Interviewing suspects
- Created by: CallumAusten
- Created on: 07-04-14 15:45
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- Interviewing Suspects
- Mann - Police officers ability to detect suspects lies
- Field experiment
- 99 Kent police officers
- P's asked to judge truthfulness of people in real life interviews
- P's shown 14 clips
- P's filled out questionnaire about their experience
- After each clip indicated if they thought it was the truth or a lie
- They then had to put how confident they were about their final decision and also the cues they used to detect lies
- P's shown 14 clips
- Results
- No difference between identification of lies or truth
- Experience in interviewing positively correlated with accuracy
- Most frequently used cue was gaze
- Conclusions
- Officers often paid attention to cues that are not necessarily indicators of lying e.g gaze
- Inbau et al: 9 steps of interrogation
- 1. Direct confrontation
- 2. Suspects offered the chance to take the blame away by being offered some justification
- 3. Suspect never allowed to deny guilt
- 4. Ignore reasons for innocence
- 5. Keep eye contact and use first names
- 6. Suspect will become quiet - if they cry infer guilt
- 7. Give suspect two options - both infer guilt
- 8. Get suspect to admit guilt in front of witness
- 9. Document confession and get suspect to sign it
- Gudjohnsson: A case of a false confession
- Case study
- 17 year old accused of to murders
- Interview
- FC's first interview was 14 hours
- FC denied being near the scene but after being repeatedly accused of lying he agreed
- Constant pressure and was denied a solicitor
- FC's first interview was 14 hours
- This is a case of a coerced compliant false confession (he gave into pressure during the interviews in order to escape the situation
- Case study
- Mann - Police officers ability to detect suspects lies
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