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Research Archive

March 25, 2026

Compiling My Work on Work Incentives

At the American Enterprise Institute Center on Opportunity and Social Mobility, which I run, we’re…

March 25, 2026

Opportunity Book: A New Tool for Connecting Policymakers with Innovative Ideas

Today the Center on Opportunity and Social Mobility at the American Enterprise Institute (AEI) is…

March 20, 2026

Re-Centering Family Structure in Opportunity Insights’ Work on Intergenerational Mobility: How Important Is Single Parenthood?

Over the past decade, Opportunity Insights (OI) has transformed the study of intergenerational mobility through innovative uses of administrative data, reshaping the public and scholarly understanding of the factors that affect children’s life prospects. One consistent finding in this literature is the strong association between family structure, especially single parenthood, and upward mobility, though it has received relatively little sustained attention.

February 26, 2026

Young Men’s Earnings over the Long Run – An Update

Let me start with the chart: Median pre-tax earnings of men ages 25-29 rose 24…

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.

December 9, 2025

Has Marriage Fallen Because Young Adults Can’t Afford Homes?

If you’ve been on social media in the past ten years, you’ve surely seen it:…

December 1, 2025

Apocalypse Not

Now we’re getting somewhere! Thanks to the person who posts on X.com using @MTSInsights, I know where…

November 30, 2025

Our Economy Is Not Stagnant

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

November 27, 2025

The Real Math of Survival?

Earlier today (much earlier…) I posted a critique of the new viral post by Michael W. Green claiming that…

November 26, 2025

How Not to Redefine Poverty

I tried to let it go. Someone mentioned the essay to me on Monday, when…

October 15, 2025

Don’t Choose Your Own Adventure: Understanding Middle-Class Earnings Trends

What should we make of earnings trends in the United States? People can differ in…

August 8, 2025

Revise the Messenger

The Bureau of Labor Statistics (BLS) reported out the latest employment numbers on Friday, August 1, finding…