Ran Abramitzky, Leah Boustan, Katherine Eriksson, James J Feigenbaum, Santiago Pérez, 14 February 2020

A number of vital questions in the social sciences, relating to intergenerational mobility or assimilation of migrants for example, require data that follow individuals over time. The recent digitisation of historical population censuses for the US and other countries has increased their availability, but linking such historical data is challenging. This column compares the performance of various linking methods and concludes that automated methods perform no worse on key dimensions than (more expensive) hand linking using standard linking variables.

Trevon Logan, John Parman, 09 March 2015

Racial disparities in socioeconomic conditions remain a major policy issue throughout the world. This column applies a new neighbour-based measure of residential segregation to US census data from 1880 and 1940. The authors find that existing measures understate the extent of segregation, and that segregation increased in rural as well as urban areas. The dramatic decline in opposite-race neighbours during the 20th century may help to explain the persistence of racial inequality in the US.

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