Term
| What were the aims of Pennington and Hastie's study? |
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Definition
To investigate whether or not story evidence summaries are true causes of final verdict decisions
The extent to which story order affects confidence in those decisions |
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Term
| What was the procedure of Pennington and Hastie's study? |
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Definition
Participants allocated to 1 of 4 groups and listened to a tape reording of the stimulus trial and then responded to written questions
Had to reach a verdict and rate how confident they were with that decision |
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Term
| What were the results in Pennington and Hastie's study? |
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Definition
Prosectution in story order/defence in witness order - 78 guilty verdicts
Prosecution in WO/defence in SO - 31 guilty verdicts
Prosecution in SO/defence in SO - 59
Prosecution in WO/ defence WO - 63 |
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Term
| What was the aim of Cutler et al's study? |
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Definition
| To investigate the effect of an expert witness on jury perception of eye-witness testimony |
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Term
| What was the procedure of Cutler et al's study? |
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Definition
Participants viewed a videotaped robbery trial in groups of 2-8
Independently completed a questionnaire containing the dependent measures: the verdict, a memory test and rating scales for how confident they were in their decisions |
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Term
| What were the four independent variables in Cutler et al's study? |
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Definition
Witness identifying conditions
Witness confidence
Form of testimony
Expert opinion |
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Term
| What were the results of Cutler et al's study? |
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Definition
More guilty verdicts when WIC was good and expert witness had given descriptive testimony
85% recalled testimony correctly
Jurors more confident in their decision if good WIC, heard expert witness and eyewitness was 100% confident |
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Term
| What was the aim of Pickel's study? |
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Definition
| To investigate the effect of instructions to disregard inadmissable evidence |
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Term
| What was the methodology of Pickel's study? |
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Definition
Mock trial: critical evidence introced by accident by the witness then either allowed or overrulled by the judge
When jurors were asked to ignore the inadmissable evidence, it was sometimes supported by a legal explanation, or none was given |
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Term
| What was the procedure of Pickel's study? |
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Definition
| Participants listened to an audiotpe of the trial and then completed a questionnaire asking them to make decisions about the case: verdict, esitmate probable guilt of the defendant, rating scale of the extent to which the inadmissable evidence caused them to believe the defendant was guilty, rating on the credibility of the witnesses |
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