Summary: In Episode 125, host Chris Hadnagy speaks with William Ortiz, a federal polygraph examiner who worked in the FBI for decades. 3 Key Points: Polygraph is a tool alongside non-verbals and behavior analysis questions to determine whether someone is telling the truth. Being nervous is part of taking the polygraph test. When you ask someone a question, pay attention to whether they answer it. Then ask more questions to see where they lead.
