Improving the accuracy of EWT - Cognitive Interview Flashcards
What are the three AO3 PEELS to evaluate the cognitive interview as a way of improving the accuracy of EWT?
RTS by Kohnken - compared standard interview to cog interview
Discussion - weakness - false positives
Weakness - not all techniques are equally as effective
P
(Kohnken)
RTS effectiveness of cog int in imp acc of EWT - kohnken
E
he used a meta analysis of 50 studies comparing cog int and standard int
E
he reported that cog int had a higher percentage in correct info compared to a standard int
L
therefore, this supports bc proves cog int recalls more acc info than a standard int
P
(Discussion - false pos)
However, Kohnkens also suggests that although more info is remembered compared to SI, more incorrect info is also recalled
E
- it was found that over 60% increase of incorrect info was reported in a cog int compared to SI
- this is called false positives
E
this is a weakness bc although using the CI collects more info, it may lead to incorrect info so false imprisonments and wasting police time
L
- therefore this reduces the effectiveness of the CI in improving the acc of EWT
Discussion - economy
- also has neg effects on economy as if EWT are not accurate and police time is wasted from more int/false imprisonments, taxpayers money needed could be spent somewhere more beneficial in society, reducing the credibility CI may have in society to imp acc of EWT
P
(weakness - not all techniques are equally effective)
A further weakness - not all techniques are equally as effective
E
Research has found each of the 4 techniques used alone produced more info than the standard int
E
but it was also found that using a combo of report everything and contect reinstatement produced better recall than any of the other techniques
L
- this is a weakness bc it may mean CI not used effectively as only certain aspects produce acc recall so time and money is wasted, resulting in neg effects in economy
- therefore limiting the effectiveness of the CI
