CORRUPTION AND THE COMPOSITION OF TAX REVENUE IN MIDDLE EAST AND AFRICAN ECONOMIES1

Regression results from a panel of 53 Middle East and African economies suggest that corruption has a quite large negative and statistically significant impact on tax revenues, mainly reflecting the impact of corruption on tax collections from social security, and taxes on domestic goods and services and international trade transactions. Policy changes to boost tax revenues might usefully focus on changes in direct taxes and efforts to combat corruption in tax collections should focus on indirect taxes.     

IS THERE AN ASYMMETRIC BEHAVIOUR IN AFRICAN INFLATION? A NON‐LINEAR APPROACH

In this paper we test the inflation persistence hypothesis as well as model the long‐run behaviour of inflation rates in a pool of African countries using a non‐linear framework. In order to do so, we rely on unit root tests applied to non‐linear models and fractional integration. The results show that the hypothesis of inflation persistence does not hold empirically for most of the countries. In addition, the estimated models (logistic smooth transition autoregressions) are stable in the sense that the variable tends to remain in the regime (low inflation or high inflation) once reached, and changes between regimes are only achieved after a shock. The results also indicate that the effects of the shocks on inflation tend to die out; exogenous factors, i.e. supply shocks and inertia may be causing this outcome, as they play a substantial role in the determination of the inflation rates for our selected African countries.     

THE INTERTEMPORAL RELATION BETWEEN MONEY AND PRICES IN SOUTH AFRICA*

Several studies have emphasized the need to ‘filter’ the money growth and inflation data before a clear short‐run intertemporal relation between them is revealed. When a simple filtering technique is employed to changes in money and prices, the correlation of the series tends to increase as the filter used shifts to lower frequency data. The technique also reveals a statistically significant relation between money and inflation, a pattern of Granger causality that has changed with changes in the monetary and exchange rate regime during 1965‐2005, and much shorter leads/lags between money and inflation than those typically found in similar studies of the experience of developed economies.     

FOOD INFLATION IN SOUTH AFRICA: SOME IMPLICATIONS FOR ECONOMIC POLICY

This paper analyses the trends in food price movements in South Africa between 1980 and 2008. There are three main results emanating from the analysis in this paper. Firstly, food price movements have played a large role in generating inflationary episodes in South Africa. Secondly, while external influences do matter, South African food price movements are mainly due to domestic influences. This implies that national policy has an important role to play in taming domestic food price inflation. Thirdly, given the strong second round impacts, food price movements warrant special attention in monetary policymaking. Core measures of inflation that exclude food price movements may not accurately reflect the underlying inflationary pressures in the economy and could compromise the attainment of the goal of price stability.     

DETERMINANTS OF INFLATION IN GHANA: AN EMPIRICAL INVESTIGATION

This paper provides an empirical analysis of the factors accounting for inflation dynamics in Ghana using the bounds test and other econometric approaches. We find that real output, nominal exchange rate, broad money supply, nominal interest rate and fiscal deficit play a dominant role in the inflationary process in Ghana. To the extent that output growth by far has the strongest impact on inflation, targeting supply‐side constraints will help moderate price inflation. The paper concludes that inflation in Ghana is explained by a combination of structural and monetary factors consistent with prior studies.     

INFLATION TARGETING AND THE FISHER EFFECT IN SOUTH AFRICA: AN EMPIRICAL INVESTIGATION

The paper analyses the relationship between expected inflation and nominal interest rates during a period of inflation targeting in South Africa, i.e. from 2000 to 2005. Specifically, it investigates the Fisher hypothesis that nominal interest rates move one‐to‐one with expected inflation, leaving the real interest rate unaffected. The analysis distinguishes between a short‐run Fisher effect and a long‐run Fisher effect. Using cointegration and error correction models (for monthly data for the period April 2000 to July 2005), it was found that the short‐run Fisher hypothesis did not hold during the relevant period under the inflation targeting monetary policy framework in South Africa. This is attributed to a combination of the South African Reserve Bank's (SARB) control over short‐term interest rates and the effects of the monetary transmission mechanism. The long‐run Fisher hypothesis could not be confirmed in its strictest form: while changes in inflation expectations move in the same direction as the nominal long‐term interest rate. This suggests that monetary policy has an influence on the real long‐term interest rate, which has positive implications for general economic activity, thus confirming the credibility of the inflation targeting framework.     

