In this paper, we construct and estimate a unified model combining three of the main sources of cross-country income disparities: differences in factor endowments, barriers to technology adoption and the inappropriateness of frontier technologies to local conditions. The key components of our...

We analyze recent contributions to growth theory based on the model of expanding variety of Romer (1990). In the first part, we present different versions of the benchmark linear model with imperfect competition. These include the "lab equipment" model, "labor-for-intermediates" and "directed...

This paper presents a tractable dynamic general equilibrium model that can explain cross-country empirical regularities in geographical mobility, unemployment and labor market institutions. Rational agents vote over unemployment insurance (UI), taking the dynamic distortionary effects of...

We study the short- and long-run implications of offshoring on innovation, technology adoption, wage and income inequality in a Ricardian model with directed technical change. A unique final good is produced by combining a skilled and an unskilled product, each produced from a continuum of...