Testing the significance of income distribution changes over the 1980s business cycle: a cross-national comparison
用核密度估计描述美国和英国1980年代商业周期中家庭实际收入分布的变化，确认收入不平等加剧且中间部分被压缩，统计检验显示两尾质量显著增加，但上尾增长最大。
Using kernel density estimation we describe the distribution of household size-adjusted real income and how it changed over the business cycle of the 1980s in the United States and the United Kingdom. We confirm previous studies that show income inequality increased in the two countries and the middle of the distribution was squashed down. Using a series of statistical tests, however, we find that while the mass in both tails of the distribution increased significantly in both countries over the period, by far the greatest gains were in the upper tail. Copyright © 1999 John Wiley & Sons, Ltd.