raising success and a solicitor's beauty capital: Do blondes raise more funds?

This study uses a door-to-door fund-raising field experiment to explore the returns to physical appearance on fund-raising success. Interestingly, blonde females earn more on average than brunette counterparts. However, the returns to physical appearance depend critically on the race of a potential donor.     

The marginal pricing rule revisited

The purpose of the paper is to introduce a tighter definition for the marginal (cost) pricing rule. By means of an example, we illustrate the improvements that one gets with the new definition with respect to the former one using Clarke’s normal cone, and we discuss its consequences in terms of the existence of equilibria.      

An economic analysis of the Cattlemen’s Beef Promotion and Research Board demand-enhancing programmes

The research reported here addressed two objectives. The first objective was to measure the overall impact of the Cattlemen’s Beef Board as well as eight-specific advertising, promotion and research activities on US beef demand. The second objective was to compute marginal benefit–cost ratios (BCRs) for the eight individual checkoff activities and for the overall programme. The results indicated that Cattlemen’s Beef Board’s Promotion activities increased total domestic beef demand by 15.7 billion pounds in total, or 2.1 billion pounds per year between 2006 and 2014. Collectively, the overall marginal BCR for all Cattlemen’s Beef Board activities was $11.20.     

Anatomy of a balance-of-payments crisis : Application of a computable general equilibrium model to Turkey, 1978–1980

This paper analyses quantitatively the causes of the foreign exchange crisis in Turkey in the late 1970s through application of a multisector computable general equilibrium (CGE) model. The model incorporates some mechanisms that simulate the actual workings of the foreign exchange market during the turbulent foreign exchange disequilibrium period 1978–1980. It features the simultaneous operation of both quantitative controls and premium rationing schemes. Factors contributing to the foreign exchange crisis are analysed through counterfactual simulations which examine the implications for the Turkish economy of use of a flexible exchange rate, no oil price shock in the 1978–1980 period, and maintaining a constant price-level deflated affective exchange rate. Our results indicate that while exchange rate policy played an important role in bringing about the foreign exchange crisis, the influence of other factors was substancial.     

How does global demand for financial services promote domestic growth in Luxembourg? A dynamic general equilibrium analysis

This paper studies the transmission of a change in the global demand for financial services on the domestic growth of an international financial center. To capture most of the possible interactions, we develop a dynamic general equilibrium model that we calibrate on Luxembourg data. Results show that the financial multiplier (ratio of a change in output to a change in the financial sector value added) is above 2 in the medium run and largely above 1 in the long run. The main transmission channels are net exports (expenditure approach) or capital income (income approach) in the medium run and investment in the long run. Moreover, the global demand for financial services has substantial implications for public finances. These findings also mean that a sudden loss of confidence towards a specific international financial center might have dramatic consequences for its whole economy.     

General equilibrium impact of an energy-saving policy in the public sector

We analyse a disregarded environmental policy instrument: a switch in government expenditure away from energy (or other natural resources) and toward a composite good which includes energy-saving expenditure. We first develop two variants of an analytical general equilibrium model. A composite good is produced with constant returns to scale, and energy is imported or produced domestically with diminishing returns, yielding a differential rent to its owners. The government purchases energy and composite goods from private firms. Such a policy unambiguously increases employment. It also raises private consumption and welfare under two conditions: (i) it is not too costly and (ii) the initial share of the resource is smaller in public spending than in private consumption, or the difference is small enough. We then run numerically a model featuring both importation and domestic production of energy (oil, gas and electricity), for the OECD as a whole. Simulations show that employment, welfare and private consumption rise. We provide magnitudes for different parameter values. Earlier versions of this paper have benefited from conference participants at the European Council for an Energy-Efficient Economy, International Society for Ecological Economics World Congress, CIRED seminar and EUREQua environmental economics seminar. We especially thank Michèle Sadoun and two anonymous referees. The usual disclaimer applies.     

交通基础设施的公共产品属性探析

交通基础设施是为满足全社会经济生活中人与物的位移需求而生产出的产品,该产品具有显著的公共需求性与公益性。以公共产品理论为基础,从非排他性和非竞争性的角度可以判定交通基础设施具有公共产品属性,通过分析交通基础设施的消费机理深入探讨交通基础设施使用过程中产生拥挤现象的原因,可以否定交通基础设施为拥挤性公共产品的观点。此外,投资主体的变化不会变更交通基础设施的公共产品性质。