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Why People Buy Insurance: A Modern Answer to an Old Question 人们为什么要买保险:一个古老问题的现代答案
Pub Date : 2019-03-14 DOI: 10.2139/ssrn.3352604
Markus Fels
In this essay, I revisit the question of which motive underlies insurance demand. I draw on the literature of state-dependent utility and on the literature of imperfectly divisible consumption to argue that the general purpose of insurance is not a risk transfer, but meeting a conditional need. I discuss how this understanding of insurance extends the traditional view of insurance and I show how this extension has implications for our discipline’s research agenda and policy advice.
在这篇文章中,我重新审视了保险需求背后的动机。我利用国家依赖效用的文献和不完全可分消费的文献来论证保险的一般目的不是风险转移,而是满足有条件的需求。我讨论了这种对保险的理解如何扩展了传统的保险观点,并展示了这种扩展如何对我们学科的研究议程和政策建议产生影响。
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引用次数: 3
A Dynamic Model of Systemic Bank Runs 系统性银行挤兑的动态模型
Pub Date : 2019-03-01 DOI: 10.2139/ssrn.3375547
Xuewen Liu
This paper develops a tractable dynamic model to study bank runs in a financial system, featuring the linkage between bank runs and asset market prices. The model speaks to the evolution of a systemic crisis. In our model economy, there are many banks and they share a common asset market. The interim liquidation value of a bank is endogenous and depends on its asset fundamentals, on the status of other banks and hence the aggregate fire sales in the system, and on the endogenous path-dependent market liquidity condition. We analytically characterize the dynamics of the interplay between market liquidity and bank runs. Our model shows runs-illiquidity traps with two steady-state equilibria and a crisis process consisting of an initial gradual decline followed by a sudden sharp crash in the transitional dynamics. Our theory explains empirical facts and gives new policy implications.
本文建立了一个可处理的动态模型来研究金融体系中的银行挤兑,该模型具有银行挤兑与资产市场价格之间的联系。该模型说明了系统性危机的演变。在我们的模型经济中,有许多银行,它们共享一个共同的资产市场。一家银行的临时清算价值是内生的,取决于其资产基本面、其他银行的地位以及系统中的总贱卖,以及内生路径依赖的市场流动性状况。我们分析了市场流动性和银行挤兑之间相互作用的动态特征。我们的模型显示了具有两个稳态均衡的运行-非流动性陷阱和一个危机过程,该过程由过渡动态中最初的逐渐下降和随后的突然急剧崩溃组成。我们的理论解释了经验事实,并给出了新的政策启示。
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引用次数: 5
What Do We Know About Annuitization Decisions? 关于年金化决策我们知道些什么?
Maria Alexandrova, Nadine Gatzert
Against the background of aging societies and increasing life expectancies, the protection of individuals from outliving their savings has become increasingly relevant. Annuities represent insurance against longevity risk and can prevent old‐age poverty. The aim of this article is to present the current state of theoretical, empirical and experimental evidence with regard to annuitization decisions. Toward this end, we conduct a systematic literature review that includes 89 articles. Based on this, we study welfare effects of mandatory annuitization, annuitization rates and the optimal fraction of wealth to be annuitized, as well as determinants of retirees’ choice to annuitize and their impact on annuity demand. Finally, we present possible solutions for overcoming the low uptake of annuities based on its causes. One main result is that behavioral biases in annuitization decisions particularly require considerably more theoretical research and empirical evidence, and that theoretical models already appear to well explain empirically observed annuitization rates.
在老龄化社会和预期寿命增加的背景下,保护个人免于超出其储蓄寿命已变得越来越重要。年金是针对长寿风险的保险,可以防止老年贫困。这篇文章的目的是呈现关于年金化决策的理论、经验和实验证据的现状。为此,我们进行了系统的文献综述,包括89篇文章。在此基础上,本文研究了强制性年金化的福利效应、年金化费率和最优财富比例,以及退休人员年金化选择的决定因素及其对年金需求的影响。最后,我们根据原因提出了克服年金低吸收的可能解决方案。一个主要的结果是,在年金化决策中的行为偏差特别需要更多的理论研究和经验证据,而理论模型似乎已经很好地解释了经验观察到的年金化率。
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引用次数: 15
Three Different Ways Synchronization Can Cause Contagion in Financial Markets 同步在金融市场引发传染的三种不同方式
Pub Date : 2019-02-27 DOI: 10.2139/ssrn.3343761
N. Massad, J. Vitting Andersen
We introduce tools to capture the dynamics of three different pathways, in which the synchronization of human decision-making could lead to turbulent periods and contagion phenomena in financial markets. The first pathway is caused when stock market indices, seen as a set of coupled integrate-and-fire oscillators, synchronize in frequency. The integrate-and-fire dynamics happens due to “change blindness”, a trait in human decision-making where people have the tendency to ignore small changes, but take action when a large change happens. The second pathway happens due to feedback mechanisms between market performance and the use of certain (decoupled) trading strategies. The third pathway occurs through the effects of communication and its impact on human decision-making. A model is introduced in which financial market performance has an impact on decision-making through communication between people. Conversely, the sentiment created via communication has an impact on financial market performance. The methodologies used are: agent based modeling, models of integrate-and-fire oscillators, and communication models of human decision-making.
