Yuille And Cutshall Field Study Into The Effects Of Ewt Flashcards
How many of the original 21 participants were used and how many people were central and how many people were peripheral witnesses?
13 out of 21 were original participants
7 were central witnesses
6 were peripheral witnesses
What is the aim of yuille and cutshalls study?
Keywords Accuracy/reliability Real life witnesses Leading questions Time
To investigate the accuracy of real life witness accounts in response to leading questions over a period of time
What makes yuille and cutshall a field study? This is a procedure point Ena
The testimony and gunshop robbery was real and not staged
How many months later were the pps interviewed and how exactly did they carry it out?
Yuille and cutshall
Pps were interviewed 3 months later by researchers following the same procedures,describing the event and answering further questions
Why was the pps interviewed 3 months later in yuille and cutshalls field study?
It was used to see if the level of ewt accounts after a period of time would change
The researcher involved 2 misleading questions using the definite the and indefinite a, what questions were used to test pps?
Did you see a/the busted headlight
A/the yellow panel
Why was these questions used in yuille and cutshall misleading
There was no broken headlight and the panel was blue
How many of the central witnesses in yuille and cutshalls study correct in accuracy?
Keywords
Findings
85%
How many of the peripheral witnesses in yuille and cutshall were correct in accuracy of eye witness
79%
How many of the pps stated that there was no broken headlight or yellow panel in yuille and cutshalls field study?
10/13 showing leading questions had no affect
How comes witness accounts varied according to centeral and peripheral witnesses in y&c field study?
They had send different amounts of the incident
What did y&c say about stress?
Stress did not affect memory negatively
What are the 3 main conclusions of yuille and cutshalls field study?
Keywords Correct Accurate 3months Misleading information
Eyewitnesses are correct I’m their accounts,unlike many lab based study
Most of the witnesses were accurate and remained so even after 3 months
Misleading information may not affect real life memories to the same extent
Why is y&c field study high in ecological validity than lab in ewt?
Because it looked at real life criminal incident using real life witnesses as pps which lab experiments do not
It showed real life witnesses are not mislead by leading questions such as the lab based study of loftus and Palmer
In turn this provides a greater generalisability to real life situations so therefore holds important information for courts that ewt can be relied on in real life situation
Why is yuille and cutshalls study low in population validity?
Keywords
One specific event
Unique
13 pps
One specific and unique incident involving the use of 13 pps, it is difficult to use these as an example of all other criminal incidents and generalise the results to a wider population
Why does yuille and cutshalls field study have low reliability?
The study could not control for extraneous variables for example pps had the opportunity to read up on facts on media or talk to other pps during the 3 months making their accounts more reliable
Only 13 pps were used, in terms of reliability what does this mean?
Y&c
It limits reliability as pps bias may result, so the researcher may not get the true reactions from his subjects, it was also a one of event meaning it cannot be replicated else where
Qualitative accounts were scored into quantitative day in yuille and cutshall does this make it reliable?
No because subjective interpretation were used
Why could you say that yuille Nd cutshalls study was high in reliability?
Researchers were replicating police interviews to a great extent and they found similar detail of the event
In terms of ethics what are the strength of yuille and cutshalls field study?
It was naturally occurring so pps were not forced to take part
Pps were given the right to withdraw and one person did
Pps consent was gained as they knew part of the procedure e.g. Reliving the event
What are the weaknesses in terms of ethics in yuille and cutshalls field study?
Pps were not fully informed about the misleading question so were decieved about the critical question
Reliving an event could pose as being ethically dubious than asking pps to report on a health and safety video as in loftus and Palmer
What is the pratical application/contribution that came out of the yuille and cutshall field study?
The findings show that the cjs can be more confident in ewt even after some time has passed as this was a study conducted on real witnesses to an unstated crime
Study showed that time had no effect on recall so witnesses do not need to recall immediately to police
stress does not negatively affect memory as witness accounts were relatively accurate
Why are the conclusions of yuille and cutshalls field study an oversimplification?
Although eye witness recall appears to be accurate this may be because of flash bulb memory
(A major or personal event that has an emotional effect)
Other eye witness events may not leave such vivid and lasting impression such as shoplifting
