Tariff protection and workforce gender: Evidence from U.S. manufacturing industries

A data set of 266 four-digit SIC U.S. manufacturing industries is used to examine the relationship between tariff protection and workforce gender. The paper shows that industries with a relatively large proportion of women are more likely to be protected by U.S. tariff policy, even when factors such as wages and human capital are controlled. Furthermore, this result is robust in that it is not driven by any particular industry or industries.     

Fertility and child mortality in Cote d'Ivoire and Ghana.

This article summarizes a 1994 World Bank working paper on methodological issues and a study of the determinants of child mortality and fertility in Ghana and the Cote d'Ivoire. Data were obtained from the 1985, 1986, and 1987 Cote d'Ivoire Living Standards Survey and the 1987-88 and 1988-89 Ghana Living Standards Survey. Both surveys entailed two-stage, self-weighted stratified samples. The study sample included women who had at least one birth 5 or more years before the survey. The conceptual framework distinguishes between endogenous and exogenous variables affecting fertility. The statistical approach relies on parallel reduced-form techniques. Model I assumes that all explanatory variables are exogenous. Model II excludes husbands' characteristics and household composition. Model III assumes that excluded model II factors are exogenous and likely to affect child mortality and fertility. Findings indicate that economic resources of households, maternal education, access to markets, and food prices were associated with child mortality in Ghana. Sanitation in both countries affected child survival only for less educated mothers. Urban residence in Ghana particularly benefitted uneducated mothers. In Cote d'Ivoire, household assets were not a significant predictor of child mortality. When child mortality is treated as exogenous in fertility model I, only 4-15 fewer child deaths were associated with a reduction of only one birth. Local health programs and environment explained little of the variation in child mortality in both countries. Women's education was strongly related to fertility declines in both countries. Assets and maternal health were positively related to fertility in Cote d'Ivoire and negatively related in Ghana. Findings suggest that the negative effects of household assets on fertility apply in urban subsamples among older women in each country. The authors conclude that economic growth must occur simultaneously with increased levels of female education and urbanization.     

Linking quality & quantity

Interpretations are theoretical structures that explain empirical facts. The joint use of data from qualitative and quantitative studies can provide empirical facts for interpretation that are both valid and reliable. The examples reviewed in this article show how articulated qualitative and quantitative research can ameliorate three interrelated methodological problems that have hindered the gaining of an interpretive understanding of social actions. These are: (1) verstehen and the implementation of empirical studies to assess the subjective meaning of social actions; (2) the linking of understanding and explanation; and (3) the linking of macro and micro analysis.     

HOW MANY SMALL FIRMS ARE ENOUGH?

Individual investors are undiversified, holding on average less than four securities in their personal portfolios. The small firm literature focuses on CAPM (systematic risk, full diversification concept) premia, and the actual performance of small firm portfolios held by investors is overstated because of the presence of unsystematic risk. This paper illustrates the magnitudes of total risk for small and large firms, and the behavior of such measures as portfolio size is altered. Small firms contain more risk as shown by the finding that a diversified portfolio of small firms has greater variability than a single, typical large firm. While small firms outperform large firms, investors should be aware of the implications for small firm undiversified portfolios. Because small firms contain large amounts of unsystematic risk, diversification is important if investors are going to capture the small firm premia reported in the literature.     

Collusion,entry, and market shares

This paper analyzes market entry and collusion in a model of duopoly with product-specific-set-up costs. The analysis demonstrates that collusion can alter the incentives for entry deterrence. We find conditions under which an established firm will permit entry and collude with a potential entrant even though entry deterrence is a viable option under noncooperative oligopoly rules. Conditions are also specified in which entry will be effectively impeded and collusion will not be undertaken.