THE RETURNS TO ENDOGENOUS HUMAN CAPITAL IN PAKISTAN'S RURAL WAGE LABOUR MARKET

This paper estimates the private returns to human capital in Pakistani rural labour markets. The rich data used permit inclusion of several dimensions of human capital and control for endogeneity resulting from investment in human capital. The results suggest that, without data on determinants of human capital, it would not be possible to disentangle the separate effect of each dimension of human capital on wage differentials nor to distinguish human capital explanations for wage differentials from signalling and credentialist models. With control for endogeneity of human capital and selectivity into wage employment, cognitive achievement, but not schooling attainment separate from cognitive achievement nor long-run health status, affects wage differentials.     

A Comparison of EPI Sampling, Probability Sampling, and Compact Segment Sampling Methods for Micro and Small Enterprises

Finding an efficient method for sampling micro- and small-enterprises (MSEs) for research and statistical reporting purposes is a challenge in developing countries, where registries of MSEs are often nonexistent or outdated. This lack of a sampling frame creates an obstacle in finding a representative sample of MSEs. This study uses computer simulations to draw samples from a census of businesses and non-businesses in the Tshwane Municipality of South Africa, using three different sampling methods: the traditional probability sampling method, the compact segment sampling method, and the World Health Organization's Expanded Programme on Immunization (EPI) sampling method. Three mechanisms by which the methods could differ are tested, the proximity selection of respondents, the at-home selection of respondents, and the use of inaccurate probability weights. The results highlight the importance of revisits and accurate probability weights, but the lesser effect of proximity selection on the samples' statistical properties.     

The Poor and the Social Sectors during a Period of Macroeconomic Adjustment: Empirical Evidence for Jamaica

Considerable uncertainty remains about the human impact of macroeconomicadjustment. Analysis of the impact of adjustment on the poorand on the social sectors is difficult because it involves evaluatinga counterfactual situation in which households are affectedby prices, incomes, and public services with the possibilityof substantial substitutions—all within an economywideframework with complicated concurrent and lagged interactions.In this article, we utilize time-series data for Jamaica toexamine whether macroeconomic adjustment, initiated in the early1980s but intensified in 1984–85, was associated withsignificant deterioration in various indicators of health, nutritional,and welfare outcomes, particularly among the poor. Althoughwe find evidence of substantial cuts in governmental expenditureson social services, there is little confirmation of significantshort-run deterioration in human capital indicators during theadjustment period.     

The impact of demographic changes on income distribution in a developing country

"A common hypothesis regarding the distribution of income is that it tends to become more unequal in the initial and middle stages of economic development, in part because of demographic changes. However, previous studies of the effect of demographic changes on income distribution are not based on the underlying micro determinants of the income components." In the present paper, "the micro determinants of the probability of receipt and amount received conditional on receipt of four income components are estimated for three regions defined by the degree of urbanization. Five simulations of hypothetical demographic changes are conducted. The simulated effects on some of the regional income component distributions are fairly considerable in regard both to equalizing the distributions and increasing the shares of the poorest. However, the overall effects are regressive in both urban and rural regions."     

Adequacy of International Codes of Behavior

International codes of corporate behavior have been proposed, discussed, negotiated, and promulgated by governments, transnational corporations, and inter-corporate associations over the past few decades. It is not clear that they have been resoundingly as successful in changing corporate behavior – particularly as to corruption and environmental protection – as have national government requirements imposed on foreign enterprises and their own officials. This article arrays the many attempts to structure cooperative action to re-order corporate behavior on several dimensions – restrictive business practices, labor conditions, human rights, environmental production, and corruption. It then assesses the extent to which behavior has been changed and what techniques are more effective in making corporate behavior more ethical.