“The idea that this is still women just delaying childbearing gets harder and harder to buy with each year. Right now, it's like 50% of 30-year-old women have not initiated childbearing.”
Freakonomics Radio · Ideas & Essays · November 2026
Context
Dubner asked Kearney to persuade him that falling birth rates among women in their 20s aren't just a matter of timing. She says demographers expected a rebound after the Great Recession that never came.
Transcript
…women in their 20s and 30s now compare to the earlier birth cohorts. And there, what we see is that there's been a decrease in the share of women who have initiated childbearing basically through the ages we can observe them. Now, it's complicated because they're not done with their childbearing.
…has fallen a lot, which everyone agrees is a good thing. But then when you get into the 20s and even 30s, most people agree it's a bad thing. Persuade me that the drop that we're seeing in, let's say, women in their 20s is not a timing issue and that more of them will have children, but later.
For a long time, sort of sanguine demographers were making this point about the decrease post-2007. Oh, this is just people responding to the recession and then it'll bounce back. And that never happened. We're talking about over 15 years of year-over-year decrease. Let's set aside the COVID pandemic where there was a, you know, a bust and then a rebound. The idea that this is still women just delaying childbearing gets harder and harder to buy with each year. Right now, it's like 50% of 30-year-old women have not initiated childbearing. They're childless. Let's be clear. I had three kids in my 30s. I realize that's possible. But we also know there's a biological constraint here. The idea that we're going to get down to 10% women childless by the time they're 44 would take an unprecedented, perhaps even impossible, increase in sort of post-age 30 fertility for that to happen.
You're saying in previous recent cohorts, only 10% of women age 44 in the U.S. did not have children. Is that right?
Between like 10 and 15%.
Got it. And you're saying that to go from 50% now childless at 30 to only 10% or even 15% at age 44 is a gamble that no gambler would like.
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