WHAT PRICE‐LEVEL DATA CAN TELL US ABOUT PRICING CONDUCT IN SOUTH AFRICA

This article reports the findings of a study of two unique microdata sets, which are the unit level basis of South Africa's measured Consumer Price Index and Producer Price Index, over the period December 2001‐December 2007. In particular, based on techniques that have been used in comparable international studies, findings are reported on the frequency and magnitude of price changes, the duration of prices, and heterogeneity in pricing. The results for South Africa are compared with the stylised facts for pricing conduct, which have been presented in recent international studies. The article offers an illustration of how microdata‐based findings on pricing conduct may impact on the modelling of monetary policy by introducing micro‐founded results into an open economy dynamic stochastic general equilibrium model for the South African economy. The article concludes by identifying areas for further research, where it has not as yet been determined how South African pricing conduct compares with certain stylised pricing facts identified in the international literature.     

TRADE LIBERALIZATION AND PRICE‐COST MARGIN IN INDIAN INDUSTRIES

Using panel data for 137 three‐digit industries for 1980/81 to 1997/98, the paper examines the effect of trade liberalization on price‐cost margins in Indian industries. An econometric model is estimated to explain variations in price‐cost margins, taking tariff and nontariff barriers among the explanatory variables. The results indicate that the lowering of tariffs and removal of quantitative restrictions on imports of manufactures in the 1990s had a significant pro‐competitive effect on Indian industries, particularly concentrated industries, tending to reduce the price‐cost margins. The paper notes that despite the pro‐competitive effects of trade liberalization reinforced by domestic industrial deregulation, the price‐cost margin increased in the post‐reform period in most industries and aggregate manufacturing, which is attributed to a marked fall in the growth rate of real wages and a significant reduction in labor's income share in value added in the post‐reform period, reflecting perhaps a weakening of industrial labor's bargaining power.     

RESEARCH NOTE: ERRORS IN THE OCTOBER HOUSEHOLD SURVEY 1994 AVAILABLE FROM THE SOUTH AFRICAN DATA ARCHIVE1

The on‐line electronic documentation supplied with the 1994 October Household Survey by the South African Data Archive (SADA) appears to be incorrect. In particular, the electronic version of the questionnaire does not correspond to the hard copy in the possession of the author. The most serious error is that the race classification in the electronic copy is different from the classification on the hard copy. Researchers relying on the electronic copy will erroneously interchange the categories “Coloured”, “White” and “Black”. This could lead to seriously misleading analyses. The reason for this mistake can probably be attributed to a retyping of the questionnaire using the 1993 OHS as a template.     

THE EQUITY PREMIUM AND RISK-FREE RATE PUZZLES IN A TURBULENT ECONOMY: EVIDENCE FROM 105 YEARS OF DATA FROM SOUTH AFRICA

This paper presents a detailed empirical examination of the South African equity premium, and a quantitative theoretic exercise to test the canonical inter-temporal consumption-based asset-pricing model under power utility. Over the long run, the South African stock market produced average returns six to eight percentage points above bonds and cash, and at the 20-year horizon, an investor would not have experienced a single negative realised equity premium over the entire 105-year period we examine. Yet the maximum equity premium rationalised by the consumption-based model is 0.4%. The canonical macro-financial model closely matches the average risk-free rate, using realistic parameters for the coefficient of risk aversion and a positive rate of time preference.     

Price‐Setting Behaviour in Lesotho: Stylised Facts from Consumer Retail Prices

This paper documents some of the main features of price‐setting behaviour by retail outlets in Lesotho over the period March 2002 to December 2009. These features include the frequency, size, duration and synchronisation of price changes. In addition, the paper compares price‐setting behaviour in Lesotho and South Africa using a comparable set of products. The findings reveal considerable heterogeneity in price‐setting behaviour across products, outlets, locations and time. Variations in inflation are strongly correlated with the average size of price changes, but rising inflation raises the frequency of price increases and reduces the frequency of price decreases. Price decreases constitute an important determinant of inflation movements. Surprisingly, the frequency and size of price changes in Lesotho differ substantially from those in South Africa, despite the presence of common retail chains and their joint membership in a customs union and common monetary area. These findings open up opportunities for further research into the sources of heterogeneity across products and Lesotho and South Africa in the setting of prices.     

PATTERNS OF CO‐MOVEMENT BETWEEN SOUTH AFRICA AND GERMANY: EVIDENCE FROM THE PERIOD 1985 TO 2006

This paper examines the co‐movement between Germany and South Africa by applying a dynamic factor model. Because these two countries have a long history of predominant trade ties, they deemed to be suitable proxies to analyse the channels of transmission of positive supply and demand shocks in a developed economy and the effects of these on an emerging market economy. In contrast to general expectations, the paper concludes that a German supply shock has more of a demand‐shock effect on the South African economy, while a German demand shock is transmitted through price in South Africa. This implies that the policy response in South Africa should not necessarily be the same as in Germany.     

