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Self-published

Replication data for: Age at Arrival, English Proficiency, and Social Assimilation among US Immigrants (ICPSR 113738)

Released/updated on: 2019-10-12
Are the English proficiency and social outcomes of US immigrants the result of their cultural preferences or of more fundamental constraints? Using 2000 census microdata, we relate the English proficiency, marriage, fertility, and residential location variables of immigrants to their age at the time of arrival in the United States, and, in particular, whether that age fell within the "critical period" of language acquisition. We interpret the differences between younger and older arrivers as effects of English language skills and construct an instrumental variable for English language skills. Two-stage-least-squares estimates suggest English proficiency increases the likelihood of divorce and intermarriage. It decreases fertility and, for some, ethnic enclave residence. (JEL J11, J13, J61, R23, Z13)
Self-published

Replication data for: History and the Sizes of Cities (ICPSR 113396)

Released/updated on: 2019-10-12
We contrast evidence of urban path dependence with efforts to analyze calibrated models of city sizes. Recent evidence of persistent city sizes following the obsolescence of historical advantages suggests that path dependence cannot be understood as the medium-run effect of legacy capital but instead as the long-run effect of equilibrium selection. In contrast, a different, recent literature uses stylized models in which fundamentals uniquely determine city size. We show that a commonly used model is inconsistent with evidence of long run persistence in city sizes and propose several modifications that might allow for multiplicity and thus historical path dependence.
Self-published

Replication data for: Malaria Eradication in the Americas: A Retrospective Analysis of Childhood Exposure (ICPSR 113746)

Released/updated on: 2019-10-12
This study uses the malaria-eradication campaigns in the United States (circa 1920) and in Brazil, Colombia, and Mexico (circa 1955) to measure how much childhood exposure to malaria depresses labor productivity. The campaigns began because of advances in health technology, which mitigates concerns about reverse causality. Malarious areas saw large drops in the disease thereafter. Relative to non-malarious areas, cohorts born after eradication had higher income as adults than the preceding generation. These cross-cohort changes coincided with childhood exposure to the campaigns rather than to pre-existing trends. Estimates suggest a substantial, though not predominant, role for malaria in explaining cross-region differences in income. (JEL I12, I18, J13, O15)