The Next Big Idea Daily When You Were Born Matters More Than You Think
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Feb 19, 2026 Ben Austen, a journalist reporting on parole and long-term incarceration. Robert Sampson, a Harvard sociologist studying crime, justice, and cohorts. They discuss how year of birth reshapes crime risks and life paths. Small cohort differences yield big effects. They explore parole’s limits, how institutions and social change drive trends, and why risk tools can mislead.
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Cohort Bias Skews Risk Assessments
- Risk tools trained on older cohorts overpredict arrest risk for younger cohorts, creating cohort bias.
- Sampson found nearly 90% overprediction, meaning records encode historical context that skews predictions.
The Character Trap Distorts Judgments
- The "character trap" treats criminality as stable while ignoring changing social environments.
- Sampson shows traits like self-control predict differently across cohorts, undermining static character assumptions.
Two Men Who Lived Parole's Limits
- Ben Austen follows Johnny Veal and Michael Henderson, imprisoned since the 1970s, who repeatedly faced parole hearings.
- Their decades-long parole struggles illustrate how unclear our reasons for punishment really are.