EFFECTS OF IMPROVING INFRASTRUCTURE QUALITY ON BUSINESS COSTS: EVIDENCE FROM FIRM‐LEVEL DATA IN EASTERN EUROPE AND CENTRAL ASIA

Public infrastructure is one of the important determinants of economic growth. Not only access to but also quality of infrastructure affects firm productivity as well as people's livelihood. Frequent interruptions of the infrastructure‐service supply impose extra backup costs on enterprises, hinder their timely business activities, and result in large losses of sales opportunities. This paper focuses on the impacts of improving the quality of public utilities (electricity, water supply, and telecommunications), using firm‐level data from 26 transition economies in Eastern Europe and Central Asia. The results suggest that firm costs would significantly increase when electricity outages occur frequently and the outage duration becomes longer. Similarly, when more time is required to restore suspended water supply, firms' competitiveness would be weakened. Not surprisingly, the impacts tend to vary depending on industry. The construction, manufacturing, and hotel and restaurant sectors are found particularly vulnerable.     

FACTORS INHIBITING DEFLATIONARY BIAS IN CURRENCY BOARD ECONOMIES: EVIDENCE FROM THE COLONIAL ERA

A traditional criticism of currency boards is that they impart a deflationary bias to growing economies. Three factors, however, may inhibit the bias: increases in the velocity of money; increases in the monetary base, which under a currency board occur only through balance-of-payments surpluses; and increases in the money multiplier. This article investigates each of the factors in Fiji, Ghana, Jamaica and Malaya over various periods near the end of the colonial era. Except in Malaya, where the money multiplier declined, all helped prevent deflationary outcomes. In broad terms, growth in the monetary base was the most important.     

REMITTANCES AND AGGREGATE LABOR SUPPLY: EVIDENCE FROM SIXTY‐SIX DEVELOPING NATIONS

Do remittances reduce labor supply in recipient economies? This paper addresses this question with aggregate level data for a panel of sixty‐six developing countries from the Middle East and Africa, Asia and the Pacific, and Latin America and the Caribbean over the period 1985 to 2005. The results exhibit a positive and significant relationship between remittances and aggregate labor supply. The effect is clearly driven by men in each of the three regions. Three potential explanations are put forward to explain these empirical findings: (1) non‐migrating household members are likely to increase their labor supply in order to defray migration‐related expenses; (2) neighboring households increase their labor supply to help family members migrate after they become more aware of the benefits of remittances; and (3) remittances overcome credit constraints, thus generating employment.     

MICROFINANCE PENETRATION AND ITS INFLUENCE ON CREDIT CHOICE IN INDONESIA: EVIDENCE FROM A HOUSEHOLD PANEL SURVEY

This paper studies empirical determinants of how heterogeneous households are matched to different types of loan products in a credit market in Indonesia. A unique situation arose when a microfinance institution launched operations in our survey area during the survey period, and we utilized its market entry for conducting mixed logit analysis of households’ credit choices. Time-varying choice sets help us identify parameters regarding preferences for various credit attributes. Our results show that the new availability of small-scale loans without collateral requirement greatly increases households’ probability of obtaining credit overall. Households in self-employed business prefer formal credit as a stable financing source but are impeded in receiving it when they locate in a rural area, probably because of large transaction costs. The poorest households, however, might not be able to exploit new credit opportunities as much as richer households, even if the scale of credit is very small.     

THE DETERMINANTS OF GRADE ATTAINMENT IN LOW‐INCOME COUNTRIES: EVIDENCE FROM RURAL BANGLADESH

This paper presents an econometric analysis of the effects of child health on school enrollment and grade attainment in Bungladesh. It improves on past studies in a number of ways mainly by incorporating into its analysis the endogenous nature of child health. The results challenge the conclusions found in the literature. First, it finds that in Bangladesh, a child's health and his/her probability of being enrolled in school are at best weakly related. Second, it shows that once enrolled, nutritional deficiencies retard substantially school progress: Underweight children tend to be in lower grades than well‐fed children of the same age. It is estimated that a one standard deviation improvement in weight‐for‐age would be expected to reduce the grades behind by about 0.25 years or about 13.5 percent of the actual years completed. Finally, the estimates suggest that the weight‐for‐age indicator appears as the best predictor of nutritional status.     

Sales and Firm Entry: The Case of Wal‐Mart

Temporary price reductions or “sales” have become increasingly important in the evolution of the price level. We present a model of repeated price competition to illustrate how entry causes incumbents to alternate between high and low prices. Using a six‐year panel of weekly observations from a grocery chain, we find that individual stores employ more sales as the distance to Wal‐Mart falls. Moreover, the increase in the frequency of sales was concentrated on the most popular products, suggesting the use of a loss‐leader strategy.     

