Why Longer Prison Sentences Don’t Work

Conversations with Coleman

The Free Press

Philosophy, Society & Culture

4.8 • 2K Ratings

🗓️ 23 February 2026

⏱️ 64 minutes

🔗️ Recording | iTunes | RSS

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Summary

Is our criminal justice system broken, and can it be fixed? Jennifer Doleac is an economist, the executive vice president of criminal justice at Arnold Ventures, and the host of the Probable Causation podcast. Today she discusses her new book, The Science of Second Chances: A Revolution in Criminal Justice. Doleac studies what actually deters crime and what merely feels tough, and she argues that the familiar divide between “root causes” and “lock them up” misses the point. She explains why longer prison sentences often fail to change behavior, why the certainty and swiftness of punishment matters more than the severity, and how economists think about incentives and unintended consequences. The Free Press earns a commission from any purchases made through all book links in this article. Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:31.0	Welcome to another episode of Conversations with Coleman.
0:33.9	My guest today is Jennifer Dolyak.
0:36.4	Jennifer is an economist whose research focuses on crime and criminal justice policy.
0:41.7	Her new book is called The Science of Second Chances, a Revolution in Criminal Justice.
0:46.6	In this episode, we talk about why economists tend to produce the best research about crime.
0:51.6	We talk about whether people commit crime because of human nature or because of social and economic causes. We talk about crime. We talk about whether people commit crime because of human nature or because
0:55.2	of social and economic causes. We talk about Michelle Alexander's famous book, The New Jim Crow,
1:01.1	and what it gets wrong. We talk about why hiring more policemen is a much better way to reduce crime
1:06.7	than doling out longer prison sentences. We talk about why ban the box doesn't work, and much more.
1:13.4	So without further ado, Jennifer Doleak.
1:21.9	Okay, Jennifer Dolec, thanks so much for coming on my show.
1:27.5	Thank you so much for having me.
1:29.8	As I was just telling you before we started, I've been following your work for a very long time.
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