Accuracy of eyewitness testimony:misleading information Flashcards
what are leading questions?
a question which because of the way it is phrased suggests a certain answer
what was loftus and palmers first experiment?
- 45 students were shown 7 films of different traffic accidents
- then given questions about the accident
what was the critical question given to pps in experiment 1?
critical question (leading question) = pps were asked to describe how fast the cars were travelling *each group = was given a different verbs included in their questions
what different verbs were used in the questions?
- smashed
- contacted
- collided
- bumped
- hit
what was the mean estimated speed calculated for each pps group for SMASHED?
40.8
what was the mean estimated speed calculated for each pps group for CONTACTED?
31.8
What was loftus and palmers experiment 2?
- new set of pps= divided into 3 groups and shown a film of a car accident lasting 1 minute.
- pps were asked to return one week later = when they were asked a series of questions
- another critical questions = Did you see any broken glass (there was none)
what was the findings of experiment 2?
leading questions = did change the actual memory of a participant had for the event
what is response bias explanation?
suggests that the wording of the question has no real effect on the participants memories
*just influences how the decide to answer
what is substitution explanation?
when the wording of a leading questions actually changes the pps memory of the film clip
What is post event discussion?
A Conversation between co-witnesses and an eyewitness after a crime has taken place which may influence the accuracy of each witness’s recall of the
event
-contaminated
what did Fiona Gabbert study?
- studied participants in pairs.
- each pp = watched the same crime but filmed from different points of views
- both pps discussed= what they had seen before individually completing a test
what were the findings of Fiona Gabbert’s study?
- 71% of pps mistakenly recalled aspects of the event they had not seen but had picked up in discussion.
- control group-0% was mistakenly recalled
what did Gabbert conclude?
Witnesses often go along with each other= to win each each others social approval or because they believe the other witnesses are right.