Nonlinear Mean Reversion across National Stock Markets: Evidence from Emerging Asian Markets

This paper seeks empirical evidence of nonlinear mean-reversion in relative national stock price indices for Emerging Asian countries. It is well known that conventional linear unit root tests suffer from low power against the stationary nonlinear alternative. Implementing the nonlinear unit root tests proposed by Kapetanios et al. (2003 Kapetanios, G., Shin, Y. and Snell, A. 2003. Testing for a unit root in the nonlinear STAR framework. Journal of Econometrics, 112: 359–379. [Crossref], [Web of Science ®] , [Google Scholar]) and Cerrato et al. (2009 Cerrato, M., de Peretti, C., Larsson, R. and Sarantis, N. 2009. “A nonlinear panel unit root test under cross section dependence”. Working Papers 28, Department of Economics, University of Glasgow [Google Scholar]) for the relative stock prices of Emerging Asian markets, we find strong evidence of nonlinear mean reversion, whereas linear tests fail to reject the unit root null for most cases. We also report some evidence that stock markets in China and Taiwan are highly localized.     

Inequality,financialization, and economic decline

The objective of this article is to argue that the labor productivity slowdown experienced in recent years by several advanced countries can be explained, following a Kaldorian-Classical approach, by a weak gross domestic product (GDP) performance and by a decline in the wage share. Moreover, drawing inspiration from recent post Keynesian literature, the authors identify the ongoing worsening in income equality and the increase in the degree of financialization as other major explanatory factors of sluggish productivity. The article will provide a brief literature review concerning nonmainstream attempts to endogenize labor productivity, beginning from the famous Verdoorn-Kaldor law (Verdoorn, 1949 Verdoorn, P.J. “Fattori che Regolano lo Sviluppo della Produttività del Lavoro.” L’Industria, 1949, 1, March, 3–10. [Google Scholar]) and the Kaldor technical progress function (Kaldor, 1961 Kaldor, N. “Capital, Accumulation and Economic Growth.” In F.A. Lutz and D.C. Hague (eds.), The Theory of Capital. New York: St. Martin’s Press, 1961, 177–222.[Crossref] , [Google Scholar]) and including Sylos Labini’s productivity equation (Sylos Labini, 1984 Sylos Labini, P. The Forces of Economic Growth and Decline. Cambridge, MA: MIT Press, 1984. [Google Scholar], 1999 —. “The Employment Issues: Investment, Flexibility and the Competition of Developing Countries.” BNL Quarterly Review, 1999, 52 (10), 257–280. [Google Scholar]). The authors will then discuss how labor flexibility and shareholder value orientation, one of the main aspects of financialization, can negatively affect equality and labor productivity. Finally, they propose an extended version of the Sylos Labini’s equation, where productivity growth is claimed to depend positively on GDP rate of growth and the wage share, and negatively on income inequality and financialization. They submit to empirical scrutiny their extended productivity equation; the results of their estimations provide support to their theoretical argument.     

Reforming the international monetary system: a stock-flow-consistent approach

Abstract:

The emergence and persistence of large trade imbalances as well as the volatility of financial flows among countries have been attributed, at least in part, to the inadequacy of the current international monetary system after the breakdown of Bretton Woods. From a different perspective, the current eurozone crisis is also the result, in our view, of a flawed institutional setting. These problems call for reforms to mitigate or avoid the recessionary bias that is the outcome of current systems, as Keynes predicted in the discussion preceding the Bretton Woods agreements. In this paper we briefly review the evidence on international imbalances, and survey the rapidly growing literature on the subject. We introduce a set of models based on the stock-flow-consistent approach pioneered by Godley (1999 Godley, W. “Open Economy Macroeconomics Using Models of Closed Systems.” Working Paper no. 281, Levy Economics Institute of Bard College, 1999. [Google Scholar]) and Lavoie and Godley (2003 Lavoie, M., and Godley, W. “Two-Country Stock-Flow Consistent Macroeconomics Using a Closed Model Within a Dollar Exchange Regime.” CERF Working Paper no. 10, University of Cambridge, 2003. [Google Scholar]). We discuss how to use these models to explore potential reform of the international monetary system.     

