chaos in oil prices evidence from futures markets abstract we test for the presence of low dimensional chaotic structure in crude oil heating oil and unleaded gasoline futures prices from the early 1980s evidence on chaos will have important implications for regulators and short term trading strategies while we find strong evidence of non linear dependencies the evidence is not consistent with chaos our test results indicate that arch type processes with controls for seasonal variation in prices generally explain the non linearities in the data we also demonstrate that employing seasonally adjusted price series contributes to obtaining robust results via the existing tests for chaotic structure maximum likelihood methodologies that are robust to the non linear dynamics lend support for samuelson s hypothesis on contract maturity effects in futures price changes however the tests for chaos are not found to be sensitive to the maturity effects in the futures contracts the results are robust to controls for the oil shocks of 1986 and 1991

more mortgages lower growth in newly collected data on 46 economies over 1990 2011 we show that financial development since 1990 was mostly due to growth in credit to real estate and other asset markets which has a negative growth coefficient we also distinguish between growth effects of stocks and flows of credit we find positive growth effects for credit flows to nonfinancial business but not for mortgage and other asset market credit flows by accounting for the composition of credit stocks and for the effect of credit flows we explain the insignificant or negative growth effects of financial development in recent times what was true in the 1960s 1970s and 1980s when the field of empirical credit growth studies blossomed is no longer true in the 1990s and 2000s new bank lending is not primarily to nonfinancial business and financial development may no longer be good for growth these trends predate the 2008 crisis they prompt a rethink of the role of banks in the process of economic growth jel e44 o16 o40 c33

on the indeterminacy of capital accumulation paths abstract in neoclassical optimal growth models the stability of the accumulation paths depends on the discount parameter we prove that for discount factors small enough the policy function which describes an optimal path can be of any type the result is achieved using the notion of concavity we adopt a constructive approach given any twice differentiable map we show how to construct an optimal growth problem which produces that map as the optimal policy function a consequence is that chaos can appear in these models we also provide bounds on the values of the discount parameter for which indeterminacy is possible

a characterization of erratic dynamics in the overlapping generations model abstract in this paper we characterize and give examples o wide classes of utility functions which generate erratic dynamics in the standard deterministic overlapping generations model erratic dynamics refers to feasible trajectories which are bounded but which do not converge to stationary points or periodic orbits we show that such trajectories are pareto efficient we introduce credit into the model and show how a constant credit expansion rate can result in erratic trajectories in prices and the real value of credit finally we briefly discuss certain technical aspects of the mathematics used and the statistical nature of the dynamics that can arise from deterministic dynamical systems

monetary policy macro stability and growth there is greater appreciation now amongst economists of the negative effect of uncertainty on investment growth and equality especially when credit constraints are widespread this implies an important linkage between the transparency and predictability of the policy environment and growth and equality the paper begins with a literature survey on the inflation and inflation volatility link the uncertainty and investment link and the inflation volatility and growth link this framework is used to examine the experience of south africa s new monetary policy regime inflation targeting it in achieving greater macrostability south africa is an interesting case study being one of the more advanced of the emerging markets with its deep and sophisticated financial system and yet with around 35 percent unemployment and a legacy of developmental problems from the apartheid era the authors demonstrate using evidence from three sources of micro data that the new monetary regime is more credible transparent and predictable they examine the performance of monetary policy and argue it has not resulted in real interest rate levels that are a hindrance to growth they explore the better response under it to big external shocks like exchange rate depreciation as compared with the monetary regime prior to it the paradox is examined of success in achieving macro stability where greater household acquisition of debt and increased demand is both inflationary and limits saving hence constraining corporate investment the paper concludes with lessons from south africa s recent successful monetary policy experience for other emerging market countries and for less developed countries central banks e g in africa

nonlinearities in economic dynamics two reasons that led to the dominance of the linear stochastic difference equations approach the first one was the fact that the nonlinear systems seemed incapable of reproducing the statistical aspects of actual economic time series at best such models were able to produce periodic motion1 and an examination of the spectra of economic time series showed the absence of the spikes that characterise periodic data the emphasis on the equilibrium approach to aggregate economic behaviour cf lucas i 986 would make things even more difficult the plethora of stability results for models of infinitely lived agents with perfect foresight turnpike theorems suggested that even the regular fluctuations that had been derived in the literature on endogenous business cycles were incompatible with a theory that had solid microeconomic foundations further this indicated that while nonlinearities could be present the explanations of the fluctuations had to rest solely on the presence of exogenous shocks that working through the equilibrating mechanism would create the observed randomness if such shocks were absent the system would tend to a stationary state the second reason was the empirical success of the models based on linear stochastic difference equations low order autoregressive processes captured some of the features of aggregate time series in turn these processes can in principle result from an economy with complete markets where production is subject to exogenous shocks though the task of confronting these equilibrium models with actual data has not yielded uncontroversial results see the discussion and references in section i there was no obvious gain in the

on the relationship between growth and volatility abstract we study the relationship between output growth and output variability in a simple stochastic monetary growth model with nominal rigidities and learning by doing we show that this relationship may be positive or negative depending on the impulse source of fluctuations

macroprudential policies capital flows and the structure of the banking sector abstract using a large sample of advanced and emerging market economies over the period 1999 2012 we examine the effectiveness of macroprudential policies mpps in managing cross border bank flows conditioning on the structure of the banking sector in the mpp implementing country we find that higher regulatory quality and a higher credit to deposit ratio increase the effectiveness of mpps while a higher cost to income ratio has the opposite effect if all three financial variables are evaluated at the median the marginal effect of our preferred mpp measure leads to a reduction of international bank inflows in percent of gdp by around half a percentage point and is only marginally significant however when the more enhanced 25th 10th percentiles of their respective distributions are considered we observe as a response to the same mpp measure a reduction of bank inflows by 3 44 5 39 percentage points that is highly statistically and economically significant additionally we find that the structure of the domestic banking sector determines spillovers from mpps across asset classes while spillovers from mpps across countries are a function of banking sector conditions both at home and abroad

