Skip to main content

Research Archive

January 6, 2026

The Middle Class Is Shrinking Because of a Booming Upper-Middle Class

Populists on both the political left and right routinely claim that the middle class has been hollowed out. These claims, to the extent they are based on evidence, rely on a relative definition of the middle class, such that if income doubles for every family, the middle class does not grow. Using an absolute definition of the middle class, we find that the “core” middle class has shrunk, but only because more families have become upper-middle class over time.

November 30, 2025

Our Economy Is Not Stagnant

Both sides of the political aisle are misleadingly bleak about the state of the American…