Abstract :
The Solow growth model assumes that labor force grows exponentially. This is not
a realistic assumption because, exponential growth implies that population increases
to infinity as time tends to infinity. In this paper propose replacing with a simpler
equation the Von Bertalanffy model. This model utilizes three hypotheses about
human population growth: (1) when population size is small, growth is exponential;
(2) population is bounded; and (3) the rate of population growth decreases to zero
as time tends toward infinity. With this model we can see the intrinsic rate of
population growth does not influence the long-run equilibrium level of capital per
labor force.