Are the rich getting richer and the poor poorer?
Various measures of income distribution indicate that the proportions of income accuring to the top decile of the population is getting larger. But Kevin Brancato at Truck and Barter notes that "percentiles are not people." In other words, we need to take a look at what happens to individuals through time as well as what happens to percentiles, or deciles, or quintiles. Income mobility is an important dimension of the income distribution issue, and there is a lot of mobility in the U.S. through time. He posts here: "Percentiles are not People ". Brancato's post gives insights into the measurement and definition problems in this topic area, and has lots of links to other materials.