Did market income or government transfers drive the largest poverty declines?
Core argument: Absolute poverty in the United States fell from 48.5% to 19.5% between 1939 and 1963, a 29 percentage point reduction that occurred before the major expansion of safety net programs such as SNAP, Medicaid, and refundable tax credits.
The major innovation of this paper is to extend a comprehensive and consistent measure of poverty back to 1939, exploiting a quarter century of data before the War on Poverty began. From 1939-1963, absolute poverty fell from 48.5% to 19.5%, a 29 percentage point reduction. This pre-war progress provides important context for previously documented success in reducing poverty afterwards, since it occurred before the major expansion of safety net programs like SNAP, Medicaid, and refundable tax credits. During that 1939–1963 period, it was the growth of market income rather than government transfers net of taxes that reduced poverty rates. In fact, poverty fell no faster in the 24 years after the War on Poverty was declared than in the 24 years before, even when applying the same initial poverty rate to both periods. Our results do not imply that poverty would have necessarily continued to fall at the same rate after 1963 in the absence of the War on Poverty. A pre versus post comparison is conflated by contemporaneous macroeconomic and social changes, such as slower economic growth in the post-1963 period. Conversely, any claim that the War on Poverty was necessary for poverty to decline should be accompanied by an attempt to understand why it had already been falling in the quarter century before it was declared.
