Yuille and Cutshall

HideShow resource information
what was their aim
to test the results of lab experiments previously that said EWT are unreliable. to see the effect of leading questions on EWT.
1 of 12
how many participants did they use
13 of the 21 original witnesses agreed to take part: 3 females, 10 males
2 of 12
what was the crime
someone tried to steal from a shop and tied up the owner. the owner escaped and then the criminal pulled a gun on him. the owner shot the criminal and killed him in self defense
3 of 12
describe the procedure (not the leading Qs yet)
4-5 months after police interview, researchers interviewed the participants using the same structure (gave account of event then asked Qs). two leading questions. careful scoring procedure turned qualitative into quantitative. rated stress at crime.
4 of 12
what were the two leading questions
'did you see a/the yellow quarterpanel' and 'did you see a/the broken headlight'.
5 of 12
what were the results
10/13 participants said no to the leading questions. yuille and cutshall found more details than the police.
6 of 12
what was the conclusion
leading questions do not effect accuracy of EWT which questions the validity of lab experiment data in the past
7 of 12
generalisability
small sample size. unique incident/serious crime in a small town in canada.
8 of 12
reliability
unique event: not repeatable. control over the scoring procedure although when asked what age the criminal was someone said 'in his mid 20s' it was marked incorrect even though he looked it.
9 of 12
applicability
helping police understand reliability of EWT when using them to convict criminals
10 of 12
validity
real life emotions and attention levels. high task and eco validity: real task that happened in natural environment. interview was similar to police interview so not unusual.
11 of 12
ethics
psychological harm of reliving the traumatic event. right to withdraw as 8 people did.
12 of 12

Other cards in this set

Card 2

Front

how many participants did they use

Back

13 of the 21 original witnesses agreed to take part: 3 females, 10 males

Card 3

Front

what was the crime

Back

Preview of the front of card 3

Card 4

Front

describe the procedure (not the leading Qs yet)

Back

Preview of the front of card 4

Card 5

Front

what were the two leading questions

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Criminological and Forensic Psychology resources »