A Study of the Historical Changes in Global Income Distribution : With special reference to Asian countries

杉原在2000年6月在美国波士顿举行的世界历史协会年会上和2000年8月在奥斯陆举行的第19届国际历史科学大会上发表了论文，并报告了该项目的研究结果。在伦敦与伦敦的区域研究专家进一步讨论后，他对论文进行了修改，并于10月作为工作论文发表。早些时候，他还在一家全国性日报上发表了一篇短文，以吸引更多的读者。这些出版物的主要发现是，尽管全球收入不平等在1820年至20世纪中叶之间逐渐恶化，但这种趋势在20世纪下半叶得到了遏制。他认为，具有全球意义的历史事件，如工业革命，必须根据这一发现来解释。Ikemoto继续输入和分析最初由Maddison教授编制的数据，并计算了1820年至1990年期间的基尼系数。他把历史分为几个时期，试图解释趋势和变化。他特别关注了东亚的高速增长，虽然暂时扩大了区域内的收入差距，但最终对减少全球收入不平等做出了贡献。Ikemoto的一份未发表的手稿将被纳入我们的报告，并将在不久的将来出版。通过频繁的会面和交流，两位研究者试图以连贯的方式解释180年期间的长期趋势和战后几年的快速变化这两个重要发现。

Sugihara read a paper in the annual conference of the World History Association at Boston in June 2000 and the 19^<th> International Congress of Historical Sciences at Oslo in August 2000, to report the findings of this project. After further discussion in London with area studies experts in London, he revised the paper and published it as a working paper in October. Earlier on he also published a short piece in a national daily, to reach wider audience. The main finding of these publications is that, while global income inequality progressively worsened between 1820 and around the middle of the twentieth century, this tendency was arrested during the second half of that century. He argued that historical events of global significance, such as the industrial revolution, must be interpreted against this finding.Ikemoto continued the input and analysis of the data, originally compiled by Professor Maddison, and calculated the Gini coefficient for the period from 1820 to 1990. By dividing into several periods, he attempted to interpret trends and changes. In particular, he focused on the way in which the high-speed growth of East Asia, while temporarily widening the income gaps within the region, eventually contributed the reduction of global income inequality. An unpublished manuscript by Ikemoto will be included in our report, and will be published in the near future.Through frequent meeting and communication, the two researchers tried to interpret the two important findings, long-term trend over the period of 180 years and rapid changes in the postwar years, in a coherent way.