FORECASTING THE SOUTH AFRICAN ECONOMY WITH VARs AND VECMs

The paper develops a Bayesian Vector Error Correction Model (BVECM) of the South African economy for the period 1970:1‐2000:4 and forecasts GDP, consumption, investment, short and long term interest rates, and the CPI. We find that a tight prior produces relatively more accurate forecasts than a loose one. The out‐of‐sample‐forecast accuracy resulting from the BVECM is compared with those generated from the Classical variant of the VAR and VECM and the Bayesian VAR. The BVECM is found to produce the most accurate out of sample forecasts. It also correctly predicts the direction of change in the chosen macroeconomic indicators.     

ON THE RAND: DETERMINANTS OF THE SOUTH AFRICAN EXCHANGE RATE

This paper is an econometric investigation of the determinants of the real value of the South African rand over the period 1984‐2007. The results show a relatively good fit. As always with exchange rate equations, there is substantial weight on the lagged exchange rate, which can be attributed to a momentum component. Nevertheless, economic fundamentals are significant and important. This is especially true of an index of the real prices of South African mineral commodities, which even drives out real income as a significant determinant. An implication is that the 2003‐2006 real appreciation of the rand can be attributed to the Dutch Disease. In other respects, the rand behaves like currencies of industrialised countries with well‐developed financial markets. In particular, high South African interest rates raise international demand for the rand and lead to real appreciation, controlling also for a forward‐looking measure of expected inflation and a measure of default risk or country risk.     

FORECASTING SOUTH AFRICAN INFLATION

This paper looks at what variables are useful for forecasting inflation starting in 1990. I show that the output gap, a measure of real economic conditions, does seem to provide useful information for forecasting inflation. This is good news for the Reserve Bank, since the primary way that the Reserve Bank tries to affect future inflation is through real economic conditions. In addition, short‐term interest rates and import price inflation also seem to provide useful information. The most accurate of these forecasts suggests a root mean square forecast error of 1–2 per cent for 1‐year ahead inflation, which is within the Reserve Bank's current target range.     

A BVAR MODEL FOR THE SOUTH AFRICAN ECONOMY

The paper develops a Bayesian vector autoregressive (BVAR) model of the South African economy for the period of 1970:1‐2000:4 and forecasts GDP, consumption, investment, short‐term and long term interest rates, and the CPI. We find that a tight prior produces relatively more accurate forecasts than a loose one. The out‐of‐sample‐forecast accuracy resulting from the BVAR model is compared with the same generated from the univariate and unrestricted VAR models. The BVAR model is found to produce the most accurate out of sample forecasts. The same is also capable of correctly predicting the direction of change in the chosen macroeconomic indicators.     

EFFECTS OF THE REAL EXCHANGE RATE ON OUTPUT AND INFLATION: EVIDENCE FROM TURKEY

This paper assesses the effects of real depreciation on the economic performance of Turkey by considering quarterly data from 1987:I to 2001:III. The empirical evidence suggests that, contrary to classical wisdom, the real depreciations are contractionary, even when external factors like world interest rates, international trade, and capital flows are controlled. Moreover, the results obtained from the analyses indicate that real exchange rate depreciations are inflationary.     

HOW EXPOSED IS THE SOUTH AFRICAN ECONOMY TO INTERNATIONAL TRADE?

Following the policies implemented during the 1990s, the South African economy has become more globalised. This is particularly the case as far as international trade is concerned. The implementation of trade reforms, in some cases faster than WTO commitments, has increased the exposure of the South African economy to international trade. Trade in intermediate inputs increases the external orientation of an industry and hence increases the economy's exposure to trade. This in effect means that the economy is more open to external trade shocks than is conveyed by the traditional openness measure which considers only the trade in final products. This paper uses a measure proposed by Campa and Goldberg (1997) to estimate the exposure to trade and finds that around 79 per cent of output in 2000 was accounted for by industries that became more exposed to international trade. Further, domestic production has become more reliant on imported inputs with around 60 per cent of South Africa's GDP being accounted for by industries with a negative external orientation (i.e. industries where imported input costs exceeded export revenue). In addition, it was also found that those sectors that became more externally oriented had lower inflation rates and higher growth rates than the other sectors in the economy for the period under analysis. The extent to which the increased exposure to international trade facilitated these developments remains topical for further research.     

ESTIMATING EXCHANGE RATE AND BILATERAL TRADE BALANCE RELATIONSHIPS: THE EXPERIENCE OF SUB-SAHARAN AFRICAN COUNTRIES

This paper examines the effects of exchange rate changes on the bilateral trade balance of ten African countries vis‐à‐vis the US using annual data over period 1977‐2002. Both the Johansen and panel cointegration tests find cointegration among the series. The country FMOLS results show that real exchange rate depreciation improves the trade balance in six of ten countries in contrast to Tanzania in which it worsens the trade balance, with no effect found in Ghana, Morocco and Senegal. Foreign real income improves the trade balance in two countries but worsens it in another three. Finally, domestic real income negatively affects the trade balance in four countries but improves it in another three. The three‐panel coefficients are correctly signed and significant at the 1% level.     

COMMODITY PRICE SHOCKS AND THE AUSTRALIAN ECONOMY SINCE FEDERATION*

Australia has experienced frequent and large commodity export price shocks similar to commodity exporters in Asia, Africa, and Latin America, but this price volatility has had much more modest impact on economic performance. Why? This paper explores Australian terms of trade volatility since 1901. It identifies two major price shock episodes before the recent mining‐led boom and bust. It assesses their relative magnitude, their impact on de‐industrialisation and distribution during the booms, and the labour market and policy responses to the shocks. Australia has indeed responded differently to volatile commodity prices than have other commodity exporters.     

REVISITING INFORMAL EMPLOYMENT AND SEGMENTATION IN THE SOUTH AFRICAN LABOUR MARKET

This study revisits the definition of informal employment, and it investigates the puzzle of high open unemployment co‐existing with relatively limited informal employment in South Africa. We estimate earnings equations using data from the September 2004 Labour Force Survey and present evidence of persistent earnings differentials not only between formal and informal employment, but also between types of informal employment. These persistent earnings differentials are suggestive of complex segmentation in the South African labour market and challenge the presentation of informal employment as an undifferentiated residual with no barriers to entry or mobility.