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Heterodox Economics, Social Ontology, and the Use of Mathematics 非正统经济学、社会本体论和数学的应用
Pub Date : 2015-03-06 DOI: 10.2139/ssrn.2574725
M. Setterfield
In a recent article (Lawson, 2013), Tony Lawson argues for a Veblenian interpretation of the term “neoclassical”, according to which a neoclassical economist is one whose methodology is at odds with their ontological presuppositions. This leads him to categorize many heterodox economists as neoclassical on the basis that their use of mathematical modeling is at odds with their (implicit) acceptance of an open-systems ontology. The reason is that, according to Lawson, mathematical modeling is deductivist: it presupposes that social systems are closed. The argument advanced in this paper is that this last claim is true only some of the time, and problematic only some of the time that it is true. It therefore amounts to a defense of mathematical modeling by heterodox economists that is, at the same time, sympathetic to Lawson’s claims that the social realm is structured but open and that this ontology is (implicitly) accepted by many heterodox economists.
在最近的一篇文章(Lawson, 2013)中,托尼·劳森(Tony Lawson)主张对“新古典主义”一词进行Veblenian解释,根据该解释,新古典主义经济学家的方法论与其本体论前提不一致。这导致他将许多非正统经济学家归类为新古典主义,因为他们对数学建模的使用与他们(隐含的)对开放系统本体论的接受不一致。根据劳森的说法,原因在于数学建模是演绎主义的:它以社会系统是封闭的为前提。本文提出的论点是,最后一个说法只有在某些时候是正确的,只有在某些时候是正确的才有问题。因此,这相当于非正统经济学家对数学模型的辩护,同时也赞同劳森的主张,即社会领域是结构化的,但是开放的,这种本体论(隐含地)被许多非正统经济学家所接受。
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引用次数: 4
Keynes on Probability and Decision: Evidence from the Correspondence with Hugh Townshend 凯恩斯论概率与决策:来自与休·汤森通信的证据
Pub Date : 2015-02-15 DOI: 10.2139/ssrn.2612951
C. Zappia
In the literature on his philosophical ideas the correspondence Keynes had with Hugh Townshend over the just-published "General Theory" has attracted significant attention. Excerpts from the exchange have been used as a relevant piece of evidence by scholars who claim that Keynes came to reject rational decision criteria, thus focusing on the necessity for economic agents to form expectations on market sentiment, rather than fundamentals. This note concentrates instead on the whole correspondence and tries to show that a comprehensive reading of the exchange between Keynes and Townshend, unfolding through the years 1936-1938, suggests that its discussion thread was more technical than usually understood. It is argued that the correspondence provides evidence for the fact that Keynes still had a keen interest in a problem left unsolved in the "Treatise on Probability", namely, the definition of an alternative to what he termed «normal ethical theory» in the "Treatise" and identified with «strict mathematical calculation» in the "General Theory". The correspondence reveals that the issue of whether a useful decision rule can be devised under uncertainty still appears central in Keynes’s thought in 1938.
在有关凯恩斯哲学思想的文献中,他与休·汤森德(Hugh Townshend)就刚刚出版的《通论》(General Theory)进行的通信引起了极大的关注。一些学者将这段对话摘录作为相关证据,他们声称,凯恩斯摒弃了理性的决策标准,因此专注于经济主体根据市场情绪而非基本面形成预期的必要性。这篇笔记集中于整个通信,并试图表明,全面阅读凯恩斯和汤森之间的交流,从1936年至1938年展开,表明其讨论思路比通常理解的更技术性。有人认为,这些通信提供了证据,证明凯恩斯仍然对《概率论》中未解决的问题有浓厚的兴趣,即他在《概率论》中称之为“正常伦理理论”的替代定义,并在《通论》中确定为“严格的数学计算”。这些通信表明,在不确定性下能否设计出有用的决策规则,这一问题仍然是凯恩斯1938年思想的核心。
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引用次数: 10
Optimal Aggregate Consumption for Economic Growth 经济增长的最优总消费
Pub Date : 2015-01-01 DOI: 10.2139/ssrn.2544193
Wilson N. Sy
The Keynesian intuition that increasing consumption can stimulate investment is verified empirically using US macroeconomic data. The investment multiplier is hypothesized to increase monotonically with the propensity to consume. However, the functional relationship is not that of the Keynesian multiplier, as assumed axiomatically but incorrectly, in standard Keynesian economics. By modelling the investment multiplier as a power function of the consumption propensity, with empirically estimated parameters, we show that there exists an optimal level of aggregate consumption which maximizes national economic growth by balancing aggregate demand and supply in a dynamic equilibrium. For the US economy, the optimal aggregate consumption is estimated to be about 88 percent of the gross domestic product (GDP) over the data period. With the US aggregate consumption propensity already well past the optimal level in recent decades, US government policies to stimulate more consumption to increase economic growth have been counter-productive for several decades.
