Essay On Eyewitness Testimony

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The reliability of eyewitness testimony has become a popular research topic in applied and social psychology since Loftus and Palmer’s study in 1974 (see Steblay, 1997; Wright & Loftus, 1998; Deffenbacher, Bornstein, Penrod, & McGorty, for reviews). Participants viewed videos or slides of traffic accidents (Loftus & Palmer, 1974) or a criminal act (Roediger, Jacoby, McDermott, 1996; Cutler, Penrod, & Martens, 1987) and afterwards were asked several questions about what they had just seen. The manipulation in studies was that the researchers did not ask the same question to all participant, but instead changed the wording of one critical detail in the question. In Loftus and Palmer’s study, some of the subjects were asked “About how fast were the cars going when they hit each other?”, while other subjects were asked the same question with the verbs smashed, collided, bumped and contacted instead of the verb hit. Loftus and Palmer (1974) showed that changing a single verb induced the different participant groups to give different estimations of the car’s speed, and additionally to produce more false claims of having seen broken glass during later interrogation.
Loftus’s work and the studies that followed have demonstrated that an individual’s memory of an event can easily be distorted by post-event information, which is provided through questions that the researcher or police officer in case of a real life crime might ask the witness. But not only researchers’ questions have been found to distort memory. Several studies have indicated that when witnesses discuss an event together they can mistakenly incorporate elements of each other’s memories into their own memories (e.g., Gabbert, Memon, & Allan, 2003; Paterson & Kemp, 2006). ...

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...g that people in everyday life tend to cue one another’s memory, and that this type of prompting is productive. The assumed benefit of collaborative remembering has also been referred to as cross-cueing (Wegner, 1985; Meudell et al., 1992, 1995). A benefit that, understandably, may be interesting for police investigations in cases for which multiple witnesses are heard.
However, although Meudell and colleagues (1992) demonstrated that two individuals always recalled more than one, they failed to demonstrate that social interaction facilitated performance and produced ‘emergent memories’, which are memories not available to either of the individual recalling on their own. In a second attempt to demonstrate cross-cueing, Meudell and colleagues (1995) manipulated the opportunity for cross-cuing by using a categorized list, but again failed to show emergent memories.

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