We document an empirical relationship between the cross-country adoption of technologies and the degree of long-term historical relatedness between human populations. Historical relatedness is measured using genetic distance, a measure of the time since two populations’ last common ancestors....

This paper studies the barriers to the diffusion of development across countries over the very long-run. We find that genetic distance, a measure associated with the amount of time elapsed since two populations' last common ancestors, bears a statistically and economically significant...

This paper presents a framework to understand and measure the effects of political borders on economic growth and per capita income levels. In our model, political integration between two countries results in a positive country size effect and a negative effect through reduced openness...

We develop a theory of interstate conflict in which the degree of genealogical relatedness between populations has a positive effect on their conflict propensities because more closely related populations, on average, tend to interact more and develop more disputes over sets of common issues. We...

The empirical literature on economic growth and development has moved from the study of proximate determinants to the analysis of ever deeper, more fundamental factors, rooted in long-term history. A growing body of new empirical work focuses on the measurement and estimation of the effects of...

What obstacles prevent the most productive technologies from spreading to less developed economies from the world’'s technological frontier? In this paper, we seek to shed light on this question by quantifying the geographic and human barriers to the transmission of technologies. We argue that...

As governments around the world contemplate slashing budget deficits, the "expansionary fiscal consolidation hypothesis" is back in vogue. I argue that, as a statement about the short run, it should be taken with caution. Alesina and Perotti (1995) and Alesina and Ardagna (2010) (AAP) show that...

Does it matter, for the size of the government spending multiplier, which category of agents bears the brunt of the necessary adjustment in taxes? In an economy with heterogeneous agents and imperfect financial markets, the answer depends on whether or not New Keynesian features, such are price...

Decentralization can lead to "good" or "bad" outcomes depending on the socio-cultural norms of the targeted communities. We investigate this issue by looking at the evolution of familism and nepotism in the Italian academia before and after the 1998 reform, which decentralized the recruitment of...

We document that an increase in government purchases generates a rise in consumption, the real and the product wage, and a fall in the markup. This evidence is robust across alternative empirical methodologies used to identify innovations in government spending (structural VAR vs. narrative...