Rising Extreme Poverty in the United States and the Response of Federal Means-Tested Transfer Programs, Kathryn Edin, June 2013, Paper. "This study documents an increase in the prevalence of extreme poverty among US households with children between 1996 and 2011 and assesses the response of major federal means-tested transfer programs. Extreme poverty is defined using a World Bank metric of global poverty: $2 or less, per person, per day. Using the 1996–2008 panels of the Survey of Income and Program Participation (SIPP), we estimate that in mid-2011, 1.65 million households with..." May require purchase or user account. Link