Dynamic Spillovers in the United States: Stock Market,Housing, Uncertainty,and the Macroeconomy

In this study, we examine dynamic spillovers among the housing market, stock market, and economic policy uncertainty (EPU) in the United States in a unified empirical framework. Applying the Diebold and Yilmaz (2012) methodology on monthly data over the period 1987M1–2014M11, our findings reveal the following features. First, the transmission of various types of shocks contributes significantly to economic fluctuations in the United States. Second, spillovers show large variations over time. Third, in the wake of the global financial crisis, spillovers have been exceptionally high in historical perspective. In particular, we find large spillovers from EPU, as well as stock market and housing returns to other variables, in particular inflation, industrial production and the federal funds rate. These results illustrate the contagion from the housing and financial crisis to the real economy and the strong policy reaction to stabilize the economy.     

INFLATION IN SOUTH AFRICA: A TIME‐SERIES VIEW ACROSS SECTORS USING LONG‐RANGE DEPENDENCE

In this paper I examine the time‐series evolution of the log consumer price index series in South Africa, disaggregating the data by sectors. I examine the time period 1990m1‐2008m12, i.e. focusing on the post‐apartheid period. I used methodologies based on fractional integration using parametric and semiparametric techniques. The results indicate that the (total) inflation rate in South Africa is long memory, with an order of integration in the range (0, 0.5). The same happens with most of the data disaggregated by sectors with values of d above 1 in the log prices. Evidence of I(0) inflation is obtained in some cases for “fruits and nuts”, “vegetables” and “sugar”, and evidence of mean reversion in the log prices is only obtained in the case of “fish and other seafood”.     

THE PROPERTIES OF CYCLES IN SOUTH AFRICAN FINANCIAL VARIABLES AND THEIR RELATION TO THE BUSINESS CYCLE

The paper describes cyclicality in a range of local and international financial variables and their relation to cyclical behaviour in the South African real economy. Cycles are derived using a dating algorithm similar to that used to determine business cycle turning points and falls within the Burns‐Mitchell tradition of business cycle analysis. Co‐movement between phases in financial variables and similar phases in the business cycle are described using the concordance statistic, instead of the correlation statistic (which requires stationarity). This is a preliminary step in identifying financial variables that can act as leading indicators of economic activity.     

DEMAND FOR MONEY AND EXPENDITURE COMPONENTS IN SOUTH AFRICA: ASSESSMENT FROM UNRESTRICTED ERROR-CORRECTION MODELS

The main aim of this study is to examine empirically the long‐run relationship of money demand and its determinants in South Africa. In contrast with existing studies on the subject, the present study considers various components of real income as determinants. The disaggregated components are final consumption expenditure, expenditure on investment goods and exports. The other determinants are domestic interest rate, yield on government bonds and the exchange rate. The results confirm that the different components of real income have different impacts on the demand for money in South Africa. The presence of long‐run equilibrium relationships between the demand for real M1, M2 and M3 and their determinants is confirmed based on the results of bounds testing.     

CREDIT POLICY STRESS IN THE WEST AFRICAN ECONOMIC AND MONETARY UNION

This paper examines credit policy stress in the West African Economic and Monetary Union and provides evidence that a regional credit policy would not suit all the countries that are members of this currency union. Some countries obtain a higher volume of domestic credit when policy is conducted at a domestic level than they would in the context of a single regional policy. Furthermore, there are differences in the country‐specific reaction function to changes in the economic environment. To show the inappropriateness of a regional credit policy within the West African Economic and Monetary Union area, we compute credit stress indicators both for the countries and for the region taken as a whole. The stress indicators represent the gap between the optimal policies conducted at country and regional levels. Our study covers the period from 1980 to 2007.     

STRUCTURE, CONDUCT AND PERFORMANCE ANALYSIS OF THE SOUTH AFRICAN AUTO INSURANCE MARKET: 1980-2000

The traditional structure-conduct-performance framework makes the explicit prediction that market structure determines market conduct, performance and power. The primary goal of this study is to evaluate this prediction using the South African (SA) short-term auto insurance market. The empirical evidence shows that a link between market structure and market conduct, performance and/or power is not present. "Prices" and profits are not statistically significantly related to various sellers' concentration measure and do not follow any explicit trend over time. By construction, profits are directly related to "prices" and follow a cyclical trend, as observed in other countries. A secondary goal of this paper is to compare the findings for the US auto insurance market with the empirical evidence on the SA auto insurance market. While there are few similarities, there is an underwriting cycle in the SA auto insurance market such as is observed for the US auto insurance market.     

