EWT
- Created by: Ems9
- Created on: 20-02-18 10:20
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- EWT
- Loftus + Palmer 1974
- experiment 1
- Aim- investigate the impact of misleading info on the accuracy of EWT
- procedure- 45 students(opportunity), shown 7 videos, asked to describe event with one specific question. one work different for each of five conditions.
- findings- smashed,40.8 contacted, 31.8
- conclusion- different verb conveyed car was going faster to influence their response
- experiment 1
- anxiety
- Loftus-1979
- aim- study the affects of anxiety on accuracy of EWT.
- procedure- lab,participants in waiting room, overheard talk about equipment failure, man left with pen. asked to identify the man.
- overheard heated discussion , heard smashing glass, man left with knife covered in blood.
- findings- 49% identified the man with the pen and 33% identified the man with the knife.
- conclusion- higher levels of anxiety in the knife condition. weapon focus effect,
- Loftus-1979
- Cognitive interview
- 4 parts- recall everything, recall from a different perspective, recall in a different order and recall context + emotion
- reduced witness' use of prior knowledge , expectation or schema
- Geiselman et al (1985)
- aim- to investigate the effectiveness of the cognitive interview
- procedure- participants watched a film of violent crime after 48 hours interviewed using one of three methods.
- three method of interview- standard interview used by LA police, cognitive interview and interview using hypnosis
- findings- average number of correctly recalled events for CI = 41.2, hypnosis =38 and standard interview = 29.4. no significant difference in number of errors in recall
- conclusion- CI leads to better memory for events, with witness' able to recall more relevant info.
- 4 parts- recall everything, recall from a different perspective, recall in a different order and recall context + emotion
- Loftus + Palmer 1974
- Mis-leading info
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