Specification of dynamic wage-price relations in Poland (1980–1991)

This paper focuses on the analysis of wage-price relationships during the period 1980–1991 in Poland. The dynamics of wage and price series under radical structural changes are examined, as well as the impact of earlier sharp price increases. The process of wages-to-prices adjustment both in the long- and short-term is analysed. The hypothesis that the introduction of economic reform (at the beginning of 1990) would result in a tendency towards the stabilization of real wages is investigated. This is done through integration and cointegration analysis of wage and price series with special attention being paid to the problems arising from theI(2) character of the variables investigated. The concept of polynomial cointegration is applied to formulate error correction terms for the short-run model of wages. The computations have been made using quarterly data. The results reflect an inhomogeneity of the period investigated, especially the effects of the introduction of economic reform at the beginning of 1990. The nonstationarity of real wages is confirmed, but not their tendency towards stabilization.     

Wage and Price Inflation in Poland in the Period of Transition: The Cointegration Analysis

The paper focuses on the long run relationships between wages, prices and labour productivity in the Polish economy by applying recent developments in the field of multivariate cointegration analysis. We followed modeling strategy which is suggested by Greenslade et al. (1999) and present all stages of the analysis which leads to the fully economically identified system of equations representing long run relationships. The investigation is based on the quarterly data from 1992.1 to 1999.2 which covers the period of transition of the Polish economy from the centrally planned system towards the market one. Basing on the empirical results we can argue that wages (costs) were one of the main forces driving inflation in Poland during that period. Also labor productivity proved to be stimulated by the increase of the real wages. On the other hand the hypothesis concerning the relationship between wages and unemployment was rejected by the data.     

Testing for Structural Change in Cointegrated Relationships: Analysis of Price–Wages Models for Poland and Hungary

In previous studies concerning short- and long-run relationships for price–wage models, the cointegration analysis has been developed assuming the existence of a unique cointegration parametrisation. These empirical results reveal the presence of significant relationships, both in the short and in the long run, among prices, wages, labour productivity and exchange rate. In this paper we intend to develop the possibility of a more general type of cointegration, allowing for a change at an unknown time period in the sample. At this end we will consider mainly the long-run relationship among these variables using the testing procedure suggested by Gregory and Hansen (1996a,b). This permits us to consider a multivariate extension of the endogenous break univariate approach and, in the meantime, this enables us to test for cointegration in the presence of possible structural breaking cointegrated relationships under the alternative. The empirical analysis of a multivariate model for price–wage relationship both for Poland and Hungary, over the period 1970–1996, is presented and discussed.     

Oil price shocks and stock market returns of the GCC countries: empirical evidence from quantile regression analysis

This paper examines the effects of oil price shocks on the stock market returns of the Gulf Cooperation Council countries. The empirical method used is quantile regression analysis. In addition, we allow for structural breaks and asymmetry by differentiating between positive and negative oil price changes. Unlike OLS analysis, quantile regression allows the coefficient estimates to vary throughout the distribution of the dependent variable, which provides a complete picture of the relationship between the explanatory variables and the dependent variable. Our results suggest that the coefficient estimates have not been constant throughout the distribution of stock returns; that oil price shocks have asymmetrical effects on stock returns; and that the effects of oil price shocks on stock market returns are affected by stock market conditions. Overall, the results suggest that rising oil prices increase stock returns only when stock markets are bullish (high quantiles) and normal (medium quantiles), and that falling oil prices lower stock returns only when stock markets are bearish (low quantiles) and normal (medium quantiles). This suggests that oil and stock markets are more likely to boom together or crash together.     

Oil price changes and wages: a nonlinear and asymmetric approach

Economic Change and Restructuring - We assess the relationship between oil prices and wages in 15 top oil producing counties in the USA using data between 2001 and 2018. The analysis is conducted...     

Price-wage nexus and the role of a tax system

The presented study was aimed to test empirically major economic hypotheses dealing with long-term relationships between wages, producer prices, prices of consumer goods and services, the consumer price index, productivity of labour, unemployment and payroll expenses other than wages themselves. It is particularly important for this approach to distinguish between net wages shaping employees’ decisions and gross wages driving employers’ decisions. Because the variables are generated by non-stationary stochastic processes integrated of order 1 and 2, the analytical tool applied was a vector equilibrium correction model, VEqCM. The findings demonstrate that prices and payroll expenses are the major sources of shocks in the system in question. Wages and prices (particularly producer prices) are the most sensitive to this type of stochastic trends. In the Polish economy prices are integrated of order two, so they can be effectively influenced by anti-inflationary policy.     

