dave bryant defends the tool he uses for his work adding the majority of police departments and even the cia use the polygraph in europe however it's bad because of it's on reliable results. steve tourism is a law professor in chicago he's an expert in interrogation techniques and has been able to obtain the freedom of several suspects on death row life sentences often their alleged confessions he's one of the polygraphs fiercest critics. they hope the person up to this machine they tell them that this machine is infallible and it's objective and it's neutral it doesn't know you this machine doesn't have any stake in whether or not you're innocent or guilty. and when they fail that polygraph test or better yet when they're told they fail that polygraph test it brings them down to a place of hopelessness where it's easier to get them to confess and we have numerous cases where police officers lie about polygraph results and get innocent people to confess. knowing the polygraph is not always dependable scientists have been urgently researching brain i and voice patterns instead so far

dave bryant defends the tool he uses for his work adding the majority of police departments and even the cia use the polygraph in europe however it's bad because of its on reliable results. is a law professor in chicago he's an expert in interrogation techniques and has been able to obtain the freedom of several suspects on death row life sentences often their alleged confessions he's one of the polygraphs fiercest critics. they hope the person up to this machine they tell them that this machine is infallible that it's objective and it's neutral it doesn't know you this machine doesn't have the stake in whether or not you're in the center guilty. and when they fail that polygraph test or better yet when they're told they fail that polygraph test it brings them down to a place of hopelessness where it's easier to get them to confess and we have numerous cases where police officers lie about polygraph results and get innocent people to confess. knowing the polygraph is not always dependable scientists have been urgently researching brain i and voice patterns instead so far without much