Definition: An endogenous growth macro model is one in which the long-run growth rate of output per worker is determined by variables within the model, not an exogenous rate of technological progress as in a neoclassical growth model like those following from Ramsey (1928), Solow (1956), Swan (1956), Cass (1965), Koopmans (1965).
Influential early endogenous growth models are Romer (1986), Lucas (1988), and Rebelo (1991).
Hulten (2000) says "What is new in endogenous growth theory is the assumption that the marginal product of (generalized) capital is constant, rather than diminishing as in classical theories." Generalized capital includes the result of investments in research and development (R&D). (Econterms)
