Who investigated persuasive characteristics of witnesses in relation to attractiveness
Sigall and Ostrove (1975)
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What was the IV i Sigall and Ostrove's study
120 students decide the severity of sentence in conditions: Attractiveness (attractive/non-attractive/control), type of crime (burglary/fraud)
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Outline the findings of Sigall and Ostrove
When crime was unrelated to attractiveness ppts assigned more lenient punishments to attractive candidate but when crime was related to attractiveness this person would receive a harsher punishment.
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How can jury decision be inlfuenced
Order of presentation: Pennington and Hastie (1988) Using an eyewitness: Loftus (1974)
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Outline the results from Pennington and Hastie
Story order (instead of witness order) was the most persuasive strategy as it enabled jurors to more easily construct a narrative for themselves. This only provides an advantage if one side uses it (prosecution/defence)
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Outline the procedure used by Loftus when investigating the influence of an eyewitness on jury decision making
150 mock jurors with a scenario about a robbery and murder in a local store. There were 3 experimental conditions
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Outline condition 1 used in Loftus study
An eyewitness said he saw a man leaving the store. In this condition 72% of mock jurors found the defendant guilty
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Outline condition 2 in Loftus study
There was no eyewitness evidence and only 18% of mock jurors found the defendant guilty
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Outline condition 3 in Loftus' study
There was an eyewitness but his evidence was discredited because it was established that he was short-sighted, not wearing his spectacles at the time of the offence and so could not have seen the robber's face. 68% of jurors found defendant guilty
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Front
What was the IV i Sigall and Ostrove's study
Back
120 students decide the severity of sentence in conditions: Attractiveness (attractive/non-attractive/control), type of crime (burglary/fraud)
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