This paper examines the effect of waterborne lead exposure on infant mortality in American cities over the period 1900 to 1920. Variation across cities in water acidity and the types of service pipes, which together determined the extent of lead exposure, identifies the effects of lead on infant...

Causal estimates of the benefits of increased schooling using U.S. state schooling laws as instruments typically rely on specifications which assume common trends across states in the factors affecting different birth cohorts. Differential changes across states during this period, such as...

Iodine deficiency is the leading cause of preventable mental retardation in the world today. The condition, which was common in the developed world until the introduction of iodized salt in the 1920s, is connected to low iodine levels in the soil and water. We examine the impact of salt...

The Protestant ethic has been depicted as declining in America between 1870 and 1930, due to new affordable consumer durables and less rewarding industrial work. This article re-examines this period and finds that the Protestant ethic did not so much decline as become transformed. The work ethic...

Algan and Cahuc in "Inherited Trust and Growth" (AER, 2010) argue that "inherited trust" is a key factor in explaining growth rates across countries. They derive a measure of inherited trust by linking respondents' "home countries" in the United States General Social Survey (1972-2004) and the...

Using historical census and survey data, Long and Ferrie (2013) found a significant decline in social mobility in the United States from 1880 to 1973. We present two critiques of the Long-Ferrie study. First, the data quality of the Long-Ferrie study is more limiting than the authors...

The US tolerates more inequality than Europe and believes its economic mobility is greater than Europe?s, though they had roughly equal rates of intergenerational occupational mobility in the late twentieth century. We extend this comparison into the nineteenth century using 10,000...

We reanalyze Long and Ferrie's data. We find that the association of occupational status across generations was quite similar over time and place. Two significant differences were: (i) American farms in 1880 were far more open to men who had nonfarm backgrounds than were American farms in 1973...

We provide new estimates of migrant flows into and out of America during the Age of Mass Migration at the turn of the twentieth century. Our analysis is based on a novel data set of administrative records covering the universe of 24 million migrants who entered Ellis Island, New York between...