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8 Cards in this Set
- Front
- Back
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Pennington and hastie (order of witness testimony) |
Studies primacy and recency effect. Manipulated the order of witness and testimony in a rape case. Found greatest number of guilty verdicts when strongest guilty witnesses and testimony came first. Another study proves story order more effective. |
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Cutler et al (use of expert witnesses) aim |
To investigate whether hearing about psychological reasearch from an expert witness which casts doubt on the accuracy of eye witness testimony would affect jurors decision making by making them more sceptical. |
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Cutler et al Procedure |
538 undergraduates. Video of a mock trial of a robbery. Individually completed a questionnaire on verdict, a memory test, rating scales and verdict confidence. |
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Four IV's in Cutler et al |
1. Witness Identifying conditions (WIC) Either good (no disguise, hidden gun, two day delay) or bad ( disguise, handgun, 14 day delay) 2. Witness confidence- witnesses said they were either 100% or 80% confident about their identification. 3. Form of testimony- expert witness either gave a descriptive testimony about EWT or relied on figures. 4. Expert expressed an opinion on a scale of 0-25 on the accuracy of testimony. |
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Results of Cutler |
1. Jurors verdict- when WIC is good, more guilty verdicts were given. Incresed of expert witness testimony was detailed. 2. Juror memory- 85% recalled testimony correctly so memory can't be blamed. 3. Juror Confidence- good in the good WIC condition. Increased if expert witness showed confidence. Shows expert testimony improved jurors knowledge and pay more attention to WIC. Helps prevent miscarriages of justice. |
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Pickel inadmissible evidence aims? |
1. Look at the role of the judges instructions when they were followed by a legal explanation. 2. To examine how much the credibility of the witness affect the jurors ability to ignore inadmissable evidence. |
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Pickel procedure |
236 Bali state students. Both groups listended to an audio tape of a mock trial. Evidence that was inadmissible introduced by a witness, judge ruled it was inadmissible and should be ignored. One condition had a legal explanation the other didn't . Alex to decide on verdict, probable guilt and witness credibility. |
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Pickel Results |
No explanation more likely to ignore and find guilty. Credibility of witness had no significant effect. |
