Age data frequently display excess frequencies at attractive numbers, such as multiples of five. We use this "age heaping" to measure cognitive ability in quantitative reasoning, or "numeracy". We construct a database of age heaping estimates with exceptional geographic and temporal coverage,...

We propose a new theory of the demographic transition based on the evidence that body development during childhood is an important predictor of adult life expectancy. Fertility, childhood development, longevity, education and income growth all result from individual decisions. Parents face a...

Economists have long viewed recessions as contributing to increasing inequality. This conclusion is largely based on data from a period in which inequality was increasing over time, however. This Paper examines the connection between long-run trends and cyclical variation in earnings inequality....

How does the relationship between earnings and schooling change with the introduction of comprehensive economic reform? This Paper uses a unique dataset (covering about 3 million Hungarian wage earners, from 1986 to 1998) and a novel procedure to correct sample selection bias (based on DiNardo,...

How valuable are the skills acquired under socialism in a market economy? This Paper throws light on this question using unique data covering the years before and during transition (1986-98) for about 3 million Hungarian wage earners. We find that returns to a year of schooling increased by 75%...

The pessimistic flavour of the Human Development Reports appears to be in contradiction with their own numbers as developing countries fare comparatively better in human development than in per capita GDP terms. This paper attempts to bridge this gap by providing a new, ‘improved’ human...

We investigate the origin, impact and evolution of citizenship laws. Citizenship laws originate from the common and civil law traditions, which apply jus soli and jus sanguinis, respectively. We compile a dataset across countries of the world starting from the 19th century. The impact of the...

This paper first draws on a unique data set, hojok (household registers), to estimate numeracy levels in Korea from the period 1550–1630. We add evidence from Japan and China from the early modern period until 1800 to obtain a human capital estimate for East Asia. We find that numeracy was...

How has wellbeing evolved over time and across regions? How does the West compare to the Rest? What explains their differences? These questions are addressed using an historical index of human development. A sustained improvement in wellbeing has taken place since 1870. The absolute gap between...