German separation in 1949 into a communist East and a capitalist West and their reunification in 1990 are commonly described as a natural experiment to study the enduring effects of communism. We show in three steps that the populations in East and West Germany were far from being randomly...

Do Empires affect human values and behavior long after their demise? In several Eastern European countries, communities on both sides of the long-gone border of the Habsburg Empire have been sharing common formal institutions for 90 years now. We exploit this geographic discontinuity in a...

Why did substantial parts of Europe abandon the institutionalized churches around 1900? Empirical studies using modern data mostly contradict the traditional view that education was a leading source of the seismic social phenomenon of secularization. We construct a unique panel dataset of...

We estimate the effect of broadband infrastructure, which enables high-speed internet, on economic growth in the panel of OECD countries in 1996-2007. Our instrumental-variable model derives its non-linear first stage from a logistic diffusion model where pre-existing voice-telephony and...

Although many U.S. state policies presume that human capital is important for state economic development, there is little research linking better education to state incomes. We develop detailed measures of skills of workers in each state based on school attainment from census micro data and on...