from the university of bork has set up some items at a fake crime scene he wants them to be stolen. he aims to use what's known as the guilty knowledge test to show that breeding poll . heart rate and skin color activity can be significant. the talk is intense but as yet often each day it a guilty knowledge test is based on the idea that you don't detect the lie itself and so you don't ask a question like did you kill so and so or did you steal the cash box instead you ask about certain details of the crime details that only the perpetrator can know can count. shows these details to the test subject. a recorded interrogator asks if she recognizes the objects on the screen she supposed to deny it all a cloth bag. no. american read her reactions on the monitor. a document folder. no whenever she recognizes something the reading changes. mobile phone. this becomes particularly clear with the picture of the stolen mobile phone. the test person begins perspiring more. than you know if you recognize things you've seen before or experienced in the context of a criminal offense for example