Linear and nonlinear Granger-causality between short-term and long-term interest rates during business cycles

This paper is about the causal relationship between short-term and long-term interest rates in the US and Canada. To that end, we apply a linear Granger causality test introduced by Toda and Yamamoto (1995 Toda, H. Y., and T. Yamamoto. 1995. “Statistical Inference in Vector Autoregressions with Possibly Integrated Processes.” Journal of Econometrics 66 (1–2): 225–250. doi:10.1016/0304-4076(94)01616-8.[Crossref], [Web of Science ®] , [Google Scholar]) and the nonlinear Granger causality test of Diks and Panchenko (2006 Diks, C., and V. Panchenko. 2006. “A New Statistic and Practical Guidelines for Nonparametric Granger Causality Testing.” Journal of Economic Dynamics and Control 30 (9–10): 1647–1669. doi:10.1016/j.jedc.2005.08.008.[Crossref], [Web of Science ®] , [Google Scholar]). By combining linear causality effects with the nonlinear ones, it is seen that the most common Granger causality direction between short-term and long-term interest rates is a bidirectional one. We also find that nonlinear Granger causality can be found where no linear causality had been uncovered. Moreover, our findings show that during recent business cycles, the federal funds rate (in the US) and the overnight rate (in Canada) still Granger-cause long-term interest rates significantly.     

Sustainability of external debt: further evidence from non-linear framework

This study investigates sustainability of external debt under a two-step non-linear framework. The first step uses a general linearity test proposed by Harvey and Leybourne (2007 Harvey, David I. and Leybourne, Stephen J. 2007. Testing for time series linearity. Econometric Journal, 10: 149–165. [Crossref], [Web of Science ®] , [Google Scholar]) to determine the linearity property of external debt. The second step applies a non-linear ADF unit root test proposed by Kapetanios, Shin, and Snell (2003 Kapetanios, G., Y. Shin, and A. Snell. 2003. Testing for a unit root in the nonlinear STAR. Journal of Econometrics 112: 359–79.  [Google Scholar]) on the non-liner processes and the linear ADF test on the linear processes to examine the sustainability of external debt. The analysis of 36 debt and 55 current account ratios identifies strong evidence of non-linearity and sustainability. The results indicate superior performance of the non-linear unit root test over the ADF test in determining the stationary property of the data.     

The effectiveness of fiscal and monetary policy responses to twin crises

We study how effective fiscal and monetary policy responses are during a twin crisis. Using the dataset provided by Laeven and Valencia (2008 Laeven, L and Valencia, F. (2008) Systemic banking crises: a new database. IMF Working Paper No. 08/224 [Google Scholar]), we identify 57 episodes of twin crises. Following the methods proposed in Baldacci et al. (2009 Baldacci, E. 2009. Gupta, S. and Mulas-Granados, C., How effective is fiscal policy response in systemic banking crises?, IMF Working Paper No. 09/160 [Google Scholar]) and Hutchison et al. (2010 Hutchison, M. 2010. Noy, I. and Wang, L., Fiscal and monetary policies and the cost of sudden stops, Journal of International Money and Finance, 29, 973–87 [Google Scholar]), we construct the variables measuring the duration and output cost of a twin crisis. We find that fiscal policy does not seem to be associated with the shortening of a twin crisis. Regarding monetary policy, we find that monetary tightening is associated with the lengthening of a twin crisis duration, consistent with the result in Hutchison et al. (2010 Hutchison, M. 2010. Noy, I. and Wang, L., Fiscal and monetary policies and the cost of sudden stops, Journal of International Money and Finance, 29, 973–87 [Google Scholar]) dealing with a sudden stop crisis. In addition, our results show that while a mild monetary expansion is effective in reducing a twin crisis duration, over-expansionary monetary policy loses its effectiveness.     

