Revisiting the Exchange Rate Pass‐Through to Inflation in Africa’s Two Largest Economies: Nigeria and South Africa

This paper revisits the exchange rate pass‐through (ERPT) to inflation in Nigeria and South Africa by incorporating structural breaks and using time series variables, namely the consumer price index, nominal effective exchange rate, gross domestic product, and crude oil price. Based on the Maki cointegration test and a flexible estimation approach of the Autoregressive Distributed Lag (ARDL) model, our empirical evidence suggests that the long‐ and short‐run ERPT to inflation is complete for Nigeria, while for South Africa it is incomplete both in the long run and short run. This result indicates that prices are stickier in South Africa compared to Nigeria. The comparison between Nigeria and South Africa confirms the role of inflation targeting and central bank credibility on the ERPT. The results divulge further that output growth in Nigeria increases inflation in the long run while it is anti‐inflationary in the short run. For South Africa, the effect of output growth is negatively insignificant. In addition, the long‐run effect of oil price is negative and significant for Nigeria, while for South Africa the short‐run effect of oil price is positive and significant. Therefore, the findings of this paper will assist the monetary authorities to achieve monetary policy objectives.     

THE ROLE OF COMMODITY PRICES IN MACROECONOMIC POLICY IN SOUTH AFRICA

This paper examines whether commodity prices can be used as signal for informing macroeconomic policy in South Africa using the new approach for testing Granger causality developed by Toda and Yamamoto (1995 ). Evidence of causality from average gold price to interest rate, money, exchange rate and the consumer price index was observed. Again, evidence of causality was observed from metals price index to interest rate, money and exchange rate. The results suggest there is merit in using South Africa's average gold price and the metals price index of the International Monetary Fund as informational variables in setting monetary policy.     

COPING WITH INFLATION AND EXCHANGE RATE SHOCKS IN THE SOUTH AFRICAN ECONOMY

Over the past ten years South Africa has moved to an increasingly open economy, characterised by a (relatively) low inflation and large and unpredictable movements in the prices of financial assets. One of these asset prices is the value of the South African currency. This volatility in the exchange rate has a direct impact on inflation. Using the interest rate as operational target, a central bank might ignore or underestimate the exchange rate transmission mechanism through which the economy is influenced. This paper proposes a Monetary Conditions Index for South Africa that can be used as a policy rule or simply as an important information variable in conducting monetary policy under an inflation‐targeting regime with a volatile exchange rate.     

Supply‐leading versus Demand‐following Hypothesis: Empirical Evidence from Three SSA Countries

Abstract: This study investigates empirically the direction of causality between financial development and economic growth in three sub‐Saharan African countries — Kenya, South Africa and Tanzania. The study seeks to answer one critical question: Does financial development in sub‐Saharan African countries exhibit a supply‐leading or demand‐following response? Using three proxies of financial development against real GDP per capita (a proxy for economic growth), the study finds that the direction of causality between financial development and economic growth is sensitive to the choice of measurement for financial development. In addition, the strength and clarity of the causality evidence is found to vary from country to country and over time. On balance, a demand‐following response is found to be stronger in Kenya and South Africa, whilst in Tanzania a supply‐leading response is found to be dominant. The study therefore recommends that for Kenya and South Africa the real sector of the economy should be developed further in order to sustain the development of the financial sector. However, for Tanzania, there is need for further development of the financial sector in order to make the economy more monetized.     

China's economic development: does exchange rate and FDI nexus matter?

This study aims to investigate the relationship between China's exchange rate, foreign direct investment (FDI) inflows, and economic development. We applied the bound testing approach on aggregate level data from 1981 to 2013. The results showed that the Chinese economy benefitted from a lower exchange rate over this period, and that there was a direct link between FDI inflows and economic development on an aggregate level both in the long and short run. The results of the Granger causality test identified a long‐ and short‐run association among these variables. The GMM estimations with dummies for financial crises and RMB exchange rate policy fluctuations also confirmed the growth enhancing impact of the exchange rate and FDI inflows. To promote sustainable economic development in the future, China should focus on improving the levels of domestic investment and human capital, as well as supervising the level of openness and capital controls.     

