It is argued that due to their general instability dynamic optimization models cannot be used as positive theories of economic growth. The argument is substantiated by (numerical) examples. A simple rule of thumb is provided as an alternative to the RKC model. This rule is shown to perform well...

We analyze the stability and dynamics of an overlapping generations model with imperfectly competitive labour markets. By focusing on the right-to-manage wage bargaining we assume that wage is negotiated after the capital stock decision. With Cobb-Douglas utility and production functions the...

In this note we compare the laissez-faire steady-state solution in the Howitt and Aghion (1998) model to the social optimum. The analysis offers several new insights in comparison to the welfare analysis in Aghion and Howitt (1992). We find various new distortions between private and optimal...