PSYCH230 Chapter Notes - Chapter 4: Malingering, Polygraph, Ground Truth

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH230
• Professor: John Rempel

Document Summary

Describe the most common types of errors made by the comparison questions test (cqt) and the concealed information test (cit) Describe physiologically based alternatives to the polygraph, including event-related brain potentials and functional brain-imaging techniques. Outline the verbal and nonverbal characteristics of deception. Define malingering and list the three explanatory models of malingering. Differentiate between the types of studies used to examine malingering. Types of polygraph tests: comparison question test (cqt): consists of three types of questions: irrelevant, comparison, and relevant. Not good at determining a suspects innocence: concealed information test: tests whether or not the suspect has knowledge about the details of a crime that only the guilty person would have. Not good at determining a suspects guilt. Ground truth: the knowledge of whether the person is actually guilty or innocent. Event-related brain potentials: brain activity measured by placing electrodes on the scalp and by recording electrical patterns related to presentation of a stimulus.