Nonlinearity in real exchange rates: an approach with disaggregated data and a new linearity test

Employing disaggregated real exchange rates from nine European counties in 16 goods categories, we assess in this study the nonlinearity in the real exchange rates. Surprisingly, we find evidence for nonlinearity in only four (10) out of 143 series with the linearity test proposed by Harvey et al. (2008 Harvey, D. I., Leybourne, S. J. and Xiao, B. 2008. A powerful test for linearity when the order of integration is unknown. Studies in Nonlinear Dynamics and Econometrics, 12 Art 8[Web of Science ®] , [Google Scholar]) at the 5% (10%) significance level. This result differs greatly from those of Juvenal and Taylor (2008 Juvenal, L. and Taylor, M. P. 2008. Threshold adjustment of deviations from the law of one price. Studies in Nonlinear Dynamics and Econometrics, 12 Art 8[Web of Science ®] , [Google Scholar]), Imbs et al. (2003 Imbs, J., Mumtaz, H., Raven, M. O. and Rey, H. 2003. Nonlinearities and real exchange rate dynamics. Journal of the European Economic Association, 1: 639–49. [Crossref] , [Google Scholar]), Sarno et al. (2004 Sarno, L., Taylor, M. P. and Chowdhury, I. 2004. Nonlinear dynamics in deviations from the law of one price: a broad-based empirical study. Journal of International Money and Finance, 23: 1–25. [Crossref], [Web of Science ®] , [Google Scholar]) and Berka (2009 Berka, M. 2009. “Non-linear adjustment in law of one price deviations and physical characteristic of good”. In Review of International Economics Vol. 17, 51–73.  [Google Scholar]), who report ample evidence for nonlinearity for the same or similarly disaggregated real exchange rate datasets.     

Banking theories and macroeconomics

Mainstream models that allow for financial operations are characterized by the understanding of banks as intermediaries of outside money (IOM). This approach to banks became dominant thanks to a peculiar rhetorical device by Tobin (1963 Tobin, J. 1963. “Commercial Banks as Creators of ‘Money’.”Paper 205. New Haven, CT: Cowles Foundation. [Google Scholar]). In recent years, however, this understanding is being increasingly questioned and an old view of banks as originators of inside money (OIM) is being reconsidered. The present article highlights the fundamental differences of these alternative doctrines from a money supply perspective and provides a simple theoretical argument to consider the limits of a point of view à la Tobin and regard the OIM banking theory more general than the IOM theory.     

Globalization and the effects of changes in functional income distribution on aggregate demand in Germany

Germany has experienced a period of extreme nominal and real wage moderation since the mid‐1990s. Contrary to the expectations of liberal economists, this has failed to improve Germany’s mediocre economic performance. However, Germany is now running substantial current account surpluses. One possible explanation for Germany’s disappointing performance is found in Kaleckian theory, which highlights that the domestic demand effect of a decline in the wage share will typically be contractionary, whereas net exports will increase (Blecker 1989 Blecker, R. 1989. International competition, income distribution and economic growth. Cambridge Journal of Economics, 13: 395–412. [Web of Science ®] [Google Scholar]). The size of the foreign demand effect will critically depend on the degree of openness of the economy. This paper aims at estimating empirically the demand side of a Bhaduri and Marglin (1990 Bhaduri, A. and Marglin, S. 1990. Unemployment and the real wage: The economic basis for contesting political ideologies. Cambridge Journal of Economics, 14: 375–93. [Crossref], [Web of Science ®] [Google Scholar]) type model for Germany. The paper builds on the estimation strategy of Stockhammer, Onaran, and Ederer (2009 Stockhammer, E., Onaran, Ö. and Ederer, S. 2009. Functional income distribution and aggregate demand in the Euro area. Cambridge Journal of Economics, 33(1): 139–59. [Crossref], [Web of Science ®] [Google Scholar]) and Hein and Vogel (2008 Hein, E. and Vogel, L. 2008. Distribution and growth reconsidered – empirical results for six OECD countries. Cambridge Journal of Economics, 32: 479–511. [Crossref], [Web of Science ®] [Google Scholar], 2009 Hein, E. and Vogel, L. 2009. Distribution and growth in France and Germany – single equation estimations and model simulations based on the Bhaduri/Marglin‐model. Review of Political Economy, 21(2): 245–72. [Taylor & Francis Online] [Google Scholar]). The main contribution lies in a careful analysis of the effects of globalization. Since Germany is a large open economy by now it is a particularly interesting case study.     

