Deception Detection Flashcards
Why is deception detection necessary?
Knowledge of the truth is an essential requirement for the administration of criminal justice.
Enumerate methods of deception detection.
(1) Devices which record the psycho-physiological response
(2) Brain function
(3) Demeanor/behavior
(4) Use of drugs to try to “inhibit the inhibitor”
(5) Hypnotism
(6) By observation
(7) Scientific interrogation
(8) Confession
How does a polygraph work?
The fear of the subject when not telling the truth activates the sympathetic nervous system to a series of automatic and involuntary physiological changes which are recorded by the instrument.
What are the three phases of examination in a polygraph examination?
(1) Pre-test
(2) Actual interrogation and recording
(3) Post-test interview
How do you say that a person in lying in a polygraph test?
If the person is lying, he has more reaction on relevant questions. If he is not lying, he has more reaction to control questions.
