Loftus and Palmer 1974

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1. A weakness of it being in a laboratory setting would be...

  • Demand characteristics
  • High ecological validity
  • Hard to replicate
  • Hard to control the ethics
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2. What was the independent variable?

  • How many pps they used
  • The wording of the question
  • The speed the pp suggested
  • The film they showed

3. Their use of a laboratory setting was a strength because...

  • It meant that they were able to obtain ecological validity
  • They had clear controls such as all pps being asked identical questions. Their controls and documentation of the procedure meant that it was easy to replicate.
  • They could be unethical and justify it for scientific research
  • They were demand characteristics which is what they had initially stated they were looking for within their hypothesis at the start of their study.

4. What experimental design was used?

  • Independent design
  • Repeated mesures
  • Matched pairs
  • Test retest

5. What did they conclude from this second experiment?

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


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