Making A Case- Interviewing Suspects Flashcards
Method of Vrijj and Mann
Study 1- coding study
Study 2- lab experiment
Participants of Vrijj and Mann
Study 1- interviewee was a convicted criminal- volunteer
Study 2- 59 males and 6 females all police officers from west Sussex
Procedure of study 1 of Vrijj and Mann
- Suspect videoed during many hours of interview.
- Police had good reasons to suspect him.
- 2 experienced police officers interviewed him with lawyers present.
- initially denied involvement but interview showed his guilt.
- videos analysed looking at behaviours.
Procedure is study 2 of Vrijj and Mann
Selected video fragments shown to 65 police officers, asked:
- is he lying (yes or no)
- is he tense (scale 1-7)
- is he controlling his behaviour (scale 1-7)
- is he having to think hard (scale 1-7)
Study 1 results of Vrijj and Mann
Long pauses
Spoke slowly
More speech disturbances than normal
Study 2 results of Vrijj and Mann
Overall accuracy rate = 64%
Participants better at truths (70%) than lies (57%)
Aim of Goudjonsson and Mackeith
To document a case of false confession of a youth who was at the time distressed and susceptible to interrogative pressure
Method of Goudjonsson and Mackeith
Case study
Participant of Goudjonsson and Mackeith
17 year old accused of 2 murders, of average intelligence, no mental illness personality not obviously abnormal
Background of Goudjonsson and Mackeith
2 elderly women battered to death in their home, their savings missing and evidence of sexual assault.
Youth had no access to solicitor, and there was no forensic evidence against him, interviewed at length and confessed by writing a statement
Police interviews of Goudjonsson and Mackeith
14 hours lasted the first interview, there were 3 more interviews. 5 officers questioned him, he denied but after repeatedly being accused and said to be sexually impotent he agreed
Psychiatric examinations of Goudjonsson and Mackeith
No evidence of mental illness found.
He scored 10 on Gudjonsson suggestibility scale making him abnormal.
Conclusions of Goudjonsson and Mackeith
He gave in during the interview to escape - coerced complaint false confession
Shows it can happen to anyone
Aim of Goudjonsson and Pearse
To test the hypothesis that psychologically vulnerable people are particularly likely to confess as well as younger people, those without previous criminal offence and without legal advice.
Method of Goudjonsson and Pearse
Quasi experiment