The empirics of economic growth over time and across nations: a unified growth perspective

Abstract This research develops an expanded unified growth theory that incorporates the endogenous accumulation of physical capital, population, human and technology. The model a complementarity between capital can be extended to multi-country setting with international technology diffusion. analytical characterization mechanisms behind observed patterns long-run comparative development delivers consistent explanation for large set seemingly unrelated empirical facts. A quantitative version matches various regularities dynamics have previously been studied in isolation. findings also shed new light on role demographic transition convergence patterns, specification cross-country regressions, spillovers, secular stagnation debate.