We show that children who are born at or just before the weekend are less likely to be breastfed, owing to poorer breastfeeding support services in hospitals at weekends. We use this variation to estimate the effect of breastfeeding on children’s development in the first five years of life,...

Using a large and novel administrative dataset, this paper investigates variation in returnsto different higher education ‘degrees’ (subject-institution combinations) in the United King-dom. Conditioning on a rich set background characteristics, it finds substantial variation inreturns, even...

We use newly linked UK administrative to estimate absolute income mobility for children born in England in the 1980s. We find huge differences across the country, with a strong North-South gradient. Children from low-income families who grew up in the lowest mobility areas - overwhelmingly in...

"We show that much of the recent reported decrease in interstate migration is a statistical artifact. Before 2006, the Census Bureau's imputation procedure for dealing with missing data inflated the estimated interstate migration rate. An undocumented change in the procedure corrected the...