Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

Exercise 33

The instrument that is sometimes referred to as a lie detector is correctly called a (a) _____; it measures a person's heart rate, blood pressure, respiration, and emotionally induced hand sweating, which is called the (b) _____ response. To determine whether a person is telling the truth or a lie, the examiner compares the person's physiological responses to (c) _____ and questions. The basic problem with lie detector tests is that no pattern of physiological responses has been specifically associated with lying. This means that many emotions can cause increased physiological responses that make the person appear to be lying. Because of the relatively high (d) _____ rate, evidence from lie detector tests is not admitted in most courts of law. The newest method to detect lies involves using brain scans to detect changes in thinking and associated (e) _____ that occur when people lie.