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11-21-05 - Eyewitness Psychology

11-21-05 - Eyewitness Psychology - events b Memory often...

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Eyewitness Psychology 11/21/05 1. Fragility of Memory a. Memories of Challenger: While memories were confident, they were not correct. 2. Phases of Memory a. Acquisition: Getting the information inside the head b. Retention: Storing in the interim c. Retrieval: Reporting on the memory at a later time 3. Weapon Focus a. If a dangerous object is in a crime scene, attention will be drawn to it – increasing memory for it and nearby things, reducing memory for details further away b. If people remember seeing a non-threatening object, they are more likely to remember what an attacker’s face looks like than if there is a weapon 4. Ebbinghaus Curve a. Decay of memory curve – rapid immediate loss, then slowly 5. Schema Effects a. Schemata are knowledge structures containing usual characteristics or events associated with people, places, things, or
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Unformatted text preview: events b. Memory often contains false details suggested by a person’s schema 6. Guiding Psychological Principles a. Not a DVD model – exact memory, though there might be some decay b. Re/constructive process i. Based somewhat on traces of what was encountered ii. But also filled in by pieces of information coming from expectations and outside sources 7. Lineup Bias a. When given only one (or two) lineup choices are plausible, given the witness’s prior description. A subtle form of suggestibility. b. Six-pack vs. sequential bias – Sequential leads to fewer incorrect ID’s....
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