我们引入工具来捕捉三种不同路径的动态,其中人类决策的同步可能导致金融市场的动荡时期和传染现象。第一种途径是由股市指数(被视为一组耦合的“积分+火”振荡器)在频率上同步引起的。“变化盲目性”是人类决策过程中的一种特征,人们倾向于忽略小的变化,但在大的变化发生时采取行动。第二种途径是由于市场表现和使用某些(解耦)交易策略之间的反馈机制而发生的。第三种途径是通过沟通的影响及其对人类决策的影响而发生的。引入了金融市场绩效通过人与人之间的沟通对决策产生影响的模型。相反,通过沟通产生的情绪会影响金融市场的表现。所使用的方法是:基于代理的建模,集成和发射振荡器模型,以及人类决策的通信模型。
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引用次数: 2
Budget-Constrained Optimal Insurance with Belief Heterogeneity 具有信念异质性的预算约束最优保险
Pub Date : 2019-02-06 DOI: 10.2139/ssrn.3230312
Mario Ghossoub
Abstract We re-examine the problem of budget-constrained demand for insurance indemnification when the insured and the insurer disagree about the likelihoods associated with the realizations of the insurable loss. For ease of comparison with the classical literature, we adopt the original setting of Arrow (1971), but allow for divergence in beliefs between the insurer and the insured; and in particular for singularity between these beliefs, that is, disagreement about zero-probability events. We do not impose the no sabotage condition on admissible indemnities. Instead, we impose a state-verification cost that the insurer can incur in order to verify the loss severity, which rules out ex post moral hazard issues that could otherwise arise from possible misreporting of the loss by the insured. Under a mild consistency requirement between these beliefs that is weaker than the Monotone Likelihood Ratio (MLR) condition, we characterize the optimal indemnity and show that it has a simple two-part structure: full insurance on an event to which the insurer assigns zero probability, and a variable deductible on the complement of this event, which depends on the state of the world through a likelihood ratio. The latter is obtained from a Lebesgue decomposition of the insured’s belief with respect to the insurer’s belief.
摘要本文重新研究了当被保险人和保险人对可保损失实现的可能性不一致时,保险赔偿的预算约束需求问题。为了便于与经典文献进行比较,我们采用Arrow(1971)的原始设置,但允许保险人和被保险人之间的信仰分歧;特别是对于这些信念之间的奇点,也就是对零概率事件的不一致。我们不会对可接受的赔偿施加无破坏的条件。相反,我们强加了一种保险公司可以承担的国家验证成本,以验证损失的严重性,这排除了事后道德风险问题,否则可能会因被保险人可能误报损失而产生道德风险问题。在弱于单调似然比(Monotone Likelihood Ratio, MLR)条件的这些信念之间的轻度一致性要求下,我们刻画了最优赔偿,并表明它具有简单的两部分结构:保险人对一个事件赋予零概率的全额保险,以及该事件的补上的可变免赔额,该补通过似然比取决于世界的状态。后者是由被保险人的信念相对于保险人的信念的勒贝格分解得到的。
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引用次数: 22
Bond Liquidity, Risk Taking and Corporate Innovation 债券流动性、风险承担与企业创新
Pub Date : 2019-01-25 DOI: 10.2139/ssrn.3328968
H. Dang, Ha Diep-Nguyen
PurposeThe purpose of this paper is to investigate how market liquidity condition of corporate bonds can affect firm investment policy, specifically its risk taking, via the disciplinary function of trading.Design/methodology/approachThe paper uses fixed-effects OLS and Poisson regression for the baseline specifications. It also employs the introduction of TRACE in 2002 as an exogenous shock to bond trading infrastructure in a difference-to-difference framework to address endogeneity concerns and establish causality.FindingsThe paper documents a positive relationship between bond illiquidity and firms’ risk taking, specifically a one standard deviation increase in Amihud illiquidity measure is associated with nearly 20 percent increase in exploratory investments compared to CAPEX. The shift in risk taking in turn increases firms’ innovation output to some extent.Research limitations/implicationsThe findings have important implications on firm’s risk taking and growth. The paper identifies a new channel through which firm’s choice of risk can be influenced, namely, bondholder disciplining. The study also has implications about externalities of trading beyond liquidity cost for regulators in designing market microstructure.Originality/valueThis is the first to study the disciplinary role of bond trading. Conventional wisdom holds that bondholders are passive creditors who do not engage in costly monitoring such as banks. The findings in this paper imply that this may not be the case.
