Making A Case
- Created by: Ashly.Shagee
- Created on: 13-04-15 10:18
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- Making A Case
- Interviewing Witnesses
- Loftus: Weapon Focus
- Lab exp.
- 36 University of Washington students.
- Half recruited via ads & paid £3.50 and others participated for extra credits for psychology.
- 18 slides of events in a Taco Time restaurant.
- IV: second person in queue pulls a gun on the cashier for experimental group and cheque for control
- DV: recognition of that person. Measured by 20 item multiple choice questionnaire.
- Shown 12 photos in random sequence & asked to rate how confident they were on their identification on a scale of 1-6.
- 38,9% in control & 11.1% in experimental.
- E.F.D: 3.72 secs on gun and 2.44 on cheque.
- Bruce: External & Internal Features In Facial Recognition
- Exp:1; 30 staff and students from Stirling Uni, paid £2 to sort the composites.
- G2: composites with internal features.
- G1: complete composites.
- G3: external feature.
- 42% external features sorted correctly & 19.5% of internal.
- Independent measure design with 3 conditions.
- Match the correct composite image to the celebrity from the 40 composites given.
- Exp:1; 30 staff and students from Stirling Uni, paid £2 to sort the composites.
- G2: composites with internal features.
- G1: complete composites.
- G3: external feature.
- 42% external features sorted correctly & 19.5% of internal.
- Exp:1; 30 staff and students from Stirling Uni, paid £2 to sort the composites.
- Match the correct composite image to the celebrity from the 40 composites given.
- Exp:2,
- 44 volunteered undergrads at Stirling Uni.
- Identify the celebrity composites from the photo array.
- Easy: very different from the target face. Hard: very similar to target face.
- External identified 42% and internal 24%.
- Exp:1; 30 staff and students from Stirling Uni, paid £2 to sort the composites.
- Fisher & Geiselman: Cognitive Interview
- Interview similarity, focused retrieval, extensive retrieval & witness-compatible questioning.
- Field Experiment.
- 16 detectives from the robbery division of Dade County.
- Asked to record a selection of their next interviews using their standard techniques.
- Took 4 months & 88 interviews were recorded, mostly of bag snatches and robberies.
- Divided into 2 groups. 1 trained in CI techniques
- 7: CI & 9 non. Training done over 4*60 mins sessions.
- Interviews then recorded over 7 months & were analysed by a team at the Uni of California who were blind to the condition. The info from both group was collated.
- CI group elicited 47% more info than before & 63% more info than the untrained group.
- Loftus: Weapon Focus
- Interviewing Witnesses
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