凯恩斯主义关于增加消费可以刺激投资的直觉,通过美国宏观经济数据得到了实证验证。假设投资乘数随消费倾向单调增加。然而,这种函数关系并不是凯恩斯乘数的关系,正如标准凯恩斯经济学中公理化但不正确的假设那样。通过将投资乘数建模为消费倾向的幂函数,利用经验估计的参数,我们表明存在一个最优的总消费水平,通过平衡总需求和总供给达到动态均衡,使国民经济增长最大化。对于美国经济而言,在数据期内,最优总消费估计约为国内生产总值(GDP)的88%。近几十年来,美国的总消费倾向已经远远超过了最佳水平,几十年来,美国政府刺激更多消费以促进经济增长的政策一直适得其反。
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引用次数: 3
Econometrics as a Pluralistic Scientific Tool for Economic Planning: On Lawrence R. Klein's Econometrics 计量经济学作为经济计划的多元科学工具——论劳伦斯·克莱因的计量经济学
Pub Date : 2014-10-30 DOI: 10.2139/ssrn.2832406
Erich Pinzón-Fuchs
Lawrence R. Klein (1920-2013) played a major role in the construction and in the further dissemination of econometrics from the 1940s. Considered as one of the main developers and practitioners of macroeconometrics, Klein's influence is reflected in his application of econometric modelling " to the analysis of economic fluctuations and economic policies " for which he was awarded the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel in 1980. The purpose of this paper is to give an account of Klein's image of econometrics focusing on his early period as an econometrician (1944-1950), and more specifically on his period as a Cowlesman (1944-1947). Independently of how short this period might appear, it contains a set of fundamental publications and events, which were decisive for Klein's conception of econometrics, and which formed Klein's unique way of doing econometrics. At least four features are worth mentioning, which characterise this uniqueness. First, Klein was the only Cowlesman who carried on the macroeconometric programme beyond the 1940s, even if the Cowles had already abandoned it. Second, his pluralistic approach in terms of economic theory allowed him not only to use the Walrasian framework appraised by the Cowles Commission and especially by T.C. Koopmans, but also the Marxian and Keynesian frameworks, enriching the process of model specification and motivating economists of different stripes to make use of the nascent econometrics. Third, Klein differentiated himself from the rigid methodology praised at Cowles; while the latter promoted the use of highly sophisticated methods of estimation, Klein was convinced that institutional reality and economic intuition would contribute more to econometrics than the sophistication of these statistical techniques. Last but not least, Klein never gave up what he thought was the political objective of econometrics: economic planning and social reform.
Lawrence R. Klein(1920-2013)在20世纪40年代以来计量经济学的构建和进一步传播中发挥了重要作用。克莱因被认为是宏观计量经济学的主要开发者和实践者之一,他的影响体现在他将计量经济学模型应用于“经济波动和经济政策的分析”,并因此获得1980年瑞典央行纪念阿尔弗雷德·诺贝尔经济学奖。本文的目的是对克莱因作为计量经济学家的早期(1944-1950),更具体地说,是他作为考勒斯曼(1944-1947)时期的计量经济学形象进行描述。不管这段时间有多短,它包含了一系列基本的出版物和事件,这些出版物和事件对克莱因的计量经济学概念起了决定性作用,并形成了克莱因独特的计量经济学方法。至少有四个特征值得一提,它们体现了这种独特性。首先,克莱因是唯一一个在20世纪40年代以后继续推行宏观计量经济学计划的考勒斯曼人,尽管考勒斯夫妇已经放弃了这个计划。其次,他在经济理论方面的多元化方法使他不仅使用了考尔斯委员会特别是T.C.库普曼斯评价的瓦尔拉斯框架,而且还使用了马克思主义和凯恩斯主义框架,丰富了模型规范的过程,激励了不同流派的经济学家利用新兴的计量经济学。第三,克莱因将自己与考尔斯所推崇的僵化方法论区别开来;虽然后者提倡使用高度复杂的估计方法,但克莱因确信,制度现实和经济直觉比这些复杂的统计技术对计量经济学的贡献更大。最后但并非最不重要的一点是,克莱因从未放弃他所认为的计量经济学的政治目标:经济计划和社会改革。
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引用次数: 2
Pricing Decisions in an Experimental Dynamic Stochastic General Equilibrium Economy 实验动态随机一般均衡经济中的定价决策
Pub Date : 2014-10-24 DOI: 10.2139/ssrn.2529186
C. Noussair, D. Pfajfar, Janos Zsiros
We construct experimental economies, populated with human subjects, with a structure based on a nonlinear version of the New Keynesian dynamic stochastic general equilibrium (DSGE) model. We analyze the behavior of firms’ pricing decisions in four different experimental economies. We consider how well the experimental data conform to a number of accepted empirical stylized facts. Pricing patterns mostly conform to these patterns. Most price changes are positive, and inflation is strongly correlated with average magnitude, but not the frequency, of price changes. Prices are affected negatively by the productivity shock and positively by the output gap. Lagged real interest rate has a negative effect on prices, unless human subjects choose the interest rate, or firms sell perfect substitutes in the output market. There is inertia in price setting, firms integrate wage increases into their prices, and there is evidence of adaptive behavior in price-setting in our laboratory economy. The hazard function for price changes, however, is upward-sloping, in contrast to most empirical studies.
