Are developing countries catching up?
回顾20世纪以来全球不同地区的追赶型增长，特别是南方国家（发展中国家）与北方国家（发达国家）之间人均收入差距的缩小趋势，对理解当代世界经济格局有参考价值。
This paper reviews catch-up growth in various parts of the world, especially in the twentieth century, with a particular focus on what this implies for the Global South. In 1950, US per capita national income, adjusted for purchasing power, was nearly five times the world average. Since then, Western Europe and Japan have closed their per capita income gaps with the USA. East Asia, South Asia and some other developing countries have also started to close their gaps with the West in recent decades. Thus, after well over a century of growing international economic disparities or divergence, the world has witnessed an era of uneven catching up with the North in parts of the South since the mid-twentieth century.