Two Sides of the Same Coin: Re-examining Nepotism and Discrimination in a Segmented Society

Abstract

We report the results from a series of trust games designed to distinguish racial discrimination from racial nepotism, played with a sample of high school students in Cape Town, South Africa. In contrast to the original work in this regard by Fershtman et al. (2005 Fershtman, C., Gneezy, U. and Verboven, F. 2005. “Discrimination and Nepotism: the efficiency of the anonymity rule,”. Journal of Legal Studies, 34: 371–396. [Crossref], [Web of Science ®] , [Google Scholar]), we find considerably greater heterogeneity in the way that proposers respond to the revealed racial identity of their partner, with nepotism being a dominant behavior. However, while some proposers exhibit a nepotistic bias in their offers that favors in-group members on average, others exhibit a nepotistic strategy that favors out-group members. A consequence of this nepotism is that both efficiency and equity are reduced on average.     

Ownership herding and informational herding

This article takes as its point of departure the herding model of Bikhchandani et al. (1992 Bikhchandani, S., Hirshleifer, D. and Welch, I. 1992. A theory of fads, fashion, custom, and cultural change as informational cascades. Journal of Political Economy, 100: 992–1026. [Crossref], [Web of Science ®] , [Google Scholar]). We extend earlier experimental evidence to distinguish between informational herding, as in the model, and ownership herding, an alternative explanation for observed behaviour.     

Functional income distribution and growth in Thailand: A post Keynesian econometric analysis

The aim of this article is to analyze the effect of the income distribution between labor and capital on the growth performance of Thailand from a post Keynesian view. It rests on the theoretical model of Bhaduri and Marglin (1990 Bhaduri, A., and Marglin, S. “Unemployment and the Real Wage: The Economic Basis for Contesting Political Ideologies.” Cambridge Journal of Economics, December 1990, 14 (4), 375–393.[Crossref], [Web of Science ®] , [Google Scholar]) to see if an increase in the labor income share has a sufficient positive effect on consumption to offset a negative effect on investment and export demand. In order to investigate the question empirically we adopt and develop the approach of Stockhammer, Onaran, and Ederer (2009 Stockhammer, E.; Onaran, Ö.; and Ederer, S. “Functional Income Distribution and Aggregate Demand in the Euro-area.” Cambridge Journal of Economics, 2009, 33 (1), 139–159.[Crossref], [Web of Science ®] , [Google Scholar]). Several measures of the labor income share are calculated to take into account the fact that wage labor represents only half of the total labor force and check the robustness of our results. We also introduce a new treatment of external trade to better integrate the price competitiveness of Thailand. The econometric investigation shows that the growth regime is profit-led over the period 1970–2011, which shows that rebalancing the Thai economy will be difficult and requires an overall change of strategy going beyond a simple prolabor policy.     