the gold standard perfectly integrated world markets or slow adjustment of prices and interest rates abstract we investigate the balance of payments adjustment mechanism for canada the usa and the uk during the gold standard era regardless of whether the data are stationary or non stationary the results do not support the assumption of perfectly integrated world markets the evidence is more consistent with the price specie flow mechanism with prices and interest rates adjusting over time to restore equilibrium in the balance of payments

macroeconomic policies and performance in latin america abstract this paper provides new evidence on macroeconomic policies and results in latin america and the caribbean results are i credibility allows adoption of counter cyclical macroeconomic policies ii accuracy in meeting inflation targets depends on central bank independence and country risk iii intermediate exchange rate er regimes have become less persistent iv er regimes matter for inflation and growth v real er trends are not explained by productivity growth and supply reforms do not resolve real er misalignments vi financial integration has increased significantly vii foreign shocks are a major growth determinant and viii composition of foreign capital inflows matters for growth

revisiting the model of credit cycles with good and bad projects abstract we revisit the model of endogenous credit cycles by matsuyama 2013 sections 2 4 first we show that the same dynamical system that generates the equilibrium trajectory is obtained under a much simpler setting such a streamlined presentation should help to highlight the mechanism through which financial frictions cause instability and recurrent fluctuations then we discuss the nature of fluctuations in greater detail when the final goods production function is cobb douglas for example the unique steady state possesses corridor stability locally stable but globally unstable for empirically relevant parameter values this also means that when a parameter change causes the steady state to lose its local stability its effects are catastrophic and irreversible so that even a small temporary change in the financial friction could have large permanent effects on volatility other features of the dynamics include an immediate transition from the stable steady state to a stable asymmetric cycle of period n 3 along which n 1 2 consecutive periods of gradual expansion are followed by one period of sharp downturn as well as to a robust chaotic attractor these results demonstrate the power of the skew tent map as a tool for analyzing a regime switching dynamic economic model

inflation and growth stories short and tall this paper reviews the stories that economists tell about the growth effects of inflation informal accounts are common but there are few models that get to grips with the effects that are probably central partly as a result of this and partly as a result of many econometric problems much of the empirical evidence remains unconvincing the paper assesses the various contributions and suggests possible improvements

methodological issues in asset pricing random walk or chaotic dynamics abstract we analyze the theoretical foundations of the efficient market hypothesis by stressing the efficient use of information and its effect upon price volatility the random walk hypothesis assumes that price volatility is exogenous and unexplained randomness means that a knowledge of the past cannot help to predict the future we accept the view that randomness appears because information is incomplete the larger the subset of information available and known the less emphasis one must place upon the generic term randomness we construct a general and well accepted intertemporal price determination model and show that price volatility reflects the output of a higher order dynamic system with an underlying stochastic foundation our analysis is used to explain the learning process and the efficient use of information in our archetype model we estimate a general unrestricted system for financial and agricultural markets to see which specifications we can reject what emerges is that a system very close to our archetype model is consistent with the evidence we obtain an equation for price volatility which looks a lot like the garch equation the price variability is a serially correlated variable which is affected by the bayesian error and the bayesian error is a serially correlated variable which is affected by the noisiness of the system in this manner we have explained some of the determinants of what has been called the randomness of price changes

are commodity prices chaotic evidence from futures markets we conduct tests for the presence of low dimensional chaotic structure in the futures prices of four important agricultural commodities though there is strong evidence of non linear dependence the evidence suggests that there is no long lasting chaotic structure the dimension estimates for the commodity futures series are generally much higher than would be for low dimension chaotic series our test results indicate that autoregressive conditional heteroskedasticity arch type processes with controls for seasonality and contract maturity effects explain much of the non linearity in the data we make a case that employing seasonally adjusted price series is important in obtaining robust results via some of the existing tests for chaotic structure finally maximum likelihood methodologies that are robust to the non linear dynamics lend strong support to the samuelson hypothesis of maturity effects in futures price changes 2002 elsevier science b v all rights reserved

only income diverges a neoclassical anomaly the neoclassical growth model ngm is only consistent with the absolute divergence in output levels we observe if some determinants of steady state income are also diverging in this paper we show that accumulation rates of physical and human capital are actually significantly converging as are openness to trade and several variables measuring institutional quality output divergence in the face of input policy and institutional convergence is a deep anomaly for the ngm

is the relationship between financial development and economic growth monotonic evidence from a sample of middle income countries summary we revisit the relationship between financial development and economic growth in a panel of 52 middle income countries over the 1980 2008 period using pooled mean group estimations in a dynamic heterogeneous panel setting we show that there is an inverted u shaped relationship between finance and growth in the long run in the short run the relationship is insignificant this suggests that too much finance can exert a negative influence on growth in middle income countries the finding of a non monotonic effect of financial development on growth is confirmed by estimating a threshold model

behavioral finance and its implications for stock price volatility an increasing number of academic and professional articles are being published about research on and potential applications of behavioral finance this article offers a more complete picture of the origin content and rationale behind this emerging area of study than previously presented in the process the traditional dominance in finance of the economic concepts of subjective expected utility and rationality are discussed in addition the article argues that the newer theories of chaos and adaptive decision making which have a place in behavioral finance can help explain the puzzle of stock price volatility

the dialogue between the economic and the ecologic theories of evolution abstract the economic and ecologic theories of evolution have developed by means of a mutual dialogue and interaction from the early nineteenth century to the present despite certain fundamental differences between them this mutual influence has involved the rise of the equilibrium concept as well as the appearance of cyclical and chaotic dynamic models both theories have faced a conflict between gradualistic and punctuationist saltationalist approaches both have emphasized the emergence of higher order self reproducing structures a process of hypercyclic morphogenesis ultimately encouraged by the dialogue itself