本文的目的是研究公司债券的市场流动性状况如何通过交易的纪律功能影响公司的投资政策,特别是其风险承担。设计/方法/方法本文使用固定效应OLS和泊松回归作为基线规范。它还采用了2002年引入的TRACE作为在差异对差异框架下债券交易基础设施的外生冲击,以解决内生性问题并建立因果关系。研究结果表明,债券非流动性与公司风险承担之间存在正相关关系,特别是与资本支出相比,Amihud非流动性措施的一个标准差增加与探索性投资增加近20%相关。风险承担的转变反过来在一定程度上增加了企业的创新产出。研究的局限性/启示研究结果对企业的风险承担和成长具有重要的启示意义。本文确定了一个影响公司风险选择的新渠道,即债券持有人约束。该研究还为监管机构设计市场微观结构提供了流动性成本之外的交易外部性的启示。原创性/价值这是首次研究债券交易的学科作用。传统观点认为,债券持有人是被动的债权人,不会像银行那样参与成本高昂的监管。本文的研究结果表明,情况可能并非如此。
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引用次数: 3
The Effect of Implementing Professional and Intelligence Ethics Emotional on Decision Making for Auditors 实施职业道德和智力道德对审计人员决策的影响
Pub Date : 2019-01-13 DOI: 10.2139/ssrn.3314994
William Hogianto, Handy Sebastian
The auditor in making a definite decision to use more than one rational considerations, based on the implementation of ethics policies are understood and made a fair decision. In addition, education and experience may also improve them competence in decision making. This research is used to analyze the effect of the research implementation of professional ethics and emotional intelligence to the auditor making decisions.

This study stores a sample of the independent auditors who are in public accounting in Semarang and BPK-RI branches of Central Java. The types of data used are primary data by collecting data that is an indirect interview or questionnaire. The analysis tool used is multiple linear regression.

The results of this study suggest that professional ethics are measured from indepence, integrity and objectivity; general standards and accounting principles; responsibility to clients 'significant influence auditors' decision making, while the responsibility to colleagues and other responsibilities and practices have no significant effect auditors in the decision-making. Emotional intelligence as measure from the self regulation, motivation and social skills have a significant effect on the auditor's in decision making, while the self-awareness and empathy no significant effect on the auditor decision making.
注册会计师在作出明确的决定时,要运用多种理性的考虑,在理解道德政策实施的基础上,作出公平的决定。此外,教育和经验也可以提高他们的决策能力。本研究旨在分析职业道德和情绪智力的研究实施对审计师决策的影响。本研究存储了在中爪哇三宝垄和BPK-RI分支机构从事公共会计的独立审计师的样本。使用的数据类型是通过间接访谈或问卷调查收集数据的原始数据。使用的分析工具是多元线性回归。研究结果表明,职业道德从独立性、完整性和客观性三个方面来衡量;一般准则和会计原则;对客户的责任显著影响审计人员的决策,而对同事的责任和其他责任和做法对审计人员的决策没有显著影响。以自我调节、动机和社交技能为衡量标准的情绪智力对审计人员的决策有显著影响,而自我意识和共情对审计人员的决策没有显著影响。
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引用次数: 1
A New Multi-Criteria Decision Making Approach in the Evaluation of Innovative Ideas 创新理念评价中的多准则决策新方法
Pub Date : 2018-12-12 DOI: 10.2139/ssrn.3299917
Ahmet Çubukçu
Innovative ideas can be gathered from many sources through crowdsourcing and open innovation approaches since these sources have expanded considerably owing to information and communication technologies. Innovation contests are one of the main tools to gather innovative ideas from different sources by open innovation approaches. Innovations that will provide solution to the problem of enterprises may emerge by gathering hundreds or even thousands of innovative ideas through these contests. The difficult part is the stage of selection of the best innovative idea alternative(s) by evaluating these ideas. In this study, a new multi-criteria approach is offered. In this approach primarily, alternatives which take lower score from the dominant or most important acceptance criteria are eliminated. Next, Weighted Sum and TOPSIS methods are used as multi-criteria decision methods among the remaining alternatives. After that, it is implemented one more step to show whether if the variation of weighted score of acceptance criteria affect the ranking order in each method. Hereby, a decision model proposal for innovation projects has been presented to make an alternative approach that allows both fast and correct decision making. Findings show that this method could be seriously considered as an alternative approach when there are lots of alternatives to make a decision in innovation projects.