CAPITAL CONTROLS,TWO‐TIERED EXCHANGE RATE SYSTEMS AND EXCHANGE RATE POLICY: THE SOUTH AFRICAN EXPERIENCE

South Africa's 40 years of experience with capital controls on residents and non‐residents (1961‐2001) reads like a collection of examples of perverse unanticipated effects of legislation and regulation. We show that the presence of capital controls on residents and non‐residents enabled the South African Reserve Bank to target domestic interest rates (and or the exchange rate) via interventions in the (commercial) foreign exchange market. This provides an early rationale for anchoring SA monetary policy via the exchange rate, rather than via domestic interest rates. This suggests not only that the capital controls themselves exhibited substantial institutional inertia, but that this same institutional inertia also applied to the monetary policy regime. A plausible reason for this is that for most of the 20th century in South Africa. (partial) capital controls and exchange rate based monetary policies were like Siamese twins – almost impossible to separate.     

Do Monetary Policy Announcements Affect Exchange Rate Returns and Volatility of Returns? Some Evidence from High‐Frequency Intra‐Day South African Data

This paper examines the temporal effect of domestic monetary policy surprises on both returns and volatility of returns of the South African rand/U.S. dollar exchange rate. The analysis in this “event study” proceeds using intra‐day minute‐by‐minute exchange rate data, repo rate data from the South African Reserve Bank's scheduled monetary policy announcements, and market consensus repo rate forecasts. A carefully selected sample over the period August 2003 to November 2017 ensures that the change in monetary policy is exogenous to the exchange rate. We find statistically and economically significant responses in intra‐day high‐frequency South African rand/U.S. dollar exchange rate returns and volatility of exchange rate returns to domestic interest rate surprises, but anticipated changes have no bearing on exchange rate returns and their volatility. The empirical results also indicate that there is an instantaneous response of the rand/dollar exchange rate to monetary policy surprises and that monetary policy news is an important determinant of the exchange rate until at least 42 minutes after the pronouncement – suggesting a high degree of market “efficiency” in its mechanical sense (although not necessarily in the deeper economic‐informational sense) in processing this information. Essentially, the asymmetric GARCH results exhibit no leverage effects – positive and negative information shocks have symmetric effects on conditional variance.     

The Determinants of Time‐Varying Exchange Rate Pass‐Through in South Africa

The pass‐through of shifts in the rand exchange rate to consumer price inflation has been well documented for South Africa. Although estimates of the absolute level of pass‐through vary, some studies document a decline in pass‐through over time. In order to better illuminate the policy implications of pass‐through, this paper seeks to add to the literature by decomposing pass‐through into a number of time‐varying impulses. This has the advantage of providing deeper insights of pass‐through over time and across various monetary policy regimes. We then analyse the determinants of time‐varying pass‐through. Our results confirm that pass‐through has declined over time but is subject to a stable and low inflation environment. We also show that a volatile exchange rate leads to higher pass‐through.     

The relationship between budget deficit and interest rates in South Africa: some econometric results

This article investigates the budget deficit–interest rate relationships in South Africa, using two econometric methods: the London School and the Granger‐causality methods. The results suggest that budget deficits have no effect on interest rates in South Africa. The causality results reinforce this finding by indicating that budget deficit and interest rates in this country are independent.     

Causal Relationship between Domestic Savings and Economic Growth: Evidence from Seven African Countries

This paper utilizes cointegration and the vector error‐correction model (VECM) to explore the causal relationship between economic growth and growth rate of domestic savings for Congo, Côte d’Ivoire, Ghana, Kenya, South Africa, and Zambia. Specifically, three analyses were undertaken. First, the time series properties of economic growth and domestic savings were ascertained with the help of the augmented Dickey–Fuller unit root procedure. Second, the long‐run relationship between economic growth and growth rate of domestic savings was examined in the context of the Johansen and Juselius (1990) framework. Finally, a Granger‐causality test was undertaken to determine the direction of causality between economic growth and growth rate of domestic savings. The results indicate one order of integration [I(1)] for each of the series. The results of the cointegration tests suggest that there is a long‐run relationship between economic growth and growth rate of savings. The results from the Granger‐causality tests indicate that contrary to the conventional wisdom, economic growth prima facie causes growth rate of domestic savings for most of the countries under consideration.     

