一、引言经济增长理论自80年代中期以来在经济学领域获得了新的生机。以罗默(Paul Romer)和卢卡斯(Robert Lucas)为代表的内生经济增长(endogenous economic growth)理论的诞生是传统经济增长模型无法解释世界各国经济增长的结果。根据传统理论,长期经济增长率将最终取决于人口增长和技术进步等外在因素,而各国的人均资本、人均产量和人均消费将趋 I. Introduction Economic growth theory has gained new vitality in the field of economics since the mid-1980s. The birth of the theory of endogenous economic growth, represented by Paul Romer and Robert Lucas, is the result of the failure of the traditional model of economic growth to explain the economic growth of various countries in the world. According to the traditional theory, the long-term economic growth rate will ultimately depend on such external factors as population growth and technological progress, while per capita capital, per capita output and per capita consumption in various countries will tend to