I study the effect of technical change on the equilibrium profit rate in Classical-Marxian models of economic growth with alternative closures. In each model, capitalists adopt a new technique of production only if it will increase the profit rate given their expectations about the movement of...

This paper proposes somatic capital as a hitherto neglected variable in the discussion of factors impacting the timing of the Neolithic transition. It develops an evolutionary growth theory that builds on the trade-off between the quantity and the quality of offspring. The theory suggests that...