PSYC 2400 Chapter Notes - Chapter 4: Electrodermal Activity, Blood Pressure, Polygraph

• School: Carleton University
• Department: Psychology
• Course: PSYC 2400
• Professor: Shelley Brown

Document Summary

Instead limited its use to specific investigations of job-related wrongdoings. Irrelevant questions (personal background questions: during test, physiological responses to questions measured, questions repeated three to five times in different order, post-test interview in which test results are discussed, three possible outcomes: truthful, deceptive, inconclusive. Indicators of guilt such as physical evidence, eyewitness testimony or. Dna evidence are often not available therefore truth is harder to establish: two ways to establish ground truth developed: Judicial outcomes: problematic due to wrongful convictions and guilty people not being convicted, confessions, problematic because false confessions, confessions often elicited due to failing polygraph. Polygraph tests: accurate or not: debatable, many studies assessed accuracy but problems relying on mock-crime scenarios to estimate real-life accuracy, many innocent suspects were classified as inconclusive or are falsely identified as guilty. Scientific opinion: what do experts say: both scientific and public opinion are not very supportive of polygraph.