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The relative importance of external and internal features of facial composites
Author(s) -
Frowd Charlie,
Bruce Vicki,
McIntyre Alex,
Hancock Peter
Publication year - 2007
Publication title -
british journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.536
H-Index - 92
eISSN - 2044-8295
pISSN - 0007-1269
DOI - 10.1348/000712606x104481
Subject(s) - composite number , matching (statistics) , set (abstract data type) , composite material , psychology , face (sociological concept) , face perception , feature (linguistics) , facial recognition system , perception , pattern recognition (psychology) , materials science , mathematics , computer science , cognitive psychology , statistics , linguistics , programming language , philosophy , neuroscience
Three experiments are reported that compare the quality of external with internal regions within a set of facial composites using two matching‐type tasks. Composites are constructed with the aim of triggering recognition from people familiar with the targets, and past research suggests internal face features dominate representations of familiar faces in memory. However the experiments reported here show that the internal regions of composites are very poorly matched against the faces they purport to represent, while external feature regions alone were matched almost as well as complete composites. In Experiments 1 and 2 the composites used were constructed by participant‐witnesses who were unfamiliar with the targets and therefore were predicted to demonstrate a bias towards the external parts of a face. In Experiment 3 we compared witnesses who were familiar or unfamiliar with the target items, but for both groups the external features were much better reproduced in the composites, suggesting it is the process of composite construction itself which is responsible for the poverty of the internal features. Practical implications of these results are discussed.