Income polarization in the United States by Ali Alichi, Kory Kantenga and Juan Sole published by IMF (6/2016). “The paper uses a combination of micro-level datasets to document the rise of income polarization- what some have referred to as the ‘hollowing out’ of the income distribution – in the United States, since the 1970s. While in the initial decades more middle-income households moved up, rather than down, the income ladder, since the turn of the current century, most of polarization has been towards lower incomes…”
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