Evaluations Issues

Ethics
1. + all participants consented to taking part
  1. and debriefed at the end
2. - people could be cause psychological harm as they may have been envloved in a car accident - Protection of the Patient
EV
1. - high level of control
  1. done in a lab - creates an artificial environment, this means it is difficult to apply the results to an everyday situation
    1. low EV
2. used real cars/ real crashes (some staged)/ real life situation - they actually witnessed them
  1. make a statement (Police would ask for this) - 2nd study - like reality - gap in between statements
3. - no emotional value
  1. different if it were to happen in real life
    1. expecting something to happen - not realistic - real life happen by suprise
Data
1. QUANTITATIVE
  1. useful for comparison
  2. does not give any information into WHY people gave the answers they did
  3. Speed
    1. Broken glass
      1. CQ
2. QUALITATIVE
  1. the statements
Reliability
1. YES it is reliable
  1. they will be able to replicate it as it is highly controlled so can be easily replicated by others
    1. use the same questions/ video clips/ overall good ethics/ repliciability
Validity
1. YES, 2nd study - control group - shows verb was changing peoples memory
2. Lab Experiment - highly controlled
  1. little chance of extraneous variables effecting the results - cause and effect inferred
3. high chance of DC - they are voluntary Psychology students
Sample
1. students may be less experienced drivers than the general population - maybe less confident in their ability to estimate speed - may have led them to be more influenced by the words in the question
  1. may also become more susceptible to DC - especially if they are students of the researchers conducting the study
    1. know what Loftus specialises in - DC - memory
2. students are used to looking at screens and taking information in
  1. unrepresentative
    1. age bias (students - younger)
    2. location bias (small area)
    3. personality bias ( certain type of person to take psychology)
Usefulness
1. the recommendation was rejected by the Judiciary and the Home Office, but Juries are now warned by the dangers of honest mistakes by eyewitnesses
  1. helped those who had been wrongly accused
    1. now illegal to use leading questions - you cannot be found guilty when there is only an EWT against you. Back up eye witnesses
      1. reconstructive nature of memory
SNAPSHOT study

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Evaluations Issues

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	Created by charlotteebrock almost 11 years ago