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Risk algorithm used widely in US courts is harsher than human judges

When deciding whether to let people await trial at home or in jail, US judges can use a risk score algorithm. But it often makes harsher recommendations than humans do

By Jeremy Hsu

22 November 2024

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Judges can use algorithms to help make their decisions

Frances Twitty/Getty Images

A US courtroom experiment suggests a popular risk assessment algorithm makes harsher recommendations than human judges – possibly because it is worse than people at anticipating which defendants will violate pretrial agreements.

“Some jurisdictions wanted to work with us to evaluate whether these recommendations are actually helping judges make a better decision,” says Kosuke Imai at Harvard University.

In the US criminal justice system, judges determine whether defendants will await trial at home or in…

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