are financial development and trade openness complements or substitutes this article studies the long and short run relationships between financial development and trade openness using the pooled mean group estimator of pesaran shin and smith 1999 for unbalanced panel data for 87 countries over the 1960 2005 period our empirical results indicate that long run complementarity between financial development and trade openness coexists with short run substitutionarity between the two policy variables but when splitting the data into oecd and non oecd country groups this finding can be observed only in non oecd countries for oecd countries financial development has negligible effects on trade in addition we find nonlinearity in the relationship in that long run responses of trade decrease with financial development the article further finds coexistence of negative trade effects of financial fragility and positive trade impacts of financial depth

nonparametric and semiparametric evidence on the long run effects of inflation on growth abstract in this paper we adopt both a nonparametric and a semiparametric iv estimator to show that the relationship between inflation and output growth is non linear and that there exists a threshold level below which inflation has no effects on growth

measuring and explaining the impact of productive efficiency on economic development a limitation of most empirical cross country studies that focus on determinants of gross domestic product gdp is that they fail to distinguish explicitly between inputs used in production and conditions that facilitate production for example physical capital human capital and labor are production inputs whereas the quality of institutions macroeconomic stability and market quality are conditions that facilitate production this article takes this distinction seriously and uses a stochastic frontier approach to study factors affecting economic performance a panel data set of 71 countries for the 1980 98 periods is used to estimate a production frontier with physical capital human capital and labor as inputs the article also analyzes what drives productive efficiency using the institutional framework macroeconomic stability market quality and urbanization as possible explanatory factors urbanization turns out to be an important determinant with the rule of law inflation rate and market quality also affecting productive efficiency

inflation thresholds and the finance growth nexus abstract the robustness of the cross sectional relationship between the size of a country s financial sector and its rate of economic growth is by now well established in this article we examine whether the strength of this relationship varies with the inflation rate using five year averages of standard measures of financial development inflation and growth for 84 countries from 1960 to 1995 a series of rolling panel regressions show that there is an inflation threshold for the finance growth relationship that lies between 13 and 25 percent when inflation exceeds the threshold finance ceases to increase economic growth we also find that the level of financial depth varies inversely with inflation in low inflation environments and that disinflation is associated with a positive effect of financial depth on growth

crises and human capital accumulation this paper studies the effects of crises on human capital formation theoretically a crisis undermines total factor productivity which reduces the return to working and to accumulating physical capital if the crisis is temporary young agents will study now and work later human capital rises to test our model we rely on inflation crises as our main empirical proxy using gmm panel procedures our analysis for 86 countries in 1970 2000 confirms the positive effects of crises on human capital our main findings survive several robustness tests jel classification e31 d90 ce memoire etudie les effets des crises sur la formation de capital humain theoriquement une crise mine la productivite totale des facteurs de production ce qui reduit le rendement sur le travail et l accumulation du capital physique si la crise est temporaire les jeunes agents vont alors se mettre aux etudes et decident de travailler plus tard le capital humain s accroit pour mettre au test ce modele on etudie les crises inflationnistes comme reference a l aide des procedures d analyse de donnees de panels a la gmm l etude de 86 pays pour la periode 1970 2000 confirme les effets positifs des crises sur le capital humain les principaux resultats survivent bien a divers tests de robustesse

nonlinearity and chaos in economic models implications for policy decisions this survey paper discusses the policy implications that can be expected from the recent research on nonlinearity and chaos in economic models expected policy implications are interpreted as a driving force behind the recent proliferation of research in this area in general it appears that no new justification for policy intervention is developed in models of endogenous fluctuations although this conclusion depends in part on the definition of equilibrium when justified however policy tends to be very effective in these models copyright 1993 by royal economic society

nonlinear dependence in finnish stock returns abstract past research into the evolution of finnish stock returns focuses on modeling linear and nonlinear dependence using various arima and garch formulations respectively this paper extends the extant work by using grassberger procaccia correlations dimensions to explore the nature of the nonlinear dynamics in daily finnish stock returns during the 1970s and 1980s nonlinear behavior in both periods is evident a simple garch model removes the nonlinearity in the first decade and dramatically reduces the nonlinearity in the second period this supports the notion that finnish stock returns exhibit nonlinear dependence but that the form of dependence is not chaotic

nonlinear dynamics and stock returns simple deterministic systems are capable of generating chaotic output that mimics the output of stochastic systems for this reason algorithms have been developed to distinguish between these two alternatives these algorithms and related statistical tests are also useful in detecting the presence of nonlinear dependence in time series in this article the authors apply these procedures to stock returns and find evidence that indicates the presence of nonlinear dependence on weekly returns from the center for research in security prices value weighted index copyright 1989 by the university of chicago

structural change and financing constraints abstract in a multi industry growth model firms need external funds for productivity enhancing r d and face financing constraints the cost of research differs across industries so financing constraints hinder industry productivity growth unevenly equilibrium industry dynamics map into a differences in differences regression specification where industry growth depends on the interaction between country financial development and industry r d intensity the paper provides a framework for interpreting several empirical results that rely on industry growth data in terms of r d induced technology transfer and identifies a new channel for finance to encourage aggregate growth the reallocation of resources towards sectors with rapidly expanding technological frontiers

the emergence of chaos from classical economic growth this paper shows how fluctuations of an erratic and unstable nature can emerge from the classical deterministic economic growth process implications of the analysis would appear to be at least two first pronounced changes in the way an economy behaves need not cause us to reject our understanding of how it works second we need not seek in exogenous forces an explanation as to why behavioral patterns change and why it may be so difficult to anticipate future events from the profile of past experience