THE LEGACY AND CHALLENGE OF FISCAL POLICY IN SUB‐SAHARAN AFRICA1

This paper traces salient aspects of the evolution of fiscal policy in sub‐Saharan Africa since 1960 and highlights the need for further reforms to consolidate the gains of the recent past. The fiscal position of the sub‐Saharan African region as a whole has improved markedly during the past ten years, but most countries still face formidable fiscal challenges. To consolidate the progress made during the past decade and to tackle the remaining problems, sub‐Saharan African policymakers should remain firmly committed to sound fiscal policies.     

The circulating medium of exchange in colonial Pennsylvania, 1729–1775: new estimates of monetary composition, performance, and economic growth

Market transaction data are used to estimate the quantity of specie in circulation. This estimate is used to provide the first comprehensive measure of a colony's money supply and, along with data on population and prices, to retest the quantity theory of money and measure output growth using the equation of exchange. Output growth is found to depend on periodization and the extent that rising commercialization increased the velocity of circulation. Specie was becoming relatively less scarce as the Revolution approached, and movements in specie and paper currency both offset and reinforced each other depending on the period of analysis. (JEL N11, N21, E42, E51)     

HURDLE MODELS OF ALCOHOL AND TOBACCO EXPENDITURE IN SOUTH AFRICAN HOUSEHOLDS1

Estimates of participation or expenditure elasticities depend upon the assumptions made regarding the observation of zero expenditure at the household level. This research examines two single‐hurdle models across two commodities for which nearly two‐thirds of the observations are zero. The research shows that one hurdle model consistently outperforms the other, and does so for intuitively appealing reasons.     

SOUTH AFRICAN MARKET VOLATILITY,ASYMMETRY AND RETAIL INTEREST RATES PASS‐THROUGH

The purpose of this paper is to examine the interest rate transmission mechanism for South Africa as an emerging economy in a pre‐repo and repo system. It explains how the money market rate is transmitted to the retail interest rates both in the long run and short run, and tests the symmetric and asymmetric interest rate pass‐through using the error‐correction model (ECM) and the adjusted ECM‐exponential generalised autoregressive conditional heteroscedasticity (ECM‐EGARCH) (1,1)‐M methodology. This permitted the examination of the impact of interest rate volatility, along with the leverage effect. An incomplete pass‐through is found in the short run. From the entire sample period, a symmetric adjustment is found in the deposit rate, which had upward rigidity adjustment, while an asymmetric adjustment is found in the lending rate, with a downward rigidity adjustment. All the adjustments supported the collusive pricing arrangements. According to the conditional variance estimation of the ECM‐EGARCH (1,1), negative volatility impact and leverage effect are present and influential only in the symmetric deposit interest rate adjustment process in South Africa.     

GROWTH,EMPLOYMENT AND UNEMPLOYMENT IN SOUTH AFRICA

The high rate of unemployment in South Africa stands out in an otherwise vastly improved set of macroeconomic fundamentals compared with the situation in the early 1990s. One might be tempted to argue that by this single indicator alone, the government's macroeconomic policies have been a failure. This paper explains why jumping to such a conclusion would be a mistake. Annual time series data on total formal sector employment is constructed dating back to 1946. The relationship between economic growth and formal sector employment is then measured and changes in the employment coefficient over time are described. The employment coefficient was found to be relatively stable, with a long‐term average value of 0.5. It returned to this value after a short‐lived collapse in the mid‐1990s. It is concluded that the main reason for the persistently high and rising rates of unemployment in South Africa since the mid 1990s was the very large increase in the labour force and not a historically deficient growth or employment performance of the economy.     

MACROECONOMIC PERFORMANCE AND INEQUALITY: BRAZIL, 1983–94

We examine how poor macroeconomic performance, mainly in terms of high rates of inflation, affected earnings inequality in the 1980s and early 1990s in Brazil. The results, based initially on aggregate time series, and then on sub‐national panel time‐series data and analysis, show that the extreme inflation, combined with an imperfect process of financial adaptation and incomplete indexation coverage, had a regressive and significant impact on inequality. The implication of the results is that sound macroeconomic policies, which keep inflation low and stable in the long run, should be a necessary first step of any policy package implemented to alleviate inequality in Brazil.