A child health production function estimated from longitudinal data. Cebu Study Team

Collaborating researchers used a multi equation model to analyze 3080 mother-infant pairs living on the island of Cebu in the central Philippines and to estimate a child health production function. The econometric methods used eliminated obstacles such as heterogeneity and endogeneity of significant explanatory factors. They also maximized the longitudinal quality of the data. The results showed that morbidity in 1 period reduced infant weight in following periods. For example, diarrhea and febrile respiratory infection reduced growth in the time period following the illnesses. Further effects of some contributing factors were great near birth not diminished with age. For example, breast feeding promoted growth and protected against infection, especially diarrhea and febrile respiratory infection, more substantially near birth than it did later. Further, in urban areas, preventive health care positively affected growth independently of its indirect influence on reducing respiratory infection. Yet it had little effect on diarrhea. Diarrhea had a strong adverse effect on growth. Exposure of the infant to enteric pathogens had the greatest influence on production of diarrhea. In urban areas, exposure included water supply contamination, exposure to feces, a more pathogenic diet, and community crowding. In rural areas, however, exposure included community crowding and increased rainfall which presumably washed feces into the water supply. Household crowding in both urban and rural areas and irritation from smoke in urban areas only tended to bring about febrile respiratory infection.     

Multiracialism and Meritocracy: Singapore's Approach to Race and Inequality

This paper characterizes Singapore's efforts to tackle the problem of persistent racial inequality in terms of the notion of fair meritocracy. Singapore's race policy attempts to level the playing field through its unique race-based self-help organizations and a comprehensive, racially integrated, public housing program. Individuals are then sorted by the ostensibly objective mechanism of a standardized test based educational system. The social and economic implications of this policy are examined and, using summary data from the 1980 and 1990 censuses, the extent to which Singapore has been successful in creating a fair multiracial meritocracy is assessed.     

Second time lucky? Withdrawn IPOs that return to the market

We investigate issuers withdrawing an IPO (after security regulation filings) that return later for a successful offering. Venture capital backing and reputation of the lead underwriter are key factors in predicting successful return. The possibility of returning has a significant impact on the decision to withdraw and the pricing of offerings that succeed. Our sample of returning IPOs also provides a unique setting to investigate underwriter switching after a withdrawal but before a successful IPO. We find that switching occurs in response to poor bank performance and when switching firms “graduate” to banks that have high industry market shares.     

Estimating demand elasticities under rationing

Eliminating rationing in the United Kingdom following the Second World War was a concern for policy-makers because of potentially large fluctuations in post-war prices and the impact on unrationed goods. This study shows that in using virtual prices, elasticities can be estimated from a ‘free’ demand system consistent with observed consumer choices. Substitution estimates without accounting for rationing are misleading. In contrast, using virtual prices and estimating a ‘free’ market system yield results similar to those of the pre-war period. Results show that food rationing affected expenditure across unrationed goods. Rationing on other services had little effect on expenditure across unrationed goods.     

Increasing the relevance of mathematical approaches to demographic history

In this short paper we comment on recent efforts at formally modelling the interplay between demography and cultural evolution. We draw attention to the fact that, although these efforts are to be applauded, much work has already been done in this area, and that this work is being ignored. We build a case for tighter collaboration between different social science disciplines concerned with human behaviour and long-term demography, and argue that mathematical models must be paired with empirical data.     

Fisher Ideal Indexes in the National Income and Product Accounts

The mastery of the spreadsheet technique has become almost universal in economics departments. The authors explain, step-by-step, how the spreadsheet can be used as an instructional aid to teach basic microeconomic concepts.