Textbook Notes (381,082)
CA (168,341)
UTSC (19,304)
Psychology (10,047)
PSYC39H3 (204)
Chapter 4

chapter 4 notes

4 Pages
131 Views

Department
Psychology
Course Code
PSYC39H3
Professor
David Nussbaum

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Chapter 4- Deception
The polygraph technique
Polygraph: a device for recording an individuals autonomic nervous system responses
Upper chest and abdomen electrodes- breathing
Sweat- galvanic skin response
Heart rate- blood pressure
Application of the polygraph test
Criminal investigations
Help verify whether a crime has occurred
Insurance companies- verify the claims of the insured
Assess and monitor sexual offenders on probation
Polygraph disclosure tests: polygraph tests that are used to uncover information about an
offenders past behaviour
Whether the offender is violating the conditions of probation
Evidence of risky behaviour- such as sexual fantasies about children
Periodic testing of employees to identify those engaged in theft or using drugs at work
General screening tool
Types of polygraph tests
Relevant/irrelevant test: type of polygraph test that includes relevant questions concerning
the crime being investigated and irrelevant questions that are unrelated to the crime
Problem: nearly everyone responds more to the relevant questions than to the irrelevant
questions
Control question test: type of polygraph test that includes irrelevant questions that are
unrelated to the crime, relevant questions concerning the crime being investigated, and control
questions concerning the persons honesty and past history prior to the event being investigated
Pretest interview: the polygraph examiner develops the control questions, learns about the
background of the suspect, and attempts to convince the suspect of the accuracy of the
polygraph set
Guilty knowledge test: type of polygraph test designed to determine if the person knows
details about a crime
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Description
Chapter 4- Deception The polygraph technique Polygraph: a device for recording an individuals autonomic nervous system responses Upper chest and abdomen electrodes- breathing Sweat- galvanic skin response Heart rate- blood pressure Application of the polygraph test Criminal investigations Help verify whether a crime has occurred Insurance companies- verify the claims of the insured Assess and monitor sexual offenders on probation Polygraph disclosure tests: polygraph tests that are used to uncover information about an offenders past behaviour Whether the offender is violating the conditions of probation Evidence of risky behaviour- such as sexual fantasies about children Periodic testing of employees to identify those engaged in theft or using drugs at work General screening tool Types of polygraph tests Relevantirrelevant test: type of polygraph test that includes relevant questions concerning the crime being investigated and irrelevant questions that are unrelated to the crime Problem: nearly everyone responds more to the relevant questions than to the irrelevant questions Control question test: type of polygraph test that includes irrelevant questions that are unrelated to the crime, relevant questions concerning the crime being investigated, and control questions concerning the persons honesty and past history prior to the event being investigated Pretest interview: the polygraph examiner develops the control questions, learns about the background of the suspect, and attempts to convince the suspect of the accuracy of the polygraph set Guilty knowledge test: type of polygraph test designed to determine if the person knows details about a crime www.notesolution.com
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