Game-theoretic properties of Final-Offer Arbitration

Final-Offer Arbitration (FOA) is a dispute settlement procedure in which an arbitrator chooses one side's final position as the resolution. Game-theoretic models of FOA in two-sided interest disputes are reviewed, especially models of the disputants' final offer choices under uncertainty about the arbitrator's preferences. The extent to which the Brams-Merrill Theorem (1986) reveals optimal strategic behavior under FOA, and the implications for efficiency and equity, are assessed. Analysis of a model not satisfying the hypotheses of the Theorem suggests that, for some arbitrators, FOA can have an undesirable tendency. Another game model is used to address the question of how disputants' differential risk-aversion is reflected in their strategic behavior, and in the fairness of FOA outcomes. This calculation clarifies some apparently contradictory empirical evidence about FOA.     

DEALING WITH UNCERTAINTY: ROBUST RULES IN MONETARY POLICY

We argue that in seeking to insure against model uncertainty, monetary policy makers are often ready to trade ex post performance for greater certainty in the outcome. They thus look for rules that although not optimal ex post, have certain properties that qualify them as robust. We apply first, Gul's approach of ‘disappointment’ aversion to describe policy makers' aversion to uncertainty and then define the properties the notion of ‘robustness’ entails. With these two tools we then link the desirability of such robust rules to the degree of policy makers' aversion to uncertainty. We thus show that provided such robust rules exist, a larger degree of disappointment aversion leads to a greater emphasis on robustness in policy implementation.     

资本市场的实验经济学方法论研究

随着金融市场理论研究和实践检验的不断发展，资本市场的许多基础理论受到了极大的挑战，与现有理论相悖的异象不断涌现。新近兴起的实验经济学为人们研究资本市场提供了一条更为有效的途径。本文分析了实验方法在资本市场研究中的利与弊，介绍了部分资本市场实验的设计过程，并应用该方法分析了风险与收益、资本市场的效率、市场泡沫的产生和破灭、CAPM理论，以及交易制度等。文章指出，在资本市场中运用实验方法进行研究，具有可控性、可比性以及可重复性等优点，为我们对于资本市场诸多理论进行检验提供了可能。在资本市场实验的设计中，我们不但需要考虑实验的各种交易制度，还需要考虑到被试人员的选择、交易资产的确定以及市场信息的设计等很多问题，只有对这些问题进行全面地考虑，才能保证实验结果的可信度，进而为我们对于各种金融理论的检验提供可能。     

人们关注的是分配动机还是分配结果?——最后通牒实验视角下两种公平观的考察

本文通过设计一组最后通牒实验考察了分配动机的公平和分配结果的公平对人的行为决策的影响,并分别从浙江和北京两地获取了相关实验数据。采用角色随机分配的简化最后通牒实验,通过提议者不同可选分配方案向响应者发送的信号,考察对提议者的"动机是否公平"从而响应者是否有相应的不同拒绝率。实验结果表明,响应者对提议者"分配动机的公平"有显著不同的反应,说明基于动机的互惠偏好确实在人们的行为决策中扮演重要角色。同时本文通过一组修正型的最后通牒实验从分配结果公平的角度考察了其影响机制,发现分别在保证博弈实验中38%的被试拒绝行为,以及免惩罚博弈中89%的被试拒绝行为,不能被差异厌恶偏好理论进行解释。本文实验的结果在于说明分配动机的公平比分配结果的公平更会影响人们的决策行为,其暗含的政策含义即分配过程的公平比分配结果的公平更为重要。     

Multivariate risk aversion and uninsurable risks: Theory and applications

The objective of this paper is to develop conditions for global multivariate comparative risk aversion in the presence of uninsurable, or background, risks, and thus generalize Kihlstrom and Mirman [1974] and Karni [1979,1989]. We analyze von Neumann-Morgenstern (VNM) utility functionsas well as smooth preference functionals which are nonlinear in distribution but locally linear in probabilities. In each case we provide an economic application which illustrates how our theorems can be used. We analyze a risk sharing, a portfolio choice, and a labor supply problem for VNM utility functions, and the optimal allocation of effort to risky technologies in the presence of a random supply (or quality) of a public good for nonlinear preference functionals. We consider thecase where the random variables are mean-independent as well as the case where they are independent. In the labor supply application for VNM utility functions, we show that if the two risks are independent, the comparative statics effect of greater risk aversion on labor supply in the presence of a background non-wage income risk is determined by a monotonic relationship between labor supply and the wage rate under certainty. That is, we extend the applicability of the Diamond-Stiglitz [1974]-Kihlstrom-Mirman [1974]single-crossing property to the case where an independent background risk is present.     

基于后悔厌恶心理因素的投资者行为分析

基于后悔厌恶的心理因素,投资者会表现出持亏卖盈的行为偏好。本文利用中国个体投资者交易账户的交易数据对中国股票市场个体投资者“处置效应”进行了实证分析,并考察了中国股票市场是否存在“十二月效应”对“处置效应”的影响。本文研究表明,中国个体投资者存在显著的“处置效应”,并在十二月份存在“反处置效应”现象。     

Saving under uncertainty: A bivariate non-expected utility approach

We adopt the multivariate non-expected utility approach proposed by Yaari [1986] to provide a characterization of the comparative statics effects of greater risk aversion and of mean-preserving increases in risk on saving and borrowing in the presence of income and interest rate risk.We show that in Yaari's model, it is possible to extend the applicability of the Diamond and Stiglitz [1974] and Kihlstrom and Mirman [1974] (DSKM) single-crossing property to establish a relationship between greater risk aversion and saving (or borrowing) on the basis of the individual's ordinal preferences as long as the two risks are independent. We also demonstrate that the comparative statics effects of a joint mean-preserving increase in random income and interest rate on saving and borrowing can be determined by an extension of the DSKM single-crossing property.     

业务外包分阶段风险因素识别与风险规避研究

依据决策过程理论,将业务外包划分为业务规划与选择、合同形成与签订、合同执行、外包结果评价四大阶段,并研究得出业务外包各阶段风险影响因素。基于四阶段决策过程,建立包含自律、合作和评判三大机制的分阶段风险规避模型,探讨涵括业务外包四阶段的全过程风险规避方法、步骤、措施、对策等。并从风险应对输入、风险应对控制及风险应对输出3个方面探讨了业务外包开发分阶段风险应对模型,为业务外包分阶段风险控制体系提供了重要补充。     

Firm-Level Determinants of the Financing Decisions of Small and Medium Enterprises: Evidence from Argentina

This article studies the determinants of the financing decisions of small and medium enterprises (SMEs), which we characterize through three cases: trade-off behavior, pecking order, and extreme aversion to debt. We test our hypotheses using a dataset of firms from Bahía Blanca (Argentina) for two years: 2006 and 2010. We find that firm characteristics related to information asymmetries, such as firm age, size, and legal form; and personal factors, such as owner’s age and education; and perception of emotional bankruptcy costs, are relevant variables in SME financing behavior. The recognition of extreme aversion to debt motivates reconsideration of the underleverage problem of SMEs.     

信任的测度

信任在人类社会关系中扮演着重要的角色,被认为是合作秩序的基石、社会维系正常运行的润滑剂。本文讨论了两种信任测度方法的区别及其一致性问题,讨论了信任行为背后的个体偏好——主要包括涉他偏好和背叛规避偏好的分解与测度问题,最后介绍了浙江大学跨学科社会科学研究中心（ICSS）针对中国被试所做的信任测度实验及结论。