chaos significance mechanism and economic applications imagine a bargaining model say involving diplomats negotiating tariff levels or a disarmament treaty in which each party has been instructed by higher headquarters to respond to each new offer by her opposite number with a counteroffer that is to be calculated from a simple reaction function provided in advance both negotiating parties are prohibited from revealing their own reaction functions to the other if the perfectly deterministic sequence of offers and counteroffers that must emerge from these simple rules were to begin to oscillate wildly and apparently at random the negotiations could easily break down as each party not understanding the source of the problem came to suspect the other side of duplicity and sabotage yet all that may be involved as we will see is the phenomenon referred to as chaos a case that is emphatically not pathological but in which a dynamic mechanism that is very simple and deterministic yields a time path so complicated that it will pass most standard tests of randomness chaos has become a subject of great interest to specialists and nonspecialists alike besides economics it has entered the literature of geometry physics ecology and meteorology it has been written about at length in the new york times magazine and scientific american as well as technical publications this article seeks to describe what it is how it works and what it means for economics

is the business cycle characterized by deterministic chaos abstract tests are conducted on u s macroeconomic data for the presence of low dimensional deterministic chaos where deterministic chaos is defined as in grandmont s 1985 walras bowley lecture or in brock 1986 the idea is to test for evidence of endogenous instability causing the business cycle low order autoregressions are hard to reject with our methods evidence of chaos is weak but our tests may be too weak to detect it evidence of nonlinearity is present in employment 1950 i to 1983 iv unemployment 1949 i to 1982 iv monthly post war industrial production and pig iron production 1877 1937

irregular growth cycles this paper uses the familiar neoclassical theory of capital accumulation to show how complex behavior can emerge from quite simple economic structures indeed when sufficient nonlinearities and a production lag are present the interaction alone of the propensity to save and the productivity of capital can lead to growth cycles that exhibit a wandering sawtooth pattern not unlike those observed in reality these fluctuations need not converge to a cycle of any regular periodicity so they are not quasi periodic because such chaotic trajectories are unstable errors of estimation in parameters or initial conditions however tiny will accumulate rapidly into substantial errors of forecast moreover periods of erratic cycling can be interspersed with periods of more or less stable growth evidently the future behavior of a model solution cannot be anticipated from its patterns in the past a situation that seems to mimic experience apparent structural change and unpredictability is explained in the present theory by a deterministic single equation model random shocks play no role so the reader can visualize just what it is we are are talking about a noteworthy simulation is presented in figure 1 for gnp in a growth model that is described below in section iii a period of relatively rapid growth is followed by a period of cycles then remarkably for a considerable time about twenty periods apparently steady state growth occurs wandering cycles however emerge another brief period close to the steady state appears again toward the end of the series i establish conditions of savings and productivity that lead to results of this kind this analysis makes use of the mathematical theory of chaos which in the form exploited here originated in the work of edward lorenz a formal definition of chaos and sufficient conditions for chaotic trajectories were provided in a seminal paper by t y li and james yorke a survey of these related contributions is found in yorke and evelyn yorke this theory was introduced into economics by jess benhabib and myself 1981 where we showed that sequences of rational choices can be erratic when preferences depend on experience in a certain way by michael stutzer who provides a detailed analysis of trygve haavelmo s growth model by benhabib and myself 1980 in an application of the overlapping generations model and in my forthcoming study of the classical growth model

financial intermediation and economic performance historical evidence from five industrialized countries this paper examines the nature of links between the intensity of financial intermediation and economic performance that operated in the united states the united kingdom canada norway and sweden over the 1870 1929 period after describing the coevolution of the financial and real sectors in these countries vector error correction models vecms establish the quantitative importance of long run relationships among measures of financial intensity and real per capita levels of output and the monetary base granger causality tests then suggest a leading role for the intermediation variables in real sector activity while feedback effects are largely insignificant the results suggest an important role for intermediation in the rapid industrial transformations of all five countries

on nonlinear dynamics the case of the pork cycle new methods for analyzing nonlinear dynamic processes are used to evaluate the hogcorn price ratio the results present evidence of nonlinear dynamics in the pork cycle moreover while garch processes account for some of the nonlinearities the pork cycle is apparently characterized by more complex dynamic forms the empirical analysis provides some evidence of the presence of chaos in the pork cycle the results also indicate that the dynamic process generating the pork cycle is nonlinear and cannot be adequately characterized by a small number of state variables

mexico and export led growth the porfirian period revisited this paper examines mexico s development experience during the golden age of export led growth in latin america propelled by liberal reforms under the porfirio diaz regime 1877 1910 mexico s exports expanded at unprecedented rates and this is widely believed to have brought about rapid growth and far reaching structural changes to the domestic economy this paper questions this view using a new and more comprehensive data set it argues that buoyant export performance had relatively little impact on key macroeconomic and sectoral indicators the pre 1911 mexican experience is thus shown to be quite distinct from that of other large primary producing countries such as argentina and canada where rapid economic growth was largely export led a distinctive feature of the mexican economy during the 1877 1911 period was the rapid

on the complexities of complex economic dynamics complex economic nonlinear dynamics endogenously do not converge to a point a limit cycle or an explosion their study developed out of earlier studies of cybernetic catastrophic and chaotic systems complexity analysis stresses interactions among dispersed agents without a global controller tangled hierarchies adaptive learning evolution and novelty and out of equilibrium dynamics complexity methods include interacting particle systems self organized criticality and evolutionary game theory to simulate artificial stock markets and other phenomena theoretically bounded rationality replaces rational expectations complexity theory influences empirical methods and restructures policy debates

inflation output and uncertainty in the era of inflation targeting a multi economy view on causal linkages abstract this study provides cross country robust evidence on interdependencies among inflation output growth and respective uncertainties for the current era of low inflation policies we attribute the extant empirical disagreement on these relations to the fact that long sampling periods and single economies are typically considered for analysis in this study varx mgarch m models are estimated for 34 developed and emerging economies and the time period of 1990 2010 we study average granger causal effects by aggregating parameter estimates over economies the cross sectional variation of estimates serves as a means to assess the robustness of empirical findings over the entire cross section we find that both inflation and inflation uncertainty significantly reduce output growth economies with low inflation rates are particularly at risk to incur output losses from increasing inflation we also find spillover effects among uncertainty variables where the causal impact if present seems to point from the uncertainty in output to inflation uncertainty

