Criminal Psychology Topic 4 Flashcards
Name the studies
KEY: Dixon et al
- Penrod & Cutler
- Signall & Ostrove
- Pennington & Hastie
- Simonds & Chabris
Penrod & Cutler
Witness confidence
Procedure
Video mock trial (Robery)
Female witness
Penrod & Cutler
Witness confidence
Findings
- 80% confidence - 60% guilty verdict
- 100% confidence - 67% guilty verdict
Penrod & Cutler
Witness confidence
Conclution
The MORE CONFIDENT witness is MORE jurors PURSUADED
YET
100% condfidence only has 67% guilty verdict = confidence is only 1 factor
Sigall & Ostrove
Attractivness of defendent
Sample
120 college students
60:60 gender split
Sigall & Ostrove
Attractivness of defendent
Conditions
Attractive / not attractive / no information given
Burglary / Fraud
Sigall & Ostrove
Attractivness of defendent
procedure
- Read accounts of crime (strong suggestion of guilt)
- recomend puishment (1-15 years in prison)
Sigall & Ostrove
Attractivness of defendent
Findings
Longest: Attractive/Fraud -> 5.45 years (average)
Shortest: Attractive/Burglary -> 2.8 years (average)
Sigall & Ostrove
Attractivness of defendent
Conclution
Attractive is favoured by jurory UNLESS used attractiveness to defraud people
Penning & Hastie
Story Order
Procedure
Participants were jurors in mock trial
Lawyers gave storied in different orders
Penning & Hastie
Story Order
Findings
Defendent: Witness order / Prosecution: Story Order = 78% guilty verdict
Defendent: Story order / Prosecution: Witness Order = 31% guilty verdict
Penning & Hastie
Story Order
Conclution
Story Order (chronology) = more persuasive than witness order (emotion)
Events are easier to construct if event are in right order
Simonds & Chabris
Visual Innattention
How could barristers use findings to discreading eye-wittness testonomies
Unexpected Event missed 46% of the time
Simonds & Chabris
Visual Innattention
How could barristers use findings to support eye-wittness testonomies
Unexpected Event seen 54% of the time
Dixon Et Al
Accents in perseption of guilt
Sample
119 White Psychology Undergraduates
24 male / 95 female
mean age 25.2 years
Dixon Et Al
Accents in perseption of guilt
Conditions
Race:
- White
- Black
Accent:
- Brummie
- Standard
Type of Crime
- White Collar (Fraud)
- Blue Collar (Robbery)
Dixon Et Al
Accents in perseption of guilt
Condition groups
- Brummie / White / White Collar
- Brummie / White / Blue Collar
- Brummie / Black / White Collar
- Brummie / Black/ Blue Collar
- Standard / White / White Collar
- Standard / White / Blue Collar
- Standard / Black / White Collar
- Standard / Black / Blue Collar
Dixon Et Al
Accents in perseption of guilt
Method
2x2x2 factor design
Labratory Experiment
Repeated Measures
Dixon Et Al
Accents in perseption of guilt
Procedure
- Listened to 2 minuet recorded convosation
- based on real police interview in 1950
- young male suspect pleading inocents
+ police officer describes race of suspect & hight 5’9 - Rated guilt of suspect on 7 point scale
- Speach Evaluation Instrament
- ‘ omnibus’ (wide) measurment of language attitiudes
Dixon Et Al
Accents in perseption of guilt
Findings
- Brummie accent rated as most guilty
* Brummie / Black / Blue Collar had highest rating of guilt* - Supperiorty (colour crime) & attractivness can predict guilt