A growth model is set up where war, population, and technology interact endogenously, capturing some trends observed throughout long-run human history. Agents compete for food for their survival. In environments with scarce resources -- meaning high population density, and/or low levels of...

This article presents a group of exercises of level and growth decomposition of output per worker using cross-country data from 1960 to 2000. Its shown that at least until 1975 factors of production ( capital and education) were the main cause of output dispersion and that productivity variance...

In developing economies, substantial economic activity takes place in the informal labor market, beyond the reach of government policy. Labor market policies, which by definition apply only to the formal-sector labor market, then have important spillover effects. The relative sizes of the...

We model an environment in which different vintages of capital with their different productivities coexist. A reduction in the cost of investment induces investment in new capital which raises both measured capital and measured productivity simultaneously. We calibrate this model to...