Sudden Stops and Current Account Reversals: Potential Macroeconomic Consequences for South Africa

South Africa is one of the emerging market countries that have received a relatively large amount of foreign capital since the mid‐2000s. In South Africa's case, these inflows were partly used to build the country's foreign exchange reserves, but more particularly to finance continued large current account deficits. During the course of the past two years, however, adverse domestic political developments, combined with the potential negative impacts of the unwinding of quantitative easing policies and the normalising of monetary policy in the United States on emerging markets in general, has raised the spectre of a sharp slowdown in foreign capital flows to South Africa and an associated reversal of the current deficit. This paper explores the potential impact of such a development on macroeconomic conditions in South Africa. The analysis consists of macroeconometric model‐based alternative scenarios backed up by both the international evidence on the impact of such events and South Africa's own history.     

Economic research and economic growth: Evidence from East Asian economies

Based upon page counts of articles published in 60 quality economics journals, the role of economic research is examined for five East Asian economies. In Hong Kong, causality runs bi-directionally between research productivity and economic growth; in Japan, the causal effects tend to be one direction from economic growth to research publications; in Korea and Taiwan, causality runs the other way around from publications to growth; and in Singapore, the causal effects are small and insignificant. Socioeconomic differences in each economy help to explain the various causal directions found.     

THE ECONOMICS OF SUICIDE IN SOUTH AFRICA

This study investigates the economics of suicide in South Africa using the Mortality and Causes of Death data from death notification as well as regional economic data for the 2006‐2008 period. Using an inflation rate that varies by month and across province of residence as a proxy for economic performance, the results indicate a negative relationship between inflation and suicide, suggesting that suicides are countercyclical. When controlling for month and province fixed effects, however, the inflation coefficient, albeit remaining negative, is no longer significant, except in the female sample. Suicide is more prevalent among younger individuals, while the greatest proportion of suicide is seen among men. Suicides also exhibit a strong seasonal variation, with peaks in spring and summer, with December having the highest suicide prevalence. The overall results indicate a negative but insignificant relationship between economic performance and suicide in South Africa, with socio‐economic differences and individual characteristics accounting for most of the variation in suicide.     

THE RELATIONSHIP BETWEEN TOURISM AND TRADE IN SOUTH AFRICA

This article explores the relationship between tourist arrivals and trade in South Africa. Two analyses were conducted – a panel data analysis, which included tourism and trade data of 40 countries with South Africa, and a time‐series analysis that involved South Africa's main tourism and trade partners. Cointegration tests, Granger causality and Block exogeneity tests were used to investigate the nature of the relationship. The results of the panel data analysis show that for South Africa as a whole, there is indeed a long‐term relationship between tourist arrivals and trade, and that bidirectional causality exists. The results for the country case studies are mixed, although the evidence is stronger for the hypothesis that tourism causes trade.     

EXCHANGE RATE PASS‐THROUGH TO IMPORT PRICES IN SOUTH AFRICA: IS THERE ASYMMETRY?1

This paper examines the magnitude and speed of exchange rate pass‐through (ERPT) to import prices in South Africa. It further explores whether the direction and size of changes in the exchange rate have different pass‐through effects on import prices, i.e. whether the exchange rate pass‐through is symmetric or asymmetric. The findings of the study suggest that ERPT in South Africa is incomplete but relatively high. Furthermore, ERPT is found to be higher in periods of rand depreciation than appreciation, which supports the binding quantity constraint theory. There is also evidence to suggest that pass‐through is slightly higher in periods of small changes than large changes in the exchange rate in harmony with the menu cost theory when the invoices are denominated in the exporters' currency.     

