The paper presents a model where the interplay between fertility, child labour, and education can explain economic stagnation when parents live in an environment of high child mortality. If in contrast child mortality is low, the solution of the parental decision problem leads to perpetual...

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...