thresholds in the finance growth nexus a cross country analysis thresholds of inflation government size trade openness and per capita income for the finance growth nexus are investigated using five year averages of standard variables for 84 countries from 1965 to 2004 the results suggest that i high inflation crowds out positive effects of financial depth on long run growth ii small government sizes hurt the finance growth nexus in low income countries while large government sizes hurt high income countries iii low levels of trade openness are sufficient for finance growth nexus in high income countries but low income countries need higher levels of trade openness for similar magnitudes of the finance growth nexus and iv catch up effects through the finance growth nexus are higher for moderate per capita income levels

the unemployment rate and the business cycle in britain an aggregate and regional analysis jones d manning n and stevenson m 1994 the unemployment rate and the business cycle in britain an aggregate and regional analysis reg studies 28 591 604 it has been suggested that if the business cycle is to be explained then its behaviour should be related to a non linear dynamic process not unlike a limit cycle the time irreversibility exhibited by post war unemployment data is not untypical of a pattern generated by such a non linear structure such a possibility could have important implications for economic policy in certain cases non linearities make forecasting extremely hazardous if not impossible as base line measurement errors cause prediction errors to accumulate at an exponential rate equally worrying is that fundamentally mistaken policy can arise when linear specifications are used to approximate non linear relationships the present paper tests for non linearities in the dynamics of regional unemployment in britain appealing to the idea of a regime switching process we u

selection dynamics asymptotic stability and adaptive behavior selection dynamics are often used to distinguish stable and unstable equilibria this is particularly useful when multiple equilibria prevent a priori comparative static analysis this paper reports an experiment designed to compare the accuracy of the myopic best response dynamic and an inertial selection dynamic the inertial selection dynamic makes more accurate predictions about the observed mutual best response outcomes

statistical inference based upon non linear science abstract this paper discusses testing for the presence of deterministic chaos and presents probems surrounding such research statistical inference methods arising from the study of non linear dynamics are presented along with research utilizing these methods the general goal of these inference methods is to test for evidence of hidden structures in economic time series data which may lead to a greater understanding of how the economy functions while evidence of significant non linear structure has been demonstrated in many economic and financial time series precisely how important these structures are to economic science is a relevant issue

law finance and firm growth we investigate how differences in legal and financial systems affect firms use of external financing to fund growth we show that in countries whose legal systems score high on an efficiency index a greater proportion of firms use long term external financing an active though not necessarily large stock market and a large banking sector are also associated with externally financed firm growth the increased reliance on external financing occurs in part because established firms in countries with well functioning institutions have lower profit rates government subsidies to industry do not increase the proportion of firms relying on external financing the corporate finance literature suggests that market imperfections caused by conflicts of interest and informational asymmetries between corporate insiders and investors constrain firms in their ability to fund investment projects the magnitude of these imperfections depends in part on the effectiveness of the legal and financial systems because these systems differ across countries the literature implies that there should exist systematic cross country differences in firms ability to obtain external capital to finance investment in this paper we examine whether the underdevelopment of legal and financial systems does prevent firms in some countries from investing in potentially profitable growth opportunities in particular we focus on the use of long term debt or external equity to fund growth see our earlier work demirgut kunt and maksimovic 1996a which compares firms financial structures in developed and developing countries and finds the greatest difference to be in the provision of long term credit we estimate a financial planning model to obtain the maximum growth rate that each firm in our thirty country sample could attain without access to long term financing we then compare these predicted growth rates to growth rates realized by firms in countries with differing degrees of development in their legal and financial systems our approach enables us to identify specific characteristics of the legal and financial systems that are associated with long term financing of firm growth thus we provide a micro level test of the hypoth

price stability and the ecb s monetary policy strategy abstract this paper focuses on the price stability objective within the framework of the single monetary policy strategy it starts by reviewing what this objective which is common to all central banks means second this paper focuses exclusively on the anchoring of short to medium term inflation expectations part 2 several measures show that this anchoring is effective a two pillar small structural macro economic model framework is used to analyze the impact that this anchoring of expectations has on the determination of the short to medium term inflation rate from this point of view observed inflation in the euro area seems to be in line with the theory and the ecb s action seems to be very effective third we focus on the other aspect of monetary stability the degree of price level uncertainty and the anchoring of inflation expectations in the medium to long term even though this assessment is more difficult than it is in the short to medium term since we only have a track record covering 6 years various indicators from the theoretical analysis paint a fairly reassuring picture of the effectiveness of the device used by the ecb

on endogenous competitive business cycles the belief that the long run equilibrium of a competitive monetary economy that does not experience any exogeneous shocks whether originating from the external environment or from policy should be modelled as a state that is stationary or perhaps growing at a constant rate seems to be deeply rooted in the mind of some economists

rational choice and erratic behaviour in this paper we show that rational choice in a stationary environment can lead to erratic behaviour when preferences depend on experience we mean by erratic behaviour choice sequences that do not converge to a long run stationary value or to any periodic pattern early investigations of the effects of experience on choice goes back to pareto see also benhabib 1979 some keynesian theories of the consumption function incorporate the effects of experience and habit formation on current levels of consumption duesenberry 1949 modigliani 1949 and brown 1952 a general model of experience dependent choice was described in day 1970 and investigated in day and kennedy 1971 while the specific issue of the existence of stable representable long run consumer demand when tastes vary endogenously has been treated by gorman 1967 pollak 1970 1976 weizsaicker 1971 mccarthy 1974 and hammond 1976 pollak gave conditions for the representability of long run choice when the equations of preference dependence are linear and utility additive hammond in a generalization of these findings provides conditions for stable representable long run choice when preferences are acyclic a condition which in essence assures convergence to a long run choice

