The paper analyzes an economy with an agrarian and an industrial sector. Demand is determined by Engel's Law. Population growth follows a non--linear income dependent path according to the theory of demographic transition. In case of decreasing returns to scale in the agrarian sector the...

The paper investigates an economy where parents observe wage rates, interest rates, and child mortality and decide about savings and the quantity and quality of their children. Expenditure on child quality causes human capital accmulation as an external effect. If mortality is high parents...

This paper provides a uni?ed growth theory, i.e. a model that explains the very long-run economic and demographic development path of industrialized economies, stretching from the pre-industrial era to present-day and beyond. Making strict use of Malthus’ (1798) so-called preventive check...

This study provides a unified growth theory to correctly predict the initially negative and subsequently positive relationship between child mortality and net reproduction observed in industrialized countries over the course of their demographic transitions. The model captures the intricate...