Mind map

Penrod & Cutler (1995)

Whitley Richards Psychology A level English

Map content

Aim
- Whether expert witnesses casts doubt on the accuracy of eye witness testimonies
Procedure
- Participants
  - 538 undergraduates
  - Given extra credit
- Method
  - Lab experiment
    - Viewed a videotaped robbery trial
  - Mock trials
  - Self report
    - Questionnaire
      - DV's were...
        Verdict
        With rating scale about confidence of verdict
        Memory test
- Iv's were...
  - Witness Identifying Conditions (WICs)
    - Good WICs...
      - No suggestive instructions
      - 2 day delay
      - Hidden gun
    - Bad WICs
      - Robber disguised
      - Brandishing a handgun
      - Delay of 14 in identification of robber in line up
      - Suggestive instructions
  - Witness confidence
    - Confidence that robber was correctly identified
      - Either...
        100%
        80%
  - Form of testimony
    - Expert witness uses...
      - Qual description
      - Quant description
        Percentages
  - Expert opinion
    - In 1/2 of the trials
      - Expert witness
        expressed opinion on 25 point scale
        0-25
        0 = least likely to be correct
        25= most likely to be correct
Results
- Good WICs...
  - Guiltier verdicts given
    - Increased with qual description
Conclusions
Evaluation

Description: A level Psychology (Reaching A Verdict) Mind Map on Penrod & Cutler (1995), created by Whitley Richards on 04/04/2016.
Created by: Whitley Richards
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