Rethinking liquidity creation: Banks,shadow banks and the elasticity of finance

In this article, the authors use the concept of the hierarchy of money found in the works of Minsky (2008 Minsky, H. [1986]2008. Stabilizing an Unstable Economy. New Haven, CT: Yale University Press. [Google Scholar][1986]), Foley (1987 Foley, D. 1987. “Money in Economic Activity.” In The New Palgrave: Money, edited by J. Eatwell, M. Milgate, and P. Newman, 519–525. New York, NY: W.W. Norton.[Crossref] , [Google Scholar]), Wray (1990 Wray, L. R. 1990. Money and Credit in Capitalist Economies: The Endogenous Money Approach. Aldershot, UK: Edward Elgar. [Google Scholar]), and Bell (2001 Bell, S. 2001. “The Role of the State and the Hierarchy of Money.” Cambridge Journal of Economics 25 (2):149–63.[Crossref], [Web of Science ®] , [Google Scholar]) to analyze the process of liquidity creation in modern capitalist economies where shadow banks play an active role. They abandon the narrow focus on banks as the creators of money as well as the idea that nonbank financial institutions are mere intermediaries between savers and borrowers. Instead, the authors demonstrate that, similar to banks, nonbank financial institutions and foreign banks (through their cross-border activities) create liquidity endogenously by leveraging over the liabilities of entities hierarchically above them. The authors further elucidate Kregel’s concept of “fictitious” liquidity in the context of the hierarchy of financial liabilities, distinguishing it from “true” liquidity. By bringing shadow banks and the euro-currency markets into to the pyramid of financial liabilities, they develop a more complete framework of liquidity creation in modern capitalist economies. Their “extended” pyramid is useful for analyzing not only the fragility that may arise from the interactions between firms, households and banks, but also that which may originate through the interactions between banks, shadow banks and foreign banks.     

PATTERNS OF INNOVATION IN THE SERVICE SECTOR: SOME INSIGHTS FROM THE SPANISH INNOVATION SURVEY

Although the attention of innovation studies has traditionally been focused on manufacturing, the differential features of innovation activities carried out by services are gaining more and more relevance in innovation research. The aim of this paper is to thoroughly analyse the data from the Spanish Innovation Survey 2000, the first large-scale innovation survey that included service activities in Spain, in order to identify the main patterns of innovation in Spanish services. The results of our investigations confirm that a high degree of heterogeneity, in relation to innovation patterns, exists among service firms and among service industries as well. Nevertheless, important similarities are found between pioneer classifications, such as the theoretical taxonomy of service industries by Soete and Miozzo (1989) Soete, L. and Miozzo, M. 1989. “Trade and Development in Services: A Technological Perspective”. The Netherlands: MERIT Research Memorandum, 89-031. MERIT.  [Google Scholar] or the classification of service firms elaborated by Hollenstein (2003) Hollenstein, H. 2003. Innovation modes in the Swiss service sector: a cluster analysis based on firm-level data. Research Policy, 32(5): 845–863. [Crossref], [Web of Science ®] , [Google Scholar], and the taxonomy we obtained by applying multivariate analysis.     

Purchasing power parity for G-7 countries: panel SURADF tests

In this study, the panel Seemingly Unrelated Regressions Augmented Dickey–Fuller (SURADF) tests advanced by Breuer et al. (2001 Breuer, J. B., McNown, R. and Wallace, M. S. 2001. Misleading inferences from panel unit-root tests with an illustration from purchasing power parity. Review of International Economics, 9: 482–93. [Crossref] , [Google Scholar]) are used to test the validity of Purchasing Power Parity (PPP) for G-7 countries over the period 1980M1 to 2008M5. The empirical results from several panel-based unit root tests indicate that PPP does not hold for G-7 countries under study; however, Breuer et al.'s (2001 Breuer, J. B., McNown, R. and Wallace, M. S. 2001. Misleading inferences from panel unit-root tests with an illustration from purchasing power parity. Review of International Economics, 9: 482–93. [Crossref] , [Google Scholar]) panel SURADF tests unequivocally indicate that PPP is valid for half of the G-7 countries.     