a new database on the structure and development of the financial sector this article introduces a new database of indicators of financial structure and financial development across countries and over time the database is unique in that it combines a wide variety of indicators that measure the size activity and efficiency of financial intermediaries and markets it improves on previous efforts by presenting data on the public share of commercial banks introducing indicators of the size and activity of nonbank financial institutions and constructing measures of the size of bond and primary equity markets this article introduces a new database the first to provide comprehensive measures of the development structure and performance of the financial sector this database is the first to define and construct indicators of the size and activity of nonbank financial intermediaries such as insurance companies pension funds and non deposit money banks it is also the first to include indicators of the size of primary equity markets and primary and secondary bond markets in constructing the database authors carefully deflate measures and match stock and flow variables

manufacturing growth and financial development evidence from oecd countries recent theoretical models conjecture that the development of the financial sector is essential for economic growth we investigate this hypothesis from a time series perspective and find that financial sector gdp is cointegrated for many oecd countries not so much with manufacturing gdp but mostly with manufacturing total factor productivity moreover this relation is in some instances characterized by long run causality in the sense of granger and lin however even within this homogeneous group of countries the variety of results suggests a more complex picture than is apparent from cross sectional evidence

chaotic price dynamics increasing returns and the phillips curve abstract chaotic behavior of prices can emerge as a robust result from a very simple and standard price adjustment process consider the dynamics of prices adjusting according to supply and demand in economies with increasing returns to scale increasing returns in production implies the existence of a globally attracting set of prices containing a stable disequilibrium price within which the motion of the system is chaotic this property holds for any step size in the price adjustment process when consumption and leisure are complementary we prove that long run statistical properties of the system s behavior in this set are described by an ergodic measure price dynamics drive the system into the globally attracting region and then chaotic motion takes over on average according to this measure there is excess supply we suggest possible empirical implications of our analysis particularly with respect to the relationship between wages changes and the demand for labor the phillips curve

do investors herd in emerging stock markets evidence from the taiwanese market abstract this paper has three main contributions to the literature on investor herds first it extends investor herding studies to an emerging yet relatively sophisticated taiwanese stock market at the sector level by using firm level data second it employs different methodologies designed to test the existence of investor herds to better understand the sources of herd behavior third it discusses the implications of different herding measures for investors exposed to systematic and unsystematic risks we find that the linear model based on the cross sectional standard deviation cssd testing methodology yields no significant evidence of herding however the non linear model proposed by chang et al 2000 and the state space based models of hwang and salmon 2004 lead to consistent results indicating strong evidence of herd formation in all sectors we also find that the herding effect is more prominent during periods of market losses our results suggest limited diversification opportunities for investors in this market especially during periods of market losses when diversification is most needed further research is necessary to see whether similar findings hold for other emerging markets

competitive equilibrium cycles recently there has been a surge of interest in endogenous business cycles that arise in competitive laissez faire economies in the context of standard overlapping generations economies conditions for the existence of equilibrium cycles have been given by grandmont 1983 and by benhabib and day 1982 models of the economy with extrinsic uncertainty or sunspots that have been developed by shell 1977 and by cass and shell 1983 see also balasko 1983 can also lead to equilibrium cycles

chaos in economic models with exogenous shocks abstract we investigate the generation of chaos in economic models through exogenous shocks the perturbation is formulated as a pulse function where either values or instants of discontinuity are chaotically behaved we provide a rigorous proof of the existence of chaos in the perturbed model the analytical results are applied to kaldor kalecki type models of the aggregate economy subject to export and rainfall shocks respectively simulations are used to demonstrate the emergence and the control of chaos our results shed light on a novel source of chaos in economic models and have important implications for policy making

strategy complexity and economic rent this paper discusses important friction forces that future theories of strategy must incorporate some of these are technological and environmental but the most important ones it is argued are psychological the view is developed that strategy at its core concerns the development and testing of heuristics for high stake decisions in environments too unstable and complex to be optimized the paper especially highlights the behavioral dimension in the belief that strategies should incorporate both the rational and suboptimal aspects of human behavior the rational approach is in many ways the easier as there may be only one way to be right yet the great variety in which people and companies can err gives strategy its creative and real world challenge the tension between the rational and behavioral components is what the field of strategy should seek to exploit

long run impacts of inflation across sectors in a small sample of countries this article investigates the long run effects of inflation on economic output for 10 sectors of the economy with a sample of 7 countries the analysis is done using long run restrictions in a vector autoregression and reports long run multipliers with bootstrapped confidence bands the results suggest that some sectors seem to be affected differently than others as well as significant heterogeneity across countries the results suggest the strongest effects in the low inflation countries germany and japan as has been found in similar studies in contrast to research using growth regressions the evidence suggests a positive long run effect of inflation on output

are commodity prices chaotic we conduct tests for the presence of low dimensional chaotic structure in the futures prices of four important agricultural commodities though there is strong evidence of non linear dependence the evidence suggests that there is no long lasting chaotic structure the dimension estimates for the commodity futures series are generally much higher than would be for low dimension chaotic series our test results indicate that autoregressive conditional heteroskedasticity arch type processes with controls for seasonality and contract maturity effects explain much of the non linearity in the data we make a case that employing seasonally adjusted price series is important in obtaining robust results via some of the existing tests for chaotic structure finally maximum likelihood methodologies that are robust to the non linear dynamics lend strong support to the samuelson hypothesis of maturity effects in futures price changes 2002 elsevier science b v all rights reserved

finance and the sources of growth the authors evaluate whether the level of development in the banking sector exerts a causal impact on economic growth and its sources total factor productivity growth physical capital accumulation and private saving they use 1 a pure cross country instrumental variable estimator to extract the exogenous component of banking development and 2 a new panel technique that controls for country specific effects and endogeneity they find that banks do exert a large causal impact on total factor productivity growth which feeds through to overall gdp gross domestic product growth the long run links between banking development and both capital growth and private savings are more tenuous

