To compare the recognisability of internal and external features of facial composites
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What methodology did Brue use?
3 laboratory experiments
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How many participants took part in experiment 1 of Bruce's study?
30 staff and students
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How much were the participants paid in experiment 1 to sort the composites?
£2
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What were the stimuli used in experiment1?
target photos of 10 celebritied and 40 composite images
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What was avoided withing the photographs used by Bruce in experiment 1?
facial hair and spectacles
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WHat were the participants in experiment 1 asked to do with each composites?
To place it infront of the celebrity face in their own time until the task was complete
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What were the 3 sets of composites used within experiment 1?
a 'complete' set, a set containing only internal features and a set containing only external features
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What were the results of experiment 1?
People were more likely to identify the celebrity correctly if whole composites and those of external features were used
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How many participants took part in experiment 2?
48 undergraduates
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What was the procedure used for expeirment 2?
A photo array or photo line-up with distracter faces or foils were used making the task more difficult
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How were the faces and foils in experiment 2 made easy or hard to identify?
easy = all very different, hard=all very similar
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What were the participants asked to do in experiment 2?
The composites were presented one at a time along with the photo array and the participant had to pick out the celebrity face from the array which matched
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What were the 2 sets of composites used in experiment 2?
internal or external features
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What were the results of experiment 2?
Composites of external feature were more easily identified than internal features
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How many staff participated in experiment 3 ? and how much were they paid?
8 paid staff, £10
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How many volunteers participated in experiment 3?
54 did sorting task, 16 did a naming task
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What was the procedure of experiment 3?
familiar or unfamiliar target faces were presented to the 'witness' who created the composite after seeing them for 30 seconds. The images were then photoshopped into internal or external features. They were then randomly presented to sorters/namers
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What were the key results from experiment 3?
It did not matter whether the faces were familiar or unfamiliar, external more accurate than internal, same accuracy on naming task
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What conclusion was drawn from experiment 3?
There is something about internal features of a face that does not work well when trying to create a reconstruction
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Other cards in this set
Card 2
Front
What methodology did Brue use?
Back
3 laboratory experiments
Card 3
Front
How many participants took part in experiment 1 of Bruce's study?
Back
Card 4
Front
How much were the participants paid in experiment 1 to sort the composites?
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