sentences:  Conservative researchers and organizations have focused on the flaws of household income as a measure for standard of living in order to refute claims that income inequality is growing, is excessive or poses a problem.According to a 2004 analysis of income quintile data by the Heritage Foundation, inequality is less after adjusting for household size.Aggregate share of income held by the upper quintile (the top earning 20 percent) decreases by 20.3% when figures are adjusted to reflect household size.