LONG MEMORY IN THE VOLATILITY OF AN EMERGING FIXED‐INCOME MARKET: EVIDENCE FROM SOUTH AFRICA

This paper tests for long memory in volatility of fixed‐income returns; specifically, South Africa's local currency 10‐year government bond, given that the characterisation of stochastic long‐memory volatility is of interest and importance in portfolio and risk management. The long‐memory parameter is estimated using methods based on wavelets, which have gained prominence in recent years. Evidence of long memory in fixed‐income return volatility is conclusively demonstrated across a variety of volatility measures and wavelet forms. This finding suggests a pattern of time dependence, which may potentially be exploited to generate improved volatility forecasting performance especially over long horizons. This paper further extends the extant literature by comparing the predictive power of long‐memory forecasts with those obtained from a standard (short‐memory) generalised autoregressive conditional heteroskedasticity (GARCH) process. The results of this exercise suggest that the information content of long‐memory models does not lead to improved forecast accuracy. The GARCH(1,1) model is shown to provide the best forecasts across most horizons (i.e. daily, weekly and monthly). Forecast performance is further revealed to be sensitive to the choice of volatility proxy used. Finally, the derived volatility forecasts are generally very close, and in some cases, almost indistinguishable.     

EXPORT‐LED GROWTH HYPOTHESIS: FURTHER ECONOMETRIC EVIDENCE FROM SOUTH ASIA

This paper examines the export‐led growth (ELG) hypothesis for five South Asian countries through cointegration and multivariate Granger causality tests. Strong support for a long‐run relationship among exports, imports, and real output for all the countries except Sri Lanka were found. Feedback effects between exports and GDP for Bangladesh and Nepal and unidirectional causality from exports to output in the case of Pakistan were found. No causality between these variables was found for Sri Lanka and India, although for India GDP and exports did induce imports. A feedback effect between imports and GDP was also documented for Pakistan, Bangladesh, and Nepal, as well as unidirectional causality from imports to output growth for Sri Lanka. These and other findings are discussed from the standpoint of the export‐led growth hypothesis.     

EMPLOYMENT,CAPITAL, AND PRODUCTIVITY DYNAMICS: EVIDENCE FROM THE MANUFACTURING SECTOR IN URUGUAY

Using a sample of Uruguayan manufacturing establishments we analyze employment, capital, and productivity dynamics over a period of currency appreciation; changes in trade policy; and changes in the institutional setting of wage negotiations. As the relative capital–labor price ratio fell, capital intensity increased. At the same time, there was an increase in labor and total factor productivity. Creation and destruction rates were relatively high and pervasive over time, sectors, establishment size, and establishment age, with exits explaining a sizeable part of destruction rates. Most of the excess reallocation was due to movements “within” rather than “between” sectors. Thus, high reallocation rates were linked to establishment‐level heterogeneity rather than aggregate shocks.     

LIBERALISING TRADE IN SOUTH AFRICA: A SURVEY OF COMPUTABLE GENERAL EQUILIBRIUM STUDIES

This paper reviews applications of computable general equilibrium models to trade liberalisation in South Africa. It focuses on economic structure, data, macroeconomic closure and results of the models. The models project that trade liberalisation has had small positive impacts on growth. Poverty and inequality outcomes are less clear cut and depend on the model used. Models with fully integrated micro data find that poverty has worsened slightly while inequality has risen. Aggregated models predict that poverty has been reduced by small amounts. Dynamic models report rising inequality but falling poverty incidence. The paper identifies areas for future research.     

RISK–RETURN TRADE‐OFF AND BEHAVIOUR OF VOLATILITY ON THE SOUTH AFRICAN STOCK MARKET: EVIDENCE FROM BOTH AGGREGATE AND DISAGGREGATE DATA

The study analyses the nature and behaviour of volatility, the risk–return relationship and the long‐term trend of volatility on the South African equity markets using aggregate level, industrial level and sectoral level daily data for the period 1995‐2009. By employing dummy variables for the Asian and the sub‐prime financial crises and the 11 September political shock, the study further examines whether the long‐term trend of volatility structurally breaks during financial crises and major political shocks. Three time‐varying generalised autoregressive conditional heteroskedasticity models were employed: one of them symmetric, and the other two asymmetric. Each of these models was estimated based on three error distributional assumptions. The findings of the study are as follows: First, volatility is largely persistent and asymmetric. Second, risk at both aggregate and disaggregate level is generally not a priced factor on the South Africa (SA) stock market. Third, the threshold autoregressive conditional heteroscedasticity (TARCH) model under the generalised error distribution is the most appropriate model for conditional volatility of the SA stock market. Fourth, volatility generally increases over time, and its trend structurally breaks during financial crises and major global shocks. The policy and investment implications of the findings are outlined.     

Tacit Collusion in Price‐Setting Oligopoly: A Puzzle Redux

We study tacit collusion in price‐setting duopoly games with strategic complements and substitutes. While this problem has been considered by several studies, this article sheds new light on the comparison by focusing on the relationship between dynamic stability of equilibrium and tacit collusion. We find when controlling for the absolute slope of the reaction functions, there are no robust differences in either the convergence properties or tacit collusion between complements and substitutes treatments.