Henry McKean from Newstalk joined Sian to find out a little about how polygraph testing works. 
Henry had been to The Ploughing Championship where Kite Entertainment were looking to find “good liars” for the Irish version of the television show “The Traitors”. This got Henry thinking: Are the Irish good at lying? And what happens in a lie detector test?
Click here to go to Newstalk link for the interview
Click here to go to the interview on Go loud player.