The J-Curve phenomenon in European transition economies: A nonlinear ARDL approach

This article examines the J-curve phenomenon for 16 European transition economies. While previous studies assume a linear relationship between the exchange rate and the trade balance, this paper allows for nonlinearity. Following Bahmani-Oskooee and Fariditavana (2015 Bahmani-Oskooee, M., and H. Fariditavana. 2015. “Nonlinear ARDL Approach, Asymmetric Effects and the J-curve.” Journal of Economic Studies 42 (3): 519–530. doi:10.1108/JES-03-2015-0042.[Crossref], [Web of Science ®] , [Google Scholar], 2016 Bahmani-Oskooee, M., and H. Fariditavana. 2016. “Nonlinear ARDL Approach and the J-curve Phenomenon.” Open Economies Review 27 (1): 51–70. doi:10.1007/s11079-015-9369-5.[Crossref], [Web of Science ®] , [Google Scholar]), the empirical method used is the nonlinear cointegrating autoregressive distributed lag (NARDL) model of Shin et al. (2013 Shin, Y., B. Yu, and M. J. Greenwood-Nimmo. 2013. “Modelling Asymmetric Cointegration and Dynamic Multipliers in a Nonlinear ARDL Framework.” In Festschrift in Honor of Peter Schmidt, edited by William C. Horrace and Robin C. Sickles. New York, NY: Springer Science and Business Media. [Google Scholar]) in which short-run and long-run nonlinearities are introduced via positive (appreciation) and negative (depreciation) partial sum decompositions of the real exchange rate. We argue that the lack of support for the J-curve phenomenon could be due to the linearity assumption. This issue is examined by utilizing the linear and the NARDL models. Using the linear autoregressive distributed lag (ARDL) model, we are unable to find support for the J-curve phenomenon in any case. However, when the NARDL model is used, we are able to find evidence for the J-curve in 12 out of the 16 countries. This suggests that allowing for nonlinearity in the adjustment process is important when studying the J-curve phenomenon.     

The Challenge of Radical Political Economics

The aim of this paper is to develop a theoretical framework for the study and integration of financial innovation in the institutional structures that support the operation of the monetary system. The background of the analysis comes from original institutional economics (Bush and Tool 2003 Bush, Paul Dale and Marc R. Tool. “Foundational Concepts for Institutionalist Policy Making.” In Institutional Analysis and Economic Policy, edited by Paul D. Bush and Marc R. Tool, pp. 1–46. Dordrecht, Germany: Kluwer Academic Publishers, 2003.[Crossref] , [Google Scholar]; Foster [1942] 1981 Foster, J. Fagg. “John Dewey and Economic Value.” Journal of Economic Issues 15, 4 ([1942] 1981): 871–879. [Google Scholar], [1949] 1981 Foster, J. Fagg. “The Relation Between Theory of Value and Economic Analysis.” Journal of Economic Issues 15, 4 ([1949] 1981): 899–905. [Google Scholar]; Veblen [1914] 1964 Veblen, Thorstein. The Instinct of Workmanship and the State of the Industrial Arts. New York, NY: Augustus M. Kelley, [1914] 1964. [Google Scholar], [1889] 1996 Veblen, Thorstein. The Theory of the Leisure Clash. London: Dover, [1889] 1996. [Google Scholar]), the state theory of money (Ingham 2004 Ingham, Geoffrey. The Nature of Money. London: Polity, 2004. [Google Scholar]; Papadopoulos 2009 Papadopoulos, Georgios. “Between Rules and Power: Money as an Institution Sanctioned by Political Authority.” Journal of Economic Issues 43, 4 (2009): 951–969.[Taylor &; Francis Online] , [Google Scholar]), and a specific account of social ontology based on constitutive and normative rules as well as the notion of collective intentionality (Searle 2005 Searle, John. “What Is an Institution?” Journal of Institutional Economics 1, 1 (2005):1–22.[Crossref] , [Google Scholar], 2010 Searle, John. Making the Social World. Oxford, UK: Oxford University Press, 2010. [Google Scholar]). The aim is a dynamic framework for the analysis of the institutional evolution of money, whereby institutional change comes from technology, and the state acts both as regulator of the institutional adjustment and guarantor of the stability and the efficiency of the monetary system. In that sense, the framework outlines the context and principles for the government regulation of financial innovation.     

