Recognising E-fit - Bruce Flashcards
1
Q
Aim of Bruce
A
Investigate the relative recognisability of internal and external features of a facial composite
2
Q
Participants in experiment 1
A
- 30 staff and students from the uni of stirling
- staff paid £2
- 15 male 15 female
3
Q
Procedure of experiment 1
A
- 10 celebs and 40 composites
- Each face clean shaven and glasses avoided
- Independent measures desigin
- 3 composoites: Whole, external, composite
- Asked to match composite with celeb
- Take as much time as poss
4
Q
Results of Experiment
A
Whole and external composites = 35% correct
Internal = 19.5% correct
5
Q
Participants of Experiment 2
A
- 48 undergraduates from uni of Stirling
- 21 males 21 females
6
Q
Procedure of Experiment 2
A
- Composites shown one at a time, along with photo array
- Participants had to pick out celeb face with photo array
- Composites either internal or external
- Foils put in to make task harder
- Either easy or hard
7
Q
Results of Experiment 2
A
- External composites = 42% correct
- Internal composites = 24% correct
Consistent across all array type (easy or hard)
8
Q
Participants of Experiment 3
A
- 8 paid staff £10, to be participant witnesses.
- 54 volunteers did sorting task
- 16 did naming task
9
Q
Procedure of Experiment 3
A
- Familiar or unfamiliar faces shown to witnesses for 30 seconds
- They then created PRO-fit composites of the faces
- Only external and internal composites created
- randomly assigned to the sorters or namers
10
Q
Results of Experiment 3
A
- Sorting task had 57% accuracy, no difference whether familiar or unfamiliar
External = 53%
Internal = 32.6%
-Naming task = 22% accuracy whether familiar or unfamiliar
11
Q
Conclusion of Bruce
A
In all cases participants performed well with external or whole features. Indicates that something about internal features that does not work with reconstruction