Structural changes in Central and Eastern European economies: breaking news or breaking the ice?

This paper extends the sparse existing literature on structural breaks in emerging markets in Central and Eastern Europe by analyzing structural breaks in the intercept, trend and variance of monthly key macroeconomic variables, such as industrial production, inflation, monetary aggregates, nominal exchange rates and series related to the labor market. Using the Bayesian procedure developed by Wang and Zivot (2000, A Bayesian time series model of multiple structural changes in level, trend and variance. J Busi Econom 18:374–386), we provide strong evidence in favor of multiple structural breaks in the series under study. As most of the existing empirical literature on European emerging markets does not sufficiently deal with structural breaks, the instability found in this paper has important implications for macro-econometric modeling as well as the ensuing recommendations for economic policy.     

Testing Integration of Macroeconomic Time Series in Transitional Socialist Economies. A Modification of Perron Test

The presence of structural breaks reduces the power of integration tests. A number of methods were suggested to improve the statistical properties of integration tests in the presence of structural breaks. The most known are Perron tests, which allow to test for the level of integration of time series with one structural break. Perron tests allow for two types of structural breaks: additive outlier an innovative outlier. These tests are, however, not very useful in testing the level of integration of macroeconomic time series in countries in transition from centrally-planned to market economy. In such case one should expect two structural breaks to affect the time series: one at the beginning and one at the end of the transformation process. Test that allows for two additive outlier type structural breaks in time series is developed in this paper. This test has superior power as compared to standard Dickey-Fuller and Perron tests. This paper provides asymptotic distribution as well as finite sample properties of proposed test. Therefore practitioners receive a reliable tool for analyzing macroeconomic processes in transitional economies.     

CAUSALITY,ECONOMIC CONDITIONS,AND BURGLARY*

This study examines the extent to which the symmetry-asymmetry distinction and offense aggregation bias obfuscate the relationship between economic conditions and crime. Specifically, we use ARIMA techniques to assess the impact of incremental and abrupt changes in oil prices on counts of total, commercial, and residential burglaries in Oklahoma City, Oklahoma. Taken together, the bivariate and interrupted time series analyses indicate that the causal impact of oil prices on burglary is asymmetrical and varies across the two subcategories of breaking and entering.     

Anticompetitive Employment

Scholars, antitrust agencies, and policy makers have historically paid little attention to anticompetitive practices in labor markets. This was largely due a misconception that antitrust law is meant to govern conventional markets in which goods and services trade, rather than govern labor markets. Antitrust law may also offer a poor remedy to redress employers who enter no-poaching agreements or otherwise impair competition. The primary tension involves antitrust's purpose, which is to promote “consumer welfare.” To identify whether conduct eroded consumer welfare, courts tend to scrutinize whether prices increased. But here, lessening wages can enable firms to sell goods at cheaper prices, benefiting consumers. Another issue is that the typical restraint affects only a smattering of workers instead of lessening wages throughout the greater market. This article uses empirical analyses to show that antitrust should promote labor's welfare as it does consumer welfare, and it argues that enforcement must condemn labor cartels as per se illegal. The research demonstrates that labor cartels are more pernicious than restraints in product markets, as employers can lessen wages with less effort than in product markets. Antitrust should even proscribe no-poaching agreements formed for a legitimate purpose (e.g., to protect trade secrets) because employers could have achieved the same goals using less coercive means; the noncompete agreement, at least, provides labor with a semblance of notice and bargaining power without drawing antitrust scrutiny. The prohibition of labor cartels would thus promote competition and consumer welfare, especially in minimum wage labor markets.     

