Outline and Evaluate Research on the Effect of Misleading Questions on an Eyewitness Testimony

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Outline and Evaluate Research on the Effect of Misleading Questions on Eye Witness Testimony. There have been many studies that have tested the effect of misleading questions on the accuracy of eye witness testimony (EWT). One of the main studies was carried out by Loftus and Palmer in 1974 and the other was conducted by Loftus et al in 1978. Loftus and Palmer conducted a study to determine whether or not misleading information distorted the accuracy of an eyewitness' immediate recall. They did this using 45 students. The students were shown seven clips of different traffic accidents and after each clip, they were given a questionnaire that asked them to describe the accident and then it asked them a series of question. One of these question was a critical question which asked them, "How fast were the cars going when they hit each other?". To determine the effect of misleading questions, one group was asked the above question and the other groups were asked the same question but with slightly different wording. Instead of using the word hit, Loftus and palmer replaced it with bumped, smashed, contacted and collided. They found that the group that was given the word "smashed" estimated a higher speed than all of the other groups suggesting that misleading information does effect the accuracy of an EWT. In 1978, Loftus et al conducted another study to test the same hypothesis. Participants in this study were presented with slides that showed the events that led up to another traffic accident. However, the picture that was shown to one group was slightly different to the original picture that the other half of people were shown. The symbol/text on the sign was either STOP or YIELD. After seeing the picture, all participants were given a set of questions about the picture, one of them being, "Did the other car pass the red Datsun while it was at the YIELD sign?".

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