Banking Sector Development and Energy Consumption in Nigeria: Exploring the Causal Relationship and its Implications

This study examines the causal relationship between banking sector development and energy consumption in Nigeria over the period 1971–2013 incorporating crude oil price and indicators of economic performance. An autoregressive distributed lag bounds testing approach to cointegration provides evidence of long‐run relationship among the variables. The long‐run and short‐run estimates suggest that a non‐linear inverted U‐shaped relationship exists between banking sector development and energy consumption in Nigeria, indicating that initially, energy consumption increases as the banking sector develops and then declines as the banking sector matures to generate efficiency in energy consumption. In addition, this study explores the direction of causality between the variables using the Toda–Yamamoto Granger causality test procedure. The results suggest that a unidirectional causality runs from crude oil price to banking sector development, from banking sector development to energy consumption and from energy consumption to economic growth. It may therefore be necessary for policy makers in Nigeria to incorporate banking sector development in the energy and sustainable economic policies.     

Electricity consumption and economic development in Asia: new data and new methods

This study uses a new statistical technique, Panel Analysis of Nonstationarity in Idiosyncratic and Common Components (PANIC) analysis, to examine causal linkages between electricity consumption and economic development in 12 Asian countries over the period 1971–2011. The findings indicate that there was no long‐run equilibrium relationship between electricity consumption and economic development in the region as a whole. More importantly, the causality tests detected unidirectional causality from economic development to electricity consumption for East Asian countries and a reverse causal relationship for South Asian countries. These findings have important policy implications for sustainable energy consumption.     

Public Revenue‐Expenditure Nexus in South Africa: Are there Asymmetries?

This paper re‐examines the government revenue and expenditure relationship in South Africa using Enders and Siklos' Threshold adjustment and Granger causality tests. The paper allows for structural breaks in the unit root and cointegration tests. The results indicate the absence of any asymmetries in both the threshold autoregression and momentum threshold autoregression specifications of adjustments in the South African's budgeting process. The estimated symmetric error‐correction models provide support for the fiscal synchronization hypothesis of government revenues and expenditures for long‐run and short‐run dynamic equilibrium. These findings indicate that the South African fiscal authorities should try to maintain or even improve the control of their fiscal policy instruments to sustain the prudent budgetary process.     

REVISITING THE EFFICIENT MARKET HYPOTHESIS FOR AFRICAN COUNTRIES: PANEL SURKSS TEST WITH A FOURIER FUNCTION

This study applies the panel seeming unrelated regression of the Kapetanios‐Shin‐Snell (SURKSS) test with a Fourier function to investigate the time‐series properties of stock prices in five African countries (i.e. Egypt, Kenya, Morocco, South Africa and Tunisia) over the period of January 2000–April 2011. The empirical results from the univariate unit root and panel‐based unit root tests indicate that unit root hypothesis can not be rejected for these five countries under study. However, results from the panel SURKSS test with a Fourier function indicate that unit root hypothesis can be rejected for Egypt and Morocco, two countries under study. Our results indicate that the weak‐form efficient market hypothesis holds in the other three countries, namely, Kenya, South Africa and Tunisia.     

SOUTH AFRICA AND THE NEW PARTNERSHIP FOR AFRICA'S DEVELOPMENT: ECONOMIC SPIN-OFFS AND LINKAGES

The New Partnership for Africa's Development (NEPAD) is a concerted effort by Africa's political leaders to develop a comprehensive and integrated strategic policy framework to raise current levels of socio‐economic development and reduce high levels of poverty across the African continent. The NEPAD framework recognises the need for African countries to pool their resources together in order to enhance regional development and economic integration. To this end, NEPAD emphasises capacity building and also seeks to solicit and disburse funds towards infrastructural development programmes and poverty alleviation projects, among others. South Africa's involvement with the rest of Africa has increased significantly since 1994. Trade exports, foreign direct investment (both market and resource‐seeking in nature) and public‐private partnerships have mushroomed in many parts of the continent. Many South African firms are providing the financial impetus for the infrastructural development and rehabilitation of African economies. This paper discusses salient economic linkages between South Africa and the rest of Africa within the framework of NEPAD. South Africa is the economic hub of sub‐Saharan Africa (and indeed of the African continent), with significant agricultural, manufacturing and services capacity. South African firms have invested in the development of a number of sectors in the rest of Africa, taking advantage of the new investment incentives offered by the NEPAD framework. The target sectors range from mining, the hospitality industry, engineering and construction, finance to telecommunications. These investments and economic involvements are crucial to the development of African countries and the relevant sectors that are important for the realisation of some of the objectives of NEPAD.