R & D-Based Models of Economic Growth
指出许多研发驱动增长模型预测的规模效应与工业化国家的时间序列证据不符，并提出了修正的Romer模型，其中长期增长率仅取决于外生参数，包括人口增长率。
This paper argues that the 'scale effects' prediction of many recent R&D-based models of growth is inconsistent with the time-series evidence from industrialized economies. A modified version of the Romer model that is consistent with this evidence is proposed, but the extended model alters a key implication usually found in endogenous growth theory. Although growth in the extended model is generated endogenously through R&D, the long-run growth rate depends only on parameters that are usually taken to be exogenous, including the rate of population growth. Copyright 1995 by University of Chicago Press.