the emergence of equilibrium cycles in a monetary economy with a separable utility function abstract this paper analyzes the dynamic properties of the monetary economy when money held during the period induces some utility it is shown that the price level and real money balances may have chaotic dynamic paths even if the utility function is separable in real money balances and consumption a crucial point is that a constraint on the utility of money yields the wealth effect that inflation will reduce the real value of assets hence as in the overlapping generations model the conflict between substitution and wealth effects may cause globally stable periodic orbits as well as the complicated dynamics

inflation investment and growth a money and banking approach output growth investment and the real interest rate in long run evidence tend to be negatively affected by inflation theoretically inflation acts as a human capital tax that decreases output growth and the real interest rate but increases the investment rate opposing evidence this paper resolves this puzzle by requiring exchange for investment as well as consumption inflation then decreases the investment rate and still decreases both output growth and real interest up to some moderately high rate of inflation above which increasingly low investment finally causes capital to fall relative to labour and the real interest rate to rise

statistical dynamics and economics abstract it is shown in this paper how complex economic dynamics can be characterized using the statistical or distributional theory of dynamical systems the basic concepts of the latter are summarized then applications to supply and demand adjustments in competitive markets aggregate business fluctuations and economic growth in the very long run are briefly reviewed

stabilization policy can lead to chaos stabilization policy can lead to chaos nonlinearities in economies as elsewhere can generate chaotic equilibria the presence of pareto inferior chaotic equilibria might seem reason enough to use stabilization policy to select preferable equilibria however i show that a stabilization policy with feedback can itself lead to chaotic dynamics thus the existence of nonlinearities in the economy does not by itself justify monetary or fiscal policies aimed at reducing economic instability current evidence cannot distinguish whether monetary policy stabilizes a nonlinear economy creates nonlinear dynamics in the economy or both i introduction in recent years the claim has been made that nonlinearities and self fulfilling expectations in the private economy generate economic instability that can and should be offset by government policies this instability shows up as a positive variance in the steady state of an economy that otherwise would have a steady state with zero variance and higher utility for households on the basis of such models grandmont and malgrange 1986 9 conclude that we should expect a free market economy to perform rather badly under laissez faire in addition there is a possible role for deterministic stabilization policies that would if understood and believed eliminate forecasting mistakes and the corresponding efficiency losses and would guarantee the ultimate disappearance of endogenous fluctuations the purpose of this note is to provide a simple example of stabilization policy leading to chaotic time series behavior this example is an elaboration of friedman s 1953 classic argument that with uncertain knowledge about the economy stabilization policy can increase the variance of the goal variable nonlinearities can make as much a case against stabilization policy as for it the example is ad hoc in some respects but it is based on common ingredients of many models ii a simple example interesting aspects of an economy can be summarized by the quantity equation 1 mv y assume that real income y is constant which implies that changes in nominal income are proportional to changes in the price level in one respect using the quantity equation means that the example below does not have the same force as a tight general equilibrium model of the economy without the underlying detail equation 1 is ad hoc in another respect the example below has more force an equation such as 1 commonly characterizes the general equilibrium models in which money has a significant effect on the economy hence one interpretation is that the example has some generality assume that the monetary authority targets nominal income and knows 1 that the quantity theory characterizes the long run equilibrium of the economy and 2 the level of velocity that is consistent with zero inflation v in these circumstances there is one obvious equilibrium consistent with the goal the money stock is constant and the public expects a constant money supply and zero inflation in this equilibrium nominal income can be stabilized at the target level of nominal income y the monetary authority just need set the money supply to m v 1y if the monetary authority is uncertain about the public s response to its actions one strategy is to adopt a cautious stabilization policy to support the economy s approach to the long run deterministic equilibrium one commonly proposed set of feedback rules is the proportional policies introduced by phillips 1954 in the levels such a rule for the money supply is 2 m m alpha y y sub 1 where y sub 1 is last period s nominal income and alpha is the adjustment parameter assume that private agents believe that the monetary authority eventually will accomplish its goal of setting y equal to y

the impact of financial development on energy consumption in emerging economies abstract financial development is often cited as a very important driver of economic growth in emerging economies and it is thus likely that financial development affects energy demand this study uses generalized method of moments estimation techniques to examine the impact of financial development on energy consumption in a sample of emerging countries several different measures of financial development are examined using a panel data set on 22 emerging countries covering the period 1990 2006 the empirical results show a positive and statistically significant relationship between financial development and energy consumption when financial development is measured using stock market variables like stock market capitalization to gdp stock market value traded to gdp and stock market turnover the implications of these results for energy policy are discussed

funding growth in bank based and market based financial systems evidence from firm level data the authors investigate whether firms access to external financing to fund growth differs between market based and bank based financial systems using firm level data for forty countries they compute the proportion of firms in each country that relies on external finance and examine how that proportion differs across financial systems they find that the development of a country s legal system predicts access to external finance and that stock markets and the banking system have different effects on access to external markets the development of securities markets is related more to the availability of long term financing whereas the development of the banking sector is related more to the availability of short term financing they find no evidence however that firms access to external financing is predicted by an index of the development of stock markets relative to the development of the banking system

feedback from productivity growth to r d it is shown that while the scale of r d activity affects the rate of growth of productivity in manufacturing that rate of growth in turn affects the relative cost of r d and hence its demand for relative productivity of manufactures and r d services are crucial in determining their relative prices thus success in r d and the consequent increase in manufacturing productivity may raise the relative price of r d reducing the quantity demanded formal models of this feedback process are provided and show how it can lead to oscillatory behavior an to a slowdown of the economy s long run productivity growth

the impact of financial crises and tolerance for uncertainty abstract financial crises can have severe negative effects on investment one reason for this is that financial crises increase uncertainty increasing the real option value of delaying investment in this paper we show that the negative effect of crises on investment differs significantly across countries in countries with low tolerance for uncertainty the negative effect is strong the negative effect is absent in countries that are more tolerant of uncertainty these findings are similar across different types of financial crisis they vary as predicted across type of investor asset and industry and they are not driven by uncertainty averse countries adopting more rigid institutions

