Huber, Evelyne; Stephens, John D. - 2013
variables are LIS data on market income inequality (measured by the Gini index) for households with a head aged 25 to 59 and the … inequality has increased in the United States because the country failed to invest sufficiently in education. The main … determinants of market income inequality are (in order of size of the effect) family structure (single mother households), union …