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Flashcards in Chapter 3 Deck (24):
1

deception

essential lubricant of social interaction

2

evolutionary perspective

survival technique learned through adaptation

3

2006 charles bond study

lie detecting powers or more than 24,000 people.
people can do better than chance 54% in telling the truth from a lie
- in court is is harder to detect a lie

4

Spotting a liar

Police find themselves correct about 75% of the time
Overconfidence can out high pressure on the suspect and promote a false confession

5

Lairas sterotype

stereotypes are not always accurate

6

Polygraph derives from Poly and graph

Poly - many
Graph - write

7

Who developed the polygraph

William M. Marston

8

Polygraph protection act of 1988

prohibited most private employers from using polygraphs

9

Polygraph process

Must be combined with systematic questions

10

Relevant-irrelevant test (RIT)

questions split between non-arousing and arousing if the person committed the crime.
focuses on the differences in strength of physiological responses
high rates of false positives result

11

Founder of RIT Process

John A. Larson

12

Comparison question test (CQT)

Most frequently used
Lying shows physiological elevations compared to non lies
relies on examiners skills
broad questions

13

Positive comparison test (PCT)

asks the same question twice
person is told to tell the truth first and lie the second response

14

Weaknesses of polygraph

Inconsistency from test to test
some people know how to fool the test

15

Accuracy of polygraph

pretty accurate but need to take into account third party variables
polygraph alone is not accurate
23 states ban the use of evidence from one in the trial
NM allows it
encouraged to use it before trial to know whether to pursue a suspect or not

16

Guilt Knowledge Test (GKT)

Alternative to hypothesis
Detects facts through psysiological arousal only a guilty person should know

17

David Lyyken

Developed Guilty Knowledge Test (GKT)

18

fMRI Functional Magnetic Resonance Imaging

image taken of the brain based upon the action or the oxygen being used in every part of the brain
snapshot every 2 seconds
Expensive, Timely, not portable, and few studies and results.

19

Part of brain that activates the most when lying

Prefrontal Cortex (Behind the forehead and parietal cortex (Near rear of brain

20

EEG Electroencenphalogram

Reads neural impulses continuously
fMRI finds where the activity occurs but EEG knows when it occurs
100 dime sized electrodes on a net around the scalp

21

What does EEG Measure

Brain waves that identifies deception

22

Lawrence Farwell

Brain fingerprinting

23

Mayo Clinic and Honeywell Laboratories

shifts in heat on the human face through high def infrared thermal imaging
increased blood flow near eyes when someone is being deceptive

24

Laser Doppler Vibrometry

near-infrared light beam aimed at neck a few 100 ft away finds physiological stress in breath, heart-rate and muscles.