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Slide 1

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Yuille and Cutshall (1986)
To see if leading questions would
effect witnesses recall, when using a
real case study, not a lab experiment.…read more

Slide 2

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· To examine issues raised by lab experiments
in eye witness testimony, and to see if leading
questions have the same effect in a field
experiment.…read more

Slide 3

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· 21 witnesses were interviewed by police after a gun shooting in Vancouver.
· 13 people agreed to take part in the research. The witnesses gave their
accounts to the police, and then police asked questions, all the interviews
were recorded by hand.
· 4-5 month after witnesses were asked to recall the event again to
researchers. These interviews were recorded again.
· They were then asked leading questions; did you see `a' or `the' broken
headlight?, or did you see `a' or `the' yellow panel? Neither of these things
existed in the event.
· The degree of stress the participants suffered was recorded on a likert scale
of 1-10. There were other questions asked about their emotional state too.…read more

Slide 4

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· The leading questions had little effect on the
witnesses. 10/13 said they had not noticed the
headlight or yellow panel.
· The researchers gained more details than the police
did. Recall was better 4-5 months later.
· Participants saw different things. Central witnesses
recall was better (84.56%) than the peripheral
witnesses (79.1%), but both had high percentages of
recall.…read more

Slide 5

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· When using real case studies and field
studies, eye witness testimony tends to be
much more accurate than in lab experiments.…read more




Some of the procedure is inaccurate btw

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