This paper discusses (a) the role of cognitive and noncognitive ability in shaping adult outcomes, (b) the early emergence of differentials in abilities between children of advantaged families and children of disadvantaged families, (c) the role of families in creating these abilities, (d)...

Objectives. To investigate the relationship between breastfeeding duration and cognitive development using longitudinal survey data. The World Health Organisation (WHO) and the American Academy of Pediatrics (AAP) recommend exclusive breastfeeding until six months post-partum and a combination...

Differential ratings by multiple informants are an important issue in survey design. Although much research has focused on differential reports of child behaviour, discrepancies between parent and teacher reports of children’s school readiness are less explored.

While financial incentives usually have a significant effect on the labor supply of married women and single mothers, the evidence about the participation elasticity of childless singles, and single males especially, is more scant. This is, however, important in countries like France and...

Using the nationally representative Slan dataset we calculate concentration indices for the incidence of obesity for men and women. We finder higher concentration indices for women than for men, but we also find that concentration indices fell between 2002 and 2007. However this appears to be...

Kanazawa (2007) offers an explanation for the variation across countries of average intelligence. It is based on the idea human intelligence is a domain specific adaptation and that both temperature and the distance from some putative point of origin are proxies for the degree of novelty that...

In a recent paper, Kanazawa and Kovar (2004) assert that given certain empirical regularities about assortative mating and the heritability of intelligence and beauty, that it logically follows that more intelligent people are more beautiful. It is argued here that this theoremʺ is false and...