SECTORAL ELASTICITY OF SUBSTITUTION AND RETURNS TO SCALE IN SOUTH AFRICA

Elasticity of substitution and returns to scale are estimated on a sectoral basis for South Africa using panel-based generalised least square procedure. Apart from sectoral differences in terms of elasticity of substitution, the study found that elasticity of substitution is below unity in all of the sectors. Most of the sectors studied are found to have increasing returns to scale in production. The study further explores the implications of elasticity of factor substitution and returns to scale on growth and employment creation. It is argued that a greater number of jobs can be created from growth of sectors with constant or decreasing returns to scale than from the same level of output growth generated by sectors with increasing returns to scale. This is the case when the employment-creating potential of the same amount of additional output is compared in all the sectors examined. By virtue of scale economies, a sector like finance, insurance, real estate and business services generates more output with less proportional increase in inputs, which means growth in this sector may not have the desired impact on job creation. However, given the sector's large share (20%) of the country's total output and employment, it may generate more jobs, even if sectors like utilities and construction experience the same level of output growth. Given its importance for growth and employment, the study recommends further investigation into the reasons why elasticity of substitution is lower in sectors like utilities, mining and trade, catering and accommodation services.     

USING THE HIERARCHICAL LINEAR MODEL TO UNDERSTAND SCHOOL PRODUCTION IN SOUTH AFRICA

The emphasis placed in the existing South African school production function literature on better skilled teachers and better school management is discussed. Ordinary least squares and hierarchical linear production function models, using 2000 SACMEQ data, for the country and for a sub‐set of historically disadvantaged schools, are constructed. Ways of making the results more readable for policymakers are explored. The importance of physical infrastructure, textbook and nutrition budgets is highlighted by the models. Correct allocation of teaching and management time in schools, less learner repetition, and better teaching methodologies stand out as important school and classroom management imperatives.     

Export behavior and productivity growth: Evidence from Italian manufacturing firms

Export Behavior and Productivity Growth: Evidence from Italian Manufacturing Firms. — This paper provides econometric evidence supporting the hypothesis that exporting implies learning effects. Learning-by-exporting is modeled as a change, induced by export behavior, in the stochastic process governing firms’ productivity. Empirically, this is implemented by specifying cross-section regressions of labor productivity growth on measures of export behavior, controlling for past productivity growth and other firms’ characteristics. Using a sample of Italian manufacturing firms, it is found that exporters do not exhibit faster productivity growth. Nevertheless, growth in value added per worker has a positive and significant relation with firms’ export intensity. In other words, only firms substantially involved in exporting have a significantly higher rate of productivity growth. This result suggests that learning-by-exporting is by no means simply the outcome of the presence in the export market.     

International Technology Diffusion: Effects of Trade and FDI

There has been little analysis of the effect of inward FDI on international R&D diffusion, especially in LDCs, although FDI has become the core of international production and LDCs have been receiving an increasing share of world FDI over the past few decades. Using data from 57 countries from 1988 to 2001, we find that both FDI and trade serve as important channels of international technology diffusion. However, there exist heterogeneous effects of FDI in DCs and LDCs. For inward FDI to promote technology diffusion in LDCs, a certain threshold of human capital has to be reached.     

INTEGRATED PRODUCTION AND THE INVESTMENT–UNCERTAINTY RELATIONSHIP

This paper studies the role of production mode in determining the effects of an increase in uncertainty on the choice of investment outlay. In a continuous-time model of optimal capital investment with innovative R&D under demand uncertainty, we show that investments in both capital and innovative research decrease with an increase in uncertainty, and that such investments rise with the level of primary demand. Our result sheds light on the mode of production as a source of the negative investment–uncertainty relationship.     

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.     

FDI AND DOMESTIC INVESTMENT IN TAIWAN: AN ENDOGENOUS SWITCHING MODEL

The purpose of this paper is to examine the effect of the FDI decision on domestic investment in the case of Taiwanese manufacturing firms. In addition, we also consider the deferral effect of the FDI decision and the role of firm size. To this end, this paper takes advantage of an endogenous switching model from which consistent estimators are obtained after correcting for the self‐selection problem. The empirical results show that the effect of these manufacturing firms’ FDI decisions on domestic investment is significant within the firms. Furthermore, a crowding‐out effect of FDI on domestic investment is found when Taiwanese firms engage in defensive FDI. Finally, FDI is found to have a positive influence on the domestic investment of the larger firms, while the influence is negative in the case of the smaller firms.     

Product market competition, unemployment and income disparities

Product Market Competition, Unemployment and Income Disparities. — We discuss how promoting competition in product markets affects unemployment and wage differentials. We examine a general equilibrium model with real wage rigidities in labor markets and market power in product markets. We illustrate how more intense competition reduces unemployment. A decrease of markups would induce an increase of real wages if real wages were flexible. This enables the employment of more low-skilled people above a real reservation wage. More intensive competition, however, widens wage and income differences between low-skilled and high-skilled workers. Differences of income distributions across countries could also be caused by differences in the intensity of product market competition.