Loftus and Palmer

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  • Created by: Jenny
  • Created on: 24-05-14 16:28
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  • Loftus & Palmer '74
    • AIM
      • to see if the phrasing of a question effects the estimated speed
    • EXPERIMENT 1
      • Procedure
        • 45 students
        • 7 films involving traffic accidents shown (5-30 seconds long)
        • after every film - questionnaire
          • account & questions
        • groups of 9 asked how fast were the cars going when they .......
          • changed word: smashed, bumped, collided, contacted
      • Results
        • 4/7 staged (knew mph)
    • EXPERIMENT 2
      • Procedure
        • 150 Ps
        • shown a film with multiple car accidents (1 min long - accident = 4 seconds)
          • followed by a questionnaire and questions (see E1 not asked about speed)
        • came back 1 week later
          • asked if they saw "any broken glass" thought the word smashed would lead to yes
      • Results
        • way q asked can effect answer
    • STRENGTHS
      • lab - clear controls - replicable
        • researchers replicated it and found the same results - reliable
      • by using estimates of speed quantitative data was collected - objective
    • WEAKNESSES
      • students -not under same emotional strain - not generalisable
      • possible demand characteristics
      • some may have had experience with driving
  • smashed 40.8
  • collided 39.3
  • yes
  • smashed
  • hit
  • 34
  • 7
  • 43
  • 6
  • 44
  • 29

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