Exam 2

Question 1

Methods of lie detection

Answer 1

non-verbal behaviors
analysis of verbal indicators
physiological

Question 2

Emotional explanation of lying

Answer 2

lying evokes guilt and fear

predict increase in body movements, gaze aversion, speech hsistation. voice pitch

Question 3

Cognitive explanation for lying

Answer 3

complex, must make stuff up

Predicts increase in: gaze aversion speech errors and FEW hand/arm movements

Question 4

Attempted control to lying

Answer 4

impression management control their behavior to refrain from giving clues away
DECREASE in body movements speech errors and gaze aversions

Question 5

Non-Verbal behaviors

Answer 5

results of studies::
truth tellers mau experience same process as liars
incorrect beliefts about cues to deception
artifact of deception/ not real life stakes

Question 6

Mann Virji study

Answer 6

examined non verbal behaviors during police interviews . Found that suspect DID NOT follow sterptypical nervous behaviors e.g,

gaze aversion/ increased speech body movement/hesitation

Lying did yield:
Longer pauses
decrease in hand and arm movement
fewer eye blinks

Question 7

Liars stereotype

Answer 7

prevalent but mistaken cues that are signs of deception

Question 8

Analysis of Verbal indicators

Answer 8

method of detection

Question 9

7 verbal indicators

Answer 9

1. Negative Statements and complaints (due to guilt/anxiety)
2. Overgeneralized statements e.g., always, never nobody etc
3. Irrelevant information: attempts to make good impression or substitute for info that deceiver cannot supply
4. self-references- e.g., removing themselves from lie due to guilt (no I me or mine)
5. direct answers: “I like john” rather than I like johns company
6. length of spoke words: liars give shorter responses due to guilt and anxiety
7. plausible statements: to do complexity in creating a lie

Question 10

Research of VI

Answer 10

inconclusive in regards to negative statements, irrelevant information and overgeneralized statements.

Question 11

Forsenic V.I

Answer 11

Produced CBCA
only requires written statement
most popular technique in Europe

Question 12

CBCA main criteria

Answer 12

logical statement
unstructured production
quantity of detail
reproduction of converstation
unusal details
admitting lack of memory

Question 13

Results of CBCA studies

Answer 13

in general CBCA can discriminate between true and deceptive statements

Question 14

CBCA Problems

Answer 14

Coaching
Childs Age
False accounts that are subjectively true.

Question 15

How can liars behavior be predicted

Answer 15

verbal cues if under the right conditions. CBCA has been found to be accurate at a higher rate than other methods such as non-verbal behaviors and physiological.

Question 16

Current techniques in forensic to detect lies

Answer 16

CBCA: statement analysis that looks at different crieterion
Polygraph test: measures physiological reactions with assumed differences . validity must be believed. it measures breathing heart rate. ask y/n questions. physioligcal reaction is compared and anaylized.
Brain fingerprinting: memory of crime stored in brain, brain wave P300 shows memory.

Question 17

Two types of polygraph question techniques

Answer 17

control questions

Guiltiy knowledge test

Question 18

Control questions

Answer 18

neutral revelant control

three types of questions lack of saliency between control and revelant questions

Question 19

Brain finger printing

Answer 19

lawerence farwell: collection of crime scence photos, brain waves while looking at photos.
Photos and words are paired together/ target
irrevlant photos/words
probe picture words

Question 20

Brain finger printing accuracy

Answer 20

120 subjects in 4 studies had 100% accuracy