Real interest rate persistence in South Africa: evidence and implications

The real interest rate is a very important variable in the transmission of monetary policy. It features in vast majority of financial and macroeconomic models. Though the theoretical importance of the real interest rate has generated a sizable literature that examines its long-run properties, surprisingly, there does not exist any study that delves into this issue for South Africa. Given this, using quarterly data (1960:Q2-2010:Q4) for South Africa, our paper endeavors to analyze the long-run properties of the ex post real rate by using tests of unit root, cointegration, fractional integration and structural breaks. In addition, we also analyze whether monetary shocks contribute to fluctuations in the real interest rate based on test of structural breaks of the rate of inflation, as well as, Bayesian change point analysis. Based on the tests conducted, we conclude that the South African EPPR can be best viewed as a very persistent but ultimately mean-reverting process. Also, the persistence in the real interest rate can be tentatively considered as a monetary phenomenon.     

Exchange rate, inflation and unemployment in East European economies: the case of Poland and Hungary*

The aim of the paper is to model the impact of exchange rate on both inflation and unemployment variables in economies which are characterized by important structural changes, i.e. a transition phase moving from centralized economies towards market economies. This phenomenon, which is common to the East European countries, stressed different effects both for what concerns the behaviour of economic agents and for what concerns fiscal and monetary measures adopted by governments and aiming to keep under control the inflation–unemployment trade off. Time series relationships between these variables are investigated within an econometric model. Economic theory and the available data on the hypothetically relevant variables, along with the consideration of the main facts occurred in the period under study, characterize our information set. It is found that single equation analysis yields inefficient inference relative to the whole system analysis, and important structural changes are detected which reflect possible breaks in the structure of the economic system along with a change in economic policy.     

我国资产价格"货币现象"的实证分析

借鉴弗里德曼的经典观点,可将货币数量影响资产价格波动的现象称为货币现象。在此基础上综合运用Granger因果检验、Johansen协整和脉冲响应函数等方法,对M/GDP影响房屋销售价格指数和上证综指进行了实证分析。结果显示,超额货币是房地产价格的Granger原因,且二者存在协整关系,超额货币对于推动房地产价格的上涨发挥了重要作用,表明我国房市存在货币现象。从股市来看,长期的货币现象并不存在,但自2006年第4季度以来超额货币存量与股指的相关性显著增强。     

我国证券市场结构突变与波动性实证研究

重大事件的发生会使证券市场波动率发生结构突变.通过修正ICSS算法检验,可以发现我国证券市场波动存在明显的结构变化.将结构突变因素加入波动率模型进行比较后,可以发现含结构突变的波动率模型能更准确地刻画波动率特征.再分别按照结构突变发生的时间点分割样本区间与构造虚拟变量两种方法,对含结构突变的波动率模型进行比较研究的结果表明:构造虚拟变量方法对我国证券市场的波动率建模能取得较好的统计效果.     

Is devaluation contractionary? Empirical evidence for Pakistan

The paper examines the effect of real devaluation on economic growth. In the empirical model we include few other theoretically justified variables e.g., money supply, foreign remittances, and government spending as they appear relevant for Pakistan. The ADF unit root test is used for stationarity of the series. Also, to capture possible structural breaks due to currency regimes shifts, the Saikkonen and Lütkepohl unit root test is used. We apply the ARDL bounds testing approach to cointegration to explore a long run relation among the series; and the variance decomposition method and impulse response function for the direction of causality. The findings affirm cointegrating relation among the series. Real devaluation exerts contractionary effect on economic growth. The results should help in formulating a comprehensive trade policy including the use of competitive devaluation as a tool to correct balance of payments problems.     

LOCATING THE VANGUARD IN RISING AND FALLING HOMICIDE RATES ACROSS U.S. CITIES*

This research examines trends in U.S. homicide rates at the city level during the so‐called homicide epidemic in the latter decades of the 20th century. Using spline regression techniques to locate structural breaks in city‐level time series, we model the true trends of homicide rates to identify those cities that exhibited a meaningful boom and bust cycle. We then use Tobit regressions for all cities at risk of experiencing a cycle to estimate unbiased effects of theoretically important predictors on the timing of the phase changes. Our findings reveal that larger cities were more likely to experience an epidemic‐like pattern, and that densely populated cities characterized by high levels of deprivation tended to exhibit the rise and fall in homicide rates earlier than other cities.     