我们构建了以人类为主体的实验经济,其结构基于新凯恩斯主义动态随机一般均衡(DSGE)模型的非线性版本。我们分析了四个不同实验经济体中企业的定价决策行为。我们考虑实验数据与一些公认的经验程式化事实的一致性。定价模式大多符合这些模式。大多数价格变化都是正的,通货膨胀与价格变化的平均幅度密切相关,但与频率无关。价格受到生产率冲击的负面影响,而受到产出缺口的正面影响。滞后的实际利率对价格有负面影响,除非人类主体选择利率,或者企业在产出市场上出售完全替代品。在价格设定中存在惯性,企业将工资增长纳入其价格,在我们的实验室经济中,有证据表明在价格设定中存在适应性行为。然而,与大多数实证研究相反,价格变化的风险函数是向上倾斜的。
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引用次数: 20
New-Keynesian Economics Tales with Algebraic Notations 代数符号的新凯恩斯主义经济学故事
Pub Date : 2014-03-26 DOI: 10.2139/ssrn.2416570
Dushko Josheski
In this paper are outlined some new-Keynesian economic models along with their micro foundations. At first small model of interest rate consumption income and savings has been outlined. Modigliani-Miller model follows as one of the five neutralities in macroeconomics, and demand for money by Miller and Orr. Also Baumol-Tobin models with its extensions by Jovanovic and Romer has been subject to investigation. Issues in monetary policy such as printing money and government revenues of printing money are been subject to discussion too. In the last section Diamond-Dybvig model on bank runs is being outlined.
本文概述了新凯恩斯主义的几种经济模型及其微观基础。首先概述了利率、消费、收入和储蓄的小模型。作为宏观经济学五大中性之一的莫迪利亚尼-米勒模型紧随其后,而米勒和奥尔的货币需求模型紧随其后。此外,Jovanovic和Romer对Baumol-Tobin模型的扩展也受到了研究。货币政策方面的问题,如印钞和政府印钞的收入也是讨论的主题。最后一节概述了关于银行挤兑的Diamond-Dybvig模型。
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引用次数: 0
Characterizing Markov-Switching Rational Expectations Models 马尔可夫转换理性预期模型的特征
Pub Date : 2014-01-22 DOI: 10.2139/ssrn.1468331
Seonghoon Cho
Markov-switching rational expectations (MSRE) models can bring out fresh insights beyond what linear rational expectations (RE) models have done for macroeconomics as Davig and Leeper (2007) and Farmer, Waggoner and Zha (2009), among others, have noted and predicted. A lack of tractable methodological foundations, however, may have hindered researchers from uncovering the salient features of MSRE models. This paper improves the status quo to a level at which MSRE - inherently non-linear - models can be analyzed as easily and comprehensively as linear RE models. Specically, we provide a solution method, determinacy conditions, and an economic solution renement and completely characterize the set of RE equilibria for general MSRE models under determinacy and indeterminacy in the mean-square stability sense. These tasks are accomplished by simply solving a model forward and imposing the no-bubble condition for fundamental solutions. We apply our methodology to a New-Keynesian model subject to regime-switching in monetary policy and nd some unforeseen but intuitive determinacy results. Markov-switching in the private sector is also shown to deliver potentially rich dynamics.
正如Davig和Leeper(2007)以及Farmer、Waggoner和Zha(2009)等人所指出和预测的那样,马尔可夫转换理性预期(MSRE)模型可以带来比线性理性预期(RE)模型对宏观经济学所做的更多的新见解。然而,缺乏易于处理的方法基础可能阻碍了研究人员揭示MSRE模型的显著特征。本文改善了现状,使固有非线性的MSRE模型可以像线性RE模型一样容易和全面地分析。具体而言,我们给出了一种求解方法、确定性条件和一种经济解修正,并在均方稳定性意义上完整地表征了一般MSRE模型在确定性和不确定性下的RE均衡集。这些任务是通过简单地向前求解模型并对基本解施加无气泡条件来完成的。我们将我们的方法应用于新凯恩斯主义模型,该模型受货币政策中的政权转换和一些不可预见但直觉的确定性结果的影响。私营部门的马尔可夫转换也显示出潜在的丰富动态。
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引用次数: 33
Limited Asset Market Participation, Income Inequality and Macroeconomic Volatility 有限资产市场参与、收入不平等与宏观经济波动
Pub Date : 2013-12-18 DOI: 10.2139/ssrn.2369159
Giorgio Motta, P. Tirelli
By introducing external consumption habits and Limited Asset Market Participation in an otherwise standard New Keynesian DSGE model we uncover a causality link between limited asset market participation, consumption inequality and macroeconomic volatility. We also obtain that monetary contractions have redistributive effects in favour of asset holders, broadly confirming the findings in Coibion et al. (2012). Finally we analyze the impact of redistributive fiscal policies that target consumption inequality between households groups. Such policies have beneficial implications for macroeconomic stability, bringing the dynamic performance of the model close to the one generated by representative-agent DSGE models.