可以通过众包和开放式创新方法从许多来源收集创新想法,因为这些来源由于信息和通信技术而大大扩大。创新竞赛是通过开放式创新方法从不同来源收集创新思想的主要工具之一。通过这些竞赛,汇集数百甚至数千个创新想法,可能会出现解决企业问题的创新。困难的部分是通过评估这些想法来选择最佳创新想法替代方案的阶段。本研究提出了一种新的多准则方法。在这种方法中,从主要或最重要的接受标准中获得较低分数的替代方案被淘汰。其次,将加权和方法和TOPSIS方法作为剩余方案的多准则决策方法。之后,再执行一步,以显示接受标准加权分数的变化是否会影响每种方法的排名顺序。在此,本文提出了一种创新项目的决策模型建议,以提供一种既快速又正确的决策方法。研究结果表明,当创新项目中存在多种决策选择时,该方法可以作为一种替代方法加以认真考虑。
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引用次数: 0
A Zero Attraction Effect in Naturalistic Choice 自然选择中的零吸引效应
Pub Date : 2018-12-03 DOI: 10.2139/ssrn.3299524
Anna Trendl, Neil Stewart, Timothy L. Mullett
In the attraction effect, adding a dominated third option to a choice set of two options can reverse the preference for the original two options, and even increase one of the option’s choice share. This constitutes a violation of the axioms of regularity and independence from irrelevant alternatives, which are core properties of any choice model in which the utility of each option is stable across choice sets. Consequently, in the past 20 years, the attraction effect has driven the development of a set of influential models of multiattribute choice. However, Frederick, Lee, and Baskin (2014) have recently claimed that the attraction effect is only limited to options with numerical attributes, and does not hold for choices between naturalistic options (e.g., snacks, movies) — a claim which would severely undermine its theoretical importance. Huber, Payne, and Puto (2014) criticised Frederick et al.’s experiments, laying down a set of criteria that should be met by any experiment wishing to test for the attraction effect in real-world consumer choices. This article presents the first experiment that meets these criteria. The results show a precisely zero attraction effect.
在吸引效应中,在由两个选项组成的选择集合中加入一个劣势的第三选项,可以逆转对原两个选项的偏好,甚至增加其中一个选项的选择份额。这违反了规则性和不相关选择独立性的公理,而这些公理是任何选择模型的核心属性,其中每个选择的效用在选择集中是稳定的。因此,在过去的20年里,吸引效应推动了一套有影响的多属性选择模型的发展。然而,Frederick, Lee和Baskin(2014)最近声称,吸引力效应仅局限于具有数值属性的选项,而不适用于自然选项(例如,零食,电影)之间的选择-这种说法将严重破坏其理论重要性。Huber, Payne和Puto(2014)批评了Frederick等人的实验,他们制定了一套标准,任何希望测试现实世界消费者选择中的吸引力效应的实验都应该满足这些标准。本文提出了第一个符合这些标准的实验。结果显示了零吸引效应。
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引用次数: 6
Inside the Black-Box of Analysts’ Bounded Rationality: A Study of Contexts That Matter 在分析师有限理性的黑盒子里:对重要语境的研究
Pub Date : 2018-11-29 DOI: 10.2139/ssrn.3294232
S. Abhayawansa, M. Aleksanyan
This study seeks to advance our understanding of how analysts’ decision contexts influence the motivational, attitudinal and relational aspects of their decision-making rationality. Based on in-depth interviews with analysts, and using the lens of the bounded rationality theory, we illustrate how the real-life complexity and ambiguity of analysts’ decision-making environment bounds the resource- and capacity-constrained analysts’ decision-making to that of satisficing. Satisficing transpires in both the means (i.e. process and mechanisms) and the ends (i.e. outputs and outcome) of their decision-making. We demonstrate how each context intensifies the impact of others, and is amplified further by analysts’ information environment, which strains analysts’ cognitive load. The revelations we provide about context-driven motivational, attitudinal and relational antecedents of analysts’ decision-making behaviour lead to a more holistic and nuanced understanding of analysts’ practice.
本研究旨在促进我们对分析师决策情境如何影响其决策理性的动机、态度和关系方面的理解。基于对分析师的深度访谈,并使用有限理性理论的镜头,我们说明了现实生活中分析师决策环境的复杂性和模糊性如何将资源和能力受限的分析师的决策限制为令人满意的决策。满意度体现在决策的手段(即过程和机制)和目的(即产出和结果)两方面。我们展示了每种情境如何强化其他情境的影响,并被分析师的信息环境进一步放大,从而使分析师的认知负荷紧张。我们提供的关于分析师决策行为的情境驱动动机、态度和关系前因的启示,使我们对分析师的实践有了更全面、更细致的理解。
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引用次数: 2
期刊
ERN: Other Microeconomics: Decision-Making under Risk & Uncertainty (Topic)
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