Loftus and Palmer 1974

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1. Why might the students chosen to partcipate in the study be weakness

  • They may not have fully grasped the concept of this experiment and so may have wanted to sabotage it
  • They may not have been drivers themselves and so their estimate may not have been informed and so are likely to to be representative of many others within this circumstance
  • They can't read or write properly and so the answers given arent likey to have been legible forcing the researchers to make up the results
  • They're young and so are naive and may not know what to say
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2. How long did the pps go away for before returning to answer more questions?

  • 1 month
  • 2 weeks
  • 1 week
  • 8 days

3. What was concluded from the experiment?

  • The form of a question can affect a witness's answer
  • That staged and non-staged collisions result in dramatically different speed estimates
  • That interviews aren't necessarily an effective way of gathering data
  • That interference tasks are effective in demonstrating the capacity of the short term memory

4. Why was the gathering of quantative data from the estimates of speed a strength?

  • They didn't have to look at it through a magnifying glass to read the pp's messy handwriting
  • It meant that they didn't have to interpret all of the data in a subjective way meaning their study had increased objectivity
  • It meant that they could enter it straight onto the computer with ease rather than having to type each statement made within the questionnaires
  • They were able to gather reliable subjective data that would be able to be analysed in a biased way

5. What did they conclude from this second experiment?

  • That broken glass was not a good device in terms of leading on the pps.
  • That the pps had bad memories
  • That even after a week the phrasing of a question can still affect the answer given, through recostructive memory and poor questionning techique
  • That even a week later when the pps could have thought about their response, they sitll answered incorrectly

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