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...

We provide a systematic analysis of the properties of individual returns to wealth using twelve years ofpopulation data from Norway's administrative tax records. We document a number of novel results.First, during our sample period individuals earn markedly different average returns on their...