FBI & Polygraphs NPR's Barbara Bradley reports that the recent FBI spy scandal has caused the agency to consider testing its employees more often with polygraphs. The benefit is that a spy has less chance to pass information to the enemy. The cost is that a false-positive rate of about 15 percent can ruin the lives of innocent people.

FBI & Polygraphs

FBI & Polygraphs

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NPR's Barbara Bradley reports that the recent FBI spy scandal has caused the agency to consider testing its employees more often with polygraphs. The benefit is that a spy has less chance to pass information to the enemy. The cost is that a false-positive rate of about 15 percent can ruin the lives of innocent people.

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