Eyewitnesses - Psychology and Law Eyewitness Testimony How...

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Psychology and Law Eyewitness Testimony
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How do people make identifications? Photo spread/ group, book, one at a time Line-up
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Common misperceptions Over-estimate height of criminals Over-estimate brief event duration Under-estimate long event duration Weapon focus
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Memory Errors Encoding (Yerkes-Dodson) Storage Retrieval (Buckout-unconscious transference)
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How do we study eyewitness id? Stage crimes
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How persuasive are eyewitnesses to a jury? Loftus – robbery and murder cases No eyewitness 18% conviction Regular eyewitness 72% conviction Discredited eyewitness 68% conviction
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Wells’ experiment Thefts staged in good, moderate, and poor viewing conditions Accuracy was 74%, 50%, and 33% Respondents watched cross- examination and believed people 69%, 57%, and 58% of time Over-confident in moderate and poor conditions
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Other problems Jurors insensitive to bias introduced by police interrogation Jurors unaware of weapon focus and
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Eyewitnesses - Psychology and Law Eyewitness Testimony How...

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