通过在标准的新凯恩斯DSGE模型中引入外部消费习惯和有限资产市场参与,我们揭示了有限资产市场参与、消费不平等和宏观经济波动之间的因果关系。我们还发现,货币紧缩具有有利于资产持有者的再分配效应,这在很大程度上证实了Coibion等人(2012)的发现。最后,我们分析了针对家庭群体之间消费不平等的再分配财政政策的影响。这些政策有利于宏观经济稳定,使模型的动态性能接近代表-代理DSGE模型产生的动态性能。
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引用次数: 25
Which Side of the Economy Is Affected More by Oil Prices: Supply or Demand? 经济的哪一方面受油价影响更大:供给还是需求?
Pub Date : 2013-09-30 DOI: 10.2139/ssrn.2333991
Farhad Taghizadeh‐Hesary, N. Yoshino
This chapter develops a New Keynesian model to examine a theoretical global economy with two basic macroeconomic components: an energy producer and an energy consumer. (From now on in this chapter whenever we refer to the “energy” or “energy prices”, we refer to “crude oil” and “crude oil price”, which is the main source of energy.) This simple economy uses these two components to evaluate how oil prices affect the consumer economy’s gross domestic product and inflation from 1960 to 2011. This model assumes that changes in the oil price transfer to macro variables through either supply (aggregate supply curve) or demand channels (aggregate demand curve). In order to examine the effects of this transfer, an IS curve is used to look at the demand side and a Phillips curve is used to analyze inflationary effects from the supply side. The empirical analysis concludes that movements in the oil price mainly affect the economy through the demand side (shifting the aggregate demand curve) by affecting household expenditures and energy consumption. This analysis provides several additional findings, among which is that easy monetary policies amplify energy demand more than supply, resulting in skyrocketing crude oil prices, which inhibit economic growth.
本章发展了一个新凯恩斯主义模型,以考察具有两个基本宏观经济组成部分的理论全球经济:能源生产者和能源消费者。(从现在开始,在本章中,每当我们提到“能源”或“能源价格”时,我们指的是“原油”和“原油价格”,这是能源的主要来源。)这个简单的经济学使用这两个组成部分来评估1960年至2011年油价如何影响消费经济的国内生产总值和通货膨胀。该模型假设石油价格的变化通过供给(总供给曲线)或需求渠道(总需求曲线)传递给宏观变量。为了检验这种转移的影响,使用IS曲线来观察需求侧,使用菲利普斯曲线来分析供给侧的通胀影响。实证分析的结论是,石油价格的变动主要通过影响家庭支出和能源消费的需求侧(移动总需求曲线)来影响经济。这一分析提供了几个额外的发现,其中包括宽松的货币政策放大了能源需求而不是供应,导致原油价格飞涨,从而抑制了经济增长。
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引用次数: 20
Environmental Policy and Macroeconomic Dynamics in a New Keynesian Model 新凯恩斯模型中的环境政策和宏观经济动态
Pub Date : 2013-09-27 DOI: 10.2139/ssrn.2332124
Barbara Annicchiarico, F. Di Dio
This paper studies the dynamic behavior of an economy under different environmental policy regimes in a New Keynesian model with nominal and real uncertainty. We find the following results: (i) an emissions cap policy is likely to dampen macroeconomic fluctuations; (ii) staggered price adjustment alters significantly the performance of the environmental policy regime put in place; (iii) the optimal environmental policy response to shocks is strongly influenced by the degree to which prices adjust and by the monetary policy reaction.
本文在具有名义不确定性和实际不确定性的新凯恩斯模型中研究了一个经济体在不同环境政策制度下的动态行为。我们发现以下结果:(i)排放上限政策可能会抑制宏观经济波动;(ii)交错调价会显著改变现行环境政策制度的表现;(三)应对冲击的最优环境政策受到价格调整程度和货币政策反应的强烈影响。
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引用次数: 184
期刊
ERN: Keynes; Keynesian; Post-Keynesian (Topic)
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