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Eyewitness Evidence Analysis

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“Eyewitness evidence is one of the earliest and widely studied topics in forensic psychology” (Pozzulo, Bennell, & Forth, 2015, p. 123). Eyewitness testimony is very diverse and is becoming increasingly influential during court proceedings, which leads to many wrongful convictions. A specific topic that will be investigated during this paper will be the use of independent variables aiding eyewitness testimonies. In 1978, Wells divided those independent eyewitness cues into estimator and system variables (Leach, Cutler, & Van Wallendael, 2009, p.160). Estimator variables occur at the crime scene while the eyewitness is encoding the event into their memory; these are not controlled by the criminal justice system (Leach, Cutler, & Van Wallendael, …show more content…
In 1985, the first study was done to evaluate the effects of the police interview, cognitive interview and hypnosis on a witness’ testimony (Geiselman, Fisher, MacKinnon, & Holland, 1985). The scholars discovered that the cognitive interview was the best technique at recovering accurate information (Geiselman, Fisher, MacKinnon, & Holland, 1985). However, like the other interviewing techniques it does not decrease inaccurate information from the witness. (Geiselman, Fisher, MacKinnon, & Holland, 1985). Another system variable involving the police would be the post identification feedback on the witness; it amplifies their confidence – which is not highly correlated to accuracy, and can lead to serious consequences (Bradfield, Wells & Olson, 2002). This helped give the criminal justice system the ability to assess their protocols to get rid of some system variables that effects eyewitness testimony …show more content…
This can be because of something the witness was told outside the criminal justice system or inside; for Thompson’s case this was a system variable problem. As revealed above, the eyewitness was tampered with when she received the confirmation feedback. This was incorporated into her memory and created the image of Ron Cotton as her rapist and for her, it was accurate and she was confident about it. This was the wrong information because the real culprit was Bobby Poole, yet she refused to consider him because the misinformation was incorporated in her memory. A hypothsis for this phenomenon that is supported by Loftus is called, the memory impairment hypothesis. Where the original memory is replaced with the inaccurate memory, creating a new inaccurate, single memory with post-event information (Pozzulo, Bennell, & Forth,

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