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 in questioning the validity of the tests, saying too much weight is placed on what they call junk science, The Denver Post reported https://goo.gl/SDoHPg . They also say a profitable cottage industry has grown up around polygraphing sex offenders in the state. Full Article