Add Yahoo as a preferred source to see more of our stories on Google. American inventor John Larson, right, demonstrates the operation of a polygraph at Northwestern University in Evanston, Illinois, ...

The OIG has found that the way the FBI handles unresolved employee polygraph results may lead to security and operational vulnerabilities. DoJ Inspector General Michael E. Horowitz announced that a ...

FBI employees who failed polygraph tests to determine truthfulness still accessed classified information, making the bureau vulnerable to security breaches, Department of Justice Inspector General ...

Polygraph examiners ask a standard list of questions about drug use, criminal history, foreign contacts and mishandling of classified information. After the exam, an analyst scrutinizes the results ...