“Can Polygraphs Detect Spies? Panel Says No, and Worries About Blemishing the Innocent”
Washington Post staff writer Shankar Vedantam reports. Excerpt: Polygraph tests are ineffective in catching spies and have probably tarred thousands of innocent government employees and applicants with unwarranted suspicion, a top scientific panel has concluded. While lie detectors may have some utility in criminal investigations, where subjects can be tested on specific questions about a …