Yarmey

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Yarmey _______
(2004)
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What type of study
Field Study
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What is the 1st aim of Yarmey (2004)
To study the reliability of EWT in a task of EW recall and ID from a photo line up
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What is the 2nd aim of Yarmey (2004)
To use a methodology of a field experiment to test EWT
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How many participants were there?
590
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What type of sampling was used?
Opportunity
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The female target would ask them for?
Directions or help finding a lost piece of jewellery
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How much time elapsed before they were approached?
2 minutes
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How many questions in the recall test?
16
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Then given a photo line up of how many photos?
6
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True or false - all were told the target may or may not be in the line up?
True
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What is the 1st variation to the procedure?
Some were prepared for the recall test
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What is the 2nd variation to the procedure?
Some were approached 4 hours later
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What is the 3rd variation to the procedure?
The target wore a disguise - sunglasses & a baseball cap
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Results - what %age identified her when she was present in the line up?
49%
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What %age identified that she was not there?
62%
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True or false- those in the prepared beforehand condition had better recall
True
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1 strength of Yarmey (2004)?
High in ecological validity as it was conducted in the field
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Another strength of Yarmey (2004)?
The task is valid - it is not unusual to be asked for directions
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Another strength of Yarmey (2004)?
Very large, mixed sample - results are generalisable
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1 weakness of Yarmey (2004)?
Lack of generalisability to other situations. No evidence for criminal situations
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Another weakness of Yarmey (2004)?
The recall part may not be valid as it was photos not an actual line up
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Other cards in this set

Card 2

Front

What type of study

Back

Field Study

Card 3

Front

What is the 1st aim of Yarmey (2004)

Back

Preview of the front of card 3

Card 4

Front

What is the 2nd aim of Yarmey (2004)

Back

Preview of the front of card 4

Card 5

Front

How many participants were there?

Back

Preview of the front of card 5
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