“…Further studies relying on IRS tax return data are, among others, Slemrod (1992), Feenberg and Poterba (1993), Bakija, Cole, andHeim (2012), andDeBacker et al (2013). Hoynes 2006 andEissa, Kleven, andKreiner 2008, among others). 3 A general conclusion from these studies is that total income inequality, i.e., inequality in pretax, post-transfer income rose sharply in the 1980s, and that this growth continued at a reduced pace in the 1990s and early 2000s.…”