Difference between kass coopmans ramsey model and solow growth model
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Ramsey - Cass - Koopmans model is a neoclassical model of economic growth. It is different from the Solow - Swan model. The main difference is that according to the former the choice of consumption is explicity microfounded at a point of time, therefore it endogenizes the savings rate. So unlike the Solow - Swan model the saving rate might not be constant during the transition to the steady state in the long run.
The Kass-Coopmans-Ramsey model of economic growth can be described as endogenous while the Solow- growth model is exogenous.
An endogenous model is most concerned with internal factors of an economy that it uses to predict growth e.g. In the Kass-Coopmans-Ramsey model, they consider savings as internal factor in the growth of the economy while an exogenous growth model is concerned with external factors for growth of an economy. The Solow growth model considers savings and technological growth as external factors.