Oil prices and economic activity in Greece

The paper studies the relationship between oil prices and economic activity in Greece during the period 1982:1–2008:8. Different empirical methods are used to estimate whether oil price changes affect asymmetrically the economic activity. A regime-switching model (RS-R) and a threshold regression modeling (TA-R) are applied which have the advantage to capture the dependence structure of the series both in terms of constant and variance. The empirical evidence suggests that the degree of negative correlation between oil prices and economic activity strengths during periods of rapid oil price changes and high oil price change volatility.     

An empirical testing of informational efficiency in Bangladesh capital market

We investigate how efficiently the stock market participants incorporate the information contained in money supply changes into stock prices in an emerging economy like Bangladesh. Of particular interest is to test how the changes in monetary aggregates directly affect the stock prices through asset changes and indirectly through their effects on real economic activity. We have considered the monthly series of the real stock returns (P) and examine the relationship between stock returns and monetary aggregates from 1980 to 2008. We also include the exchange rate of US dollar against Bangladeshi Taka and industrial production index. The presence of cointegration between stock prices and monetary aggregates indicate long-run predictability of the Bangladesh stock market. The short-run dynamics between monetary aggregates and real stock return, relied on theoretically motivated long-run restrictions, are analyzed using an empirical structural VAR model. The dynamic response of the real stock returns to changes in macroeconomic variables (such as broad money supply, exchange rates), particularly its lagged responses to real economic activity generates inefficiency in the Dhaka Stock Exchange. The findings of this article indicate that informational inefficiency exists in the stock market of Bangladesh due to the presence of unidirectional causality. To be efficient, the infrastructure of the SEC should be modernized, revaluation of the net asset value of the companies should be audited by the affiliated firms of the SEC, demutualization should be done as early as possible, private placement, issue of preference share and book building methods must be under rule based. Insider trading should be strictly prohibited.     

Impacts of realized volatility of oil price over foreign trade related activities in Turkey

Since 1973 oil crises, especially, small open economies have considered sudden and highly volatile movements in currencies and current account deficits. Oil prices have been breaking new historical price records since second quarter of 2014, especially from last quarter of 2015 to first quarter of 2016, which have gradually put pressure on political, geographical, and currencies risks in the Middle East and Eastern European countries. Similarly, because Turkish economy has been experienced serious current account deficit problems especially since 2002, the effect of decline in oil prices and increased volatility has been worth of investigating. For 2003M1–2015M7 period, export–import ratio, real exchange rate index, realized volatility in oil prices calculated based on monthly OPEC basket price, industrial production index, and consumer price index were collected to analyze these effects and causality relationship among these variables. Test results of unit root test with and without structural break, ARDL bound test and co-integration test were sorted out among variables. Initial result is that price volatility increases and total import decreases more sharply than total export after the decline in oil prices; thus, export–import ratio increases. Another is that there is a negative relationship between real exchange rate index and export–import ratio for real economy because of low oil substituents. As expected, inflation has an adverse effect on foreign trade ratio. Consequently, because of lower pressure of energy-induced inflation, economy policy makers will have some ability to change their priorities from inflation issue to other structural problems.     

Crime,unemployment, and social structures of accumulation: An inquiry into historical contingency

This article examines whether prior inconsistency in findings about the impact of unemployment on crime is the result of historical contingency caused by changes in the social structures of accumulation (SSAs) associated with the development of twentieth-century U.S. capitalism. We explore this question by comparing the relationship between official measures of unemployment and the crimes of burglary, robbery, assault, and homicide during four phases of recent U.S. economic development identified by SSA theorists: economic exploration from 1933 to 1947, economic consolidation from 1948 to 1966, economic decay from 1967 to 1979, and a new period of exploration from 1980 to 1992. We propose that the unemployment-crime (U-C) relationship is shaped not merely by the fact of unemployment, but rather by its social meaning within developmental stages of social structures of accumulation. Time-series analysis of the U-C relationship within each SSA stage from 1933 to 1992 supports our hypothesis that periods of structural unemployment will be characterized by a stronger U-C relationship than those in which unemployment is primarily frictional. We then validate the periodization of shifts in the U-C relationship suggested by SSA theory by applying time-varying parameter analysis to the entire series from 1933 to 1992. On the basis of these findings we conclude that crime control policies and future research into the relationship between unemployment and crime should take into consideration the historically contingent nature of the U-C relationship.