Eye Witness testimony

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What does the accuracy of EWT depend on?
factors exsisting before an event such as attribution bias
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particularly the what?
fundamental attribution error
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What do EWs tend to use?
pre-exsisting internal attricbution rather than external or situational attribution
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For example?
a witness might assume that a person setting the alarm off when leaving a shop had stolen something
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rather than?
the security tag having been left on- due to an exsisting FAE
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What does this mean?
the accuracy of EWT is already negitively affected by attricbution bias
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Where does support of the idea that the accuracy of EWT is negatively affected by the FAE?
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What did he find?
people tended to believe that car accidents were caused by bad driving
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Which is?
An internal attribute
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rather than what?
external or situational facotrs such as whether the road was icy
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What does this suggest?
FAE is a facotr which negatively affects the accuracy of EWT - which exsists prior to an event
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What has been found out about FAEs?
They occur more commonly in western societies rather than non-western societies
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AS suggested by whom?
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the FAE is weakened, as a factor affecting the accuracy of EWT, as it is culturally biased
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What is the accuracy of EWT depend on?
factors occuring durin the event itself, such as context memory.
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What happens when people form memories?
they tend to recall things most accurately when they are able to put themselves back into the original context in which the memory was formed.
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What do the police use?
Cognitive interview
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What is the first step?
reinstating the metal context of the original memory
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What is the second memory?
free recalling as much detail as possible(often with eyes shut)
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Wha is the third step?
recalling things in different orders, eg, in reverse.
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What is the 4th step?
changing the viewpoint(describing another person's viewpoint of the event.
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What does this suggests?
EWT is most accurate when this CI technique is used, and it was used to good effect in the case of kidnapping of estate agent Stephanie Slater.
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What is the support for the idea that the accuray of EWT is improved by context memory?
It comes from SMith
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What did he say?
In an independent design experiment he asked all pps to learn 80 words in an distinctive room
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What were pps then asked to do?
recall the words in a very different type of room recalled fewer words than pps who recalled the words in the original room (control)
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However what were pps in a third group asked to do?
recall in the different room after describing the original room
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What was found?
recalled the same number of words as the control group
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What does this suggest?
accuracy of EWT is increased by recalling information in the same context as the event itself
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What is the accuracy of EWT depend on?
factor arising after an event such as reconstructive memory
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What isnt memory like?
a video recorder
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What is it?
selective and reconstructive
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What was there research into?
leading questions
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What do they show?
EQT can be influenced after an event
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for example?
Loftus and Palmer showed that how a question is worded post event (how fast were te cars going when they smahsed/hit?)
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can have what?
effect on recall much later
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What were the group asked?
did you see any broken glass?
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What was founf?
the smashed group were twice more likely to see broken glass, though there wasnt any than the hit group
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This is because we hold schemas of concepts which help us make sense of the world
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What can these schemas do?
reconstruct memories of an earlier event, thus negatively affecting the accuracy of EWT
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Where does support come from?
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What did he show?
pps recall of drawing is reconstructed and altered after the initial viewing, depending on the label or schema originally attached to that drawing
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diamond or curtains
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What does Bartlett suggest?
War of the ghosts research supports the idea of reconstructive memory negatively affecting the accuracy of recall
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What does this suggest?
schemas could affect the accuracy of EWT of a crime scene
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In terms of methology what is this research into factors affecting the accuracy of EWT after the event?
is strong
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It is high on reliabilty
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This is because?
studies were done under controlled lab conditions where the effect f an iv, such as a leading question on a DV such as EWT
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Can be what?
Quantitatively measured and compared
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What is one weakenss of this research?
low on external validity
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as much of the research has been done under lab artifical conditions
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what might not the findings be?
might not apply in the real world
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For example?
yuille and Cutshall interviewed 13 people who had witnessed a real armed robery in Canada
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What did they find?
long after the event they were not influence by post event information and leading questions
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What does this contradict?
Loftus' findings
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What does this suggest?
EQT relates to real events it is much more accurate and less likely to be reconstructed
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What is another weakness of EWT research?
it could be seen as reductionist as there are many other factors before during and after an event, which also affects the accuracy of EWT
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For example?
weapon's focus
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What does this involve?
witnesses recalling information about a gun or a knife, rather than details such as the face of the criminal
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What idd Johnson find?
witnesses were less accurate wehn asked to identify a man carrying a bloody knife
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compared to what?
witness asked to identify a man carrying a greasy pen
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What does this suggest?
there are dangers in oversimplifying the factors involved in the accuracy of EWT
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particularly the what?


fundamental attribution error

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What do EWs tend to use?


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For example?


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rather than?


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