This article offers a theory of economic growth, stagnation, and demo-economic transition that originates from external effects of child-bearing, health expenditure, and education under endogenous mortality. Facing a hierarchy of needs, parents always consume and want to have a family. Child...

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...

Human capital accumulation is introduced in a growth model with R\&D-driven expansion in variety and quality of intermediate goods andknowledge spillovers from both research activities. Economic growth is no longer uniquely tied to population growth as previous growth models without scale...