G543 - Interviewing Suspects - Vrijj And Mann

Question 1

What methodology did they use?

Answer 1

Filed experiment

Question 2

How many police officers were in the sample?

Answer 2

99

Question 3

Where were they from?

Answer 3

Kent

Question 4

How many males and how many females were there in the sample of police officers?

Answer 4

75m 24f

Question 5

What was their mean age?

Answer 5

34.3

Question 6

How many detectives were there in the sample?

Answer 6

78

Question 7

How many trainers were there in the sample?

Answer 7

8

Question 8

How many traffic officers were there in the sample?

Answer 8

4

Question 9

How many uniform response officers were there in the sample?

Answer 9

9

Question 10

How many video clips did participants see? Of how many suspects?

Answer 10

54, 14

Question 11

What did the video clips show?

Answer 11

The suspects’ head and torso so expression and movement were visible

Question 12

What did the participants do after they had watched the video clips?

Answer 12

Filled out a questionnaire about their experience in detecting lies

Question 13

What did they do after they had filled out the questionnaire?

Answer 13

They then indicated whether they though the suspect was lying or telling the truth, and how confident they were in their decision

Question 14

What were they finally asked to do after indicating a lie or truth?

Answer 14

List the cues they had used to detect the lies

Question 15

Levels of accuracy were significantly greater than what?

Answer 15

Chance (50%)

Question 16

What was there no significant difference between?

Answer 16

Mean lie accuracy and mean truth accuracy

Question 17

What did experience in interviews correlate positively with?

Answer 17

Truth accuracy

Question 18

What was the most frequently mentioned cue to detect lying?

Answer 18

Gaze

Question 19

What the second most frequent cue used to detect lies?

Answer 19

Movements

Question 20

What was also mentioned in cues?

Answer 20

Vagueness, contradictions in stories and fidgeting

Question 21

What did levels of accuracy found in this study exceed?

Answer 21

Those found in other studies?

Question 22

What are the results found in this study highest for?

Answer 22

A group of ordinary police officers

Question 23

What do good lie detectors rely more on?

Answer 23

Story cues, than the more stereotypical belief that liars can be detected by covering the mouth or fidgeting

Question 24

What can police officers do above the level of chance?

Answer 24

Detect liars

Question 25

What do police officers often pay attention to?

Answer 25

The wrong cues

Question 26

What did they aim to test?

Answer 26

Police officers’ ability to distinguish truths and lies during police interviews with suspects