I formulate and estimate a model of externalities within countries and technological interdependence across countries. I find that external returns to scale to physical capital within countries are 8 percent; that a 10 percent increase of total factor productivity of a country's neighbors raises...

We decompose aggregate saving and investment into its public and private components and then document a variety of ``stylized facts'' associated with saving and investment rates for a sample of 15 countries over the period 1975--1989. In order to see whether these empirical relationships are...

Do high levels of human capital foster economic growth by facilitating technology adoption? If so, countries with more human capital should have adopted more rapidly the skilled-labor augmenting technologies becoming available since the 1970’s. High human capital levels should therefore have...

This paper advances a highly tractable model with search theoretic foundations for money and neoclassical growth. In the model, manufacturing and commerce are distinct and separate activities. In manufacturing, goods are efficiently produced combining capital and labor. In commerce, goods are...