R&D-based Growth in the Post-modern Era

Abstract

Conventional R&D-based growth theory suggests that productivity growth is positively correlated with population size or population growth, an implication which is hard to see in the data. Here we integrate R&D-based growth into a unified growth setup with micro-founded fertility and schooling behavior. We then show how a Beckerian child quality-quantity trade-off explains why higher growth of productivity and income per capita are associated with lower population growth. The medium-run prospects for future economic growth - when fertility is going to be below replacement level in virtually all developed countries - are thus much better than predicted by conventional R&D-based growth theory.R&D, unified growth theory, declining population, fertility, schooling, human capital, post-modern society.