This paper provides the first estimates of the effects of handedness on hourly earnings. Augmenting a conventional earnings equation with an indicator of left handedness shows there is a well determined positive effect on male earnings with non-manual workers enjoying a slightly larger premium....

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...

This note re-examines a finding by Crow et al. (1998) that equal skill of right and left hands is associated with deficits in cognitive ability. This is consistent with the idea that failure to develop dominance of one hemisphere is associated with various pathologies such as learning...

This paper investigates the relationship between maternal employment and child outcomes using micro-data collected in the third wave of The Irish Longitudinal Study on Ageing. A novel source of exogenous variation in the employment decisions of women is used to investigate this relationship....