Loftus and Palmer

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  • Created by: emma
  • Created on: 11-03-14 20:00
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  • Loftus and Palmer
    • Aim
      • how information supplied after an event influences a witnesses memory for that event
      • If phrasing of question about an event effects a persons memory of that event
    • Participants/ Method
      • 1- 45 Washington Uni students split into 5 groups of 9
      • 2- 150 Washington Uni students split into 3 groups of 50
      • Laboratory experiments
      • Independent measures design
    • Procedure 1
      • Shown 7 clips about car accidents from seattle police department and ever green safety council
        • 5-30secs
      • Asked to write an account of what they had just seen
      • Asked critical question
        • About how fast were the cars going when they
          • smashed, collided, bumped, hit contacted each other
    • Results 1
      • Smashed 40.8
      • Collide 39.3
      • Bumped 38.1
      • Hit 34.0
      • Contacted 31.8
    • Procedure 2
      • 60 second clip of a multiple car pile up
      • Asked critical question about how fast were the cars going when they
        • Smashed, hit each other
          • control group not asked a question
      • One week later asked did you see  any broken glass (no broken glass)
      • wanted to see if the question would effect ppts memory for non existing events
      • Test retest reliability
    • Results 2
      • Smashed 10.48mph 32% yes 68%no
      • Hit 8mph 14% yes 86%no
      • control 12% yes 88%no
    • Conclusion
      • Memory is made of what we perceive as happening at time and info we later receive
      • Verbal labels result in cognitive amendment
      • info gathered at time of event is modified by data gathered afterwards
        • Reconstructive memory hypothesis
      • we use schemas

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