credit constraints inequality and the growth gains from trade abstract this paper tests the hypothesis that in the presence of credit constraints higher wealth inequality affects negatively the growth gains from trade liberalisation variations in the growth rate of value added decomposed in the growth rate of the number of establishments and the growth rate in average size of manufacturing industries in 34 developing countries before and after trade liberalisation are used to study the effects of inequality on the difference in growth under liberalised and nonliberalised regimes the results show that the number of firms in industries with high dependence on external finance in countries with higher inequality grow significantly slower in both statistical and economic terms than in industries with low dependence on external finance in countries with lower inequality following a trade liberalisation relative to the closed economy period

the assessment the new economy the remarkable economic success of the united states in the 1990s led many observers to talk about a new economy this paper provides an overview of the main issues including faster productivity growth the stability of inflation despite very low unemployment the reduction in output volatility the role of monetary policy and the boom in the stock market the paper also considers whether or not the acceleration in productivity growth can be sustained and the possible implications for the rest of the world copyright 2002 oxford university press

nonlinear dynamics in real time equity market indices evidence from the united kingdom this paper tests for the presence of nonlinear dependence and chaos in real time returns on the u k ftse 100 index using a six month sample of about 60 000 observations since there is clear evidence of nonlinearity the authors follow other researchers in this field by applying the same tests to the residuals from a garch process fitted to the data in order to find out whether or not the nonlinearity can be explained by this type of model in the event their results suggest that garch can explain some but not all of the observed nonlinear dependence copyright 1995 by royal economic society

business environment economic agglomeration and job creation around the world based on a comprehensive worldwide firm survey this paper looks at how the business environment and economic agglomeration affect job creation holding constant conventional determinants of firm growth such as firm ownership size and age the analysis finds that economic agglomeration is most important especially modern telecommunications access to export markets concentration of economic activity in large cities and capacity agglomeration the concentration of large firms in a city although the business environment affects job growth less than agglomeration does some elements of the business environment matter such as labor flexibility unionization and local skill levels there is strong heterogeneity in job creation across firm size and age

making the most of high inflation this article examines the relationship between the real effects of inflation and its level in countries with frequent episodes of high inflation the real effects are computed as asymmetric impulse responses of output to inflation separately in the regimes with different signs of the differences between the expected inflation and the predicted output neutral inflation it is found that with the increase in inflation such effects increase in the regime with the positive sign relatively to the effects in the regime with the negative sign it is also shown that this finding is valid for most countries with high inflation episodes where inflation is greater than 4 8 for at least 25 of quarterly observations this leads to a simple policy prescription that in economies with frequent high inflation episodes anti inflationary monetary decisions are least damaging for output if undertaken in the periods when the difference between the expected and output neutral inflation is negative

financial integration productivity and capital accumulation understanding the mechanism through which nancial globalization aects eco nomic performance is crucial for evaluating the costs and bene ts of opening nancial markets this paper is a rst attempt at disentangling the eects of nancial inte gration on the two main determinants of economic performance productivity tfp and investment i provide empirical evidence from a sample of 70 countries observed between 1975 and 1999 the results for both de jure and de facto indicators suggest that nancial integration has a positive direct eect on productivity while it does not directly aect capital accumulation i also control for indirect eects of nancial globalization through nancial development and banking and currency crises while nancial integration does not systematically increase domestic nancial depth it may raise the likelyhood of banking crises though only to a minor extent yet the overall eect of nancial liberalization remains positive for productivity and negligible for investment

market instability and nonlinear dynamics the potential role of nonlinear dynamics in generating market instability is investigated using a simple market equilibrium model of the u s dairy industry the supply function reflects the nonlinear dynamics of the dairy herd as estimated by chavas and klemme it is shown that in the absence of any uncertainty an inelastic demand contributes to market instability and chaos

financial development and economic growth views and agenda this critique argues that the preponderance of theoretical reasoning and empirical evidence suggests a positive first order relationship between financial development and economic growth the body of work would push even most skeptics toward the belief that the development of financial markets and institutions is a critical and inextricable part of the growth process and away from the view that the financial system is an inconsequential sideshow responding passively to economic growth many gaps remain however and the paper highlights areas in acute need of additional research

canada and the gold standard balance of payments adjustment 1871 1913 list of tables and figures preface 1 introduction 2 the standard neoclassical specie flow mechanism 3 a new view of gold standard adjustment 4 an empirical overview 5 statistical tests of goods and asset market adjustments 6 evidence on the process of balance of payments adjustment 7 some further evidence on structure and timing 8 canada s balance viner and his critics 9 the theoretical implications of capital mobility 10 canada s balance of indebtedness reinterpretating the historical evidence 11 conclusions how the gold standard worked appendices references index

nonlinear business cycle modelling abstract literature which employs nonlinearities to explain economic fluctuations commonly called business cycles is surveyed relaxation of the linearity assumption significantly increases the range of possible dynamic solution paths and introduces the possibility that business cycles are endogenously determined the dominant post war modelling strategy has been the frisch 1933 and slutsky 1937 inspired one of developing essentially log linear economic models which produce damped cycles or monotonic damping to propagate the energy provided by repeated random or autocorrelated shocks the cycle is exogenously driven since it would die out in the absence of shocks deterministic nonstochastic nonlinear models can produce a wide range of endogenous fluctuations including stable limit cycles growth cycles and chaotic output which have the appearance of random fluctuations further the same model can produce qualitatively different outputs according to starting and parameter values if the possibility of shocks to parameters is admitted then behaviour can change abruptly following shocks evidence on the existence of nonlinearities and chaos in macroeconomic time series is assessed and alternative approaches to modelling dynamic economic development related to the work of keynes marx schumpeter and shackle are discussed their ideas have not proved readily amenable to mathematical modelling but attempts to encapsulate some of them are reviewed