CO: Pricey polygraph testing of sex offenders under fire as critics target accuracy, expense

Colorado has spent more than $5 million to administer polygraph tests on convicted sex offenders over the last seven years, despite concerns that the results are so unreliable that they can’t be used at trial. Polygraphs, often called lie-detector tests, are used to determine which prisoners convicted of sex offenses are suited for release by probing their sexual history, attitudes about their crimes and whether they are committing new offenses. They also guide how offenders on parole or probation are supervised. But a bipartisan group of legislators has joined offenders…

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