罗默模型的核心是技术进步。按照罗默的分析,似乎一国的研究人员越多,经济增长就越快。其隐含的假设是研究人员的水平相同,这与实际情况明显不符。巴罗等人对内生增长模型进行了修改,提出了行业差别性的“胜者全得”概念,并用来分析一国的经济追赶,提出了产生追赶的模仿技术增长公式,还指出了“模仿陷阱”的存在。在此基础上对日本经济长期衰退的原因及复苏的可能性进行了分析。 The core of the Romer model is technological progress. According to Romer's analysis, it seems that the more researchers in a country, the faster the economy will grow. The implicit assumption is that the researchers at the same level, which is obviously inconsistent with the actual situation. Barrow et al. Revised the model of endogenous growth and proposed the concept of “winner-all” in industry differentiation. It also used the analysis of a country's economic catch-up and proposed an imitation technology growth formula that gave rise to catch-up. It also pointed out that “ Imitation trap ”exists. On this basis, the paper analyzes the reasons for the long-term economic recession in Japan and the possibility of recovery.