Further investigation of the uncertain trend in US GDP

The presence of deterministic or stochastic trend in US GDP has been a continuing debate in the literature of macroeconomics. Ben-David and Papell (1995 Ben-David, D and Papell, DH. 1995. The great wars, the great crash, and steady growth: some new evidence about an old stylized. Journal of Monetary Economics, 36: 453–75. [Crossref], [Web of Science ®] , [Google Scholar]) found evidence in favour of trend stationarity using the secular sample of Maddison (1991 Maddison, A. 1991. Dynamics Forces in Capitalist Development: A Long-Run Comparative View, Oxford: Oxford University Press.  [Google Scholar]). More recently, Murray and Nelson (2000 Murray, CJ and Nelson, CR. 2000. The uncertain trend in U.S. GDP. Journal of Monetary Economics, 46: 79–95. [Crossref], [Web of Science ®] , [Google Scholar]) correctly criticized this finding arguing that the Maddision data are plagued with additive outliers (AO), which bias inference towards stationarity. Hence, they propose to set the secular sample aside and conduct inference using a more homogeneous but shorter time-span post-WWII sample. In this article we re-visit the Maddison data by employing a test that is robust against AO's. Our results suggest the US GDP can be modelled as trend stationary process     

Immiserizing Growth and the Metzler Paradox in the Ricardian Model

Conditions for the occurrence of immiserizing growth and the Metzler paradox are analysed in the Ricardian model when consumers in the foreign country have Leontief preferences while consumers in the home country have Cobb-Douglas preferences. By using specific functional forms, the conditions for the occurrence of the two paradoxes are defined in terms of the exogenous parameters of the model rather than endogenous variables such as the foreign import demand elasticity in the conditions of Bhagwati (1958) Bhagwati, J. N. 1958. Immiserizing growth: a geometrical note. Review of Economic Studies, 25: 201–205. [Crossref], [Web of Science ®] , [Google Scholar] and Metzler (1949a Metzler, L. A. 1949a. Tariffs, the terms of trade and the distribution of national income. Journal of Political Economy, 57: 1–29. [Crossref], [Web of Science ®] , [Google Scholar], b Metzler, L. A. 1949b. Tariffs, international demand, and domestic prices. Journal of Political Economy, 57: 345–351. [Crossref], [Web of Science ®] , [Google Scholar]). It is shown that the simultaneous occurrence of both paradoxical results is possible for some parameter values.     

Samuelson and Davidson on ergodicity: A reformulation

The concept of ergodicity in economics seems to have the qualities of a shibboleth—a word or saying used by adherents of a party, sect, or belief, and usually regarded by others as empty of real meaning. It is in use by both neoclassical economics—after Samuelson (1965 Samuelson, P. A. “Proof That Properly Anticipated Prices Fluctuate Randomly.” Industrial Management Review, 1965, 6 (2), 41–49.[Web of Science ®] , [Google Scholar], p. 43), who used the term in his paper on what later became a foundation of the efficient market hypothesis—and post Keynesian economics—after Davidson, who picked up the term in order to highlight methodological differences. Considering the origin of the concept in statistical physics and its use in the topology of dynamical systems, which most economists are not conversant with, the importance ascribed to ergodicity in economic debate seems mystifying. We deconstruct the meaning of the term in the major contributions of Samuelson and Davidson. We suggest an alternative to (non)ergodicity to discuss the nature of randomness in the real world. While neoclassical theory assumes stochastic randomness, post Keynesians assume nonstochastic randomness, a term developed by the mathematician Kolmogorov (1986 Kolmogorov, A.N. “On the Logical Foundations of Probability Theory.” In K. Ito, and J.V. Prokhorov (eds.), Probability and Mathematical Statistics, Moscow, 1986, pp. 467–471. [Google Scholar], p. 467). We argue that even in an ergodic world there is a problem with the idea that stochastic randomness can be dealt with by the financial system.