The sibling familiarity effect: Is within‐person facial variability shared across siblings?
Open Access
- 7 July 2021
- journal article
- research article
- Published by Wiley in British Journal of Psychology
- Vol. 113 (1), 327-345
- https://doi.org/10.1111/bjop.12517
Abstract
Humans are experts at familiar face recognition, but poor at unfamiliar face recognition. Familiarity is created when a face is encountered across varied conditions, but the way in which a person’s appearance varies is identity-specific, so familiarity with one identity does not benefit recognition of other individuals. However, the faces of biological siblings share structural similarities, so we explored whether the benefits of familiarity are shared across siblings. Results show that familiarity with one half of a sibling pair improves kin detection (experiment 1), and that unfamiliar face matching is more accurate when targets are the siblings of familiar versus unfamiliar individuals (experiment 2). PCA applied to facial images of celebrities and their siblings demonstrates that faces are generally better reconstructed in the principal components of a same-sex sibling than those of an unrelated individual. When we encounter the unfamiliar sibling of someone we already know, our pre-existing representation of their familiar relation may usefully inform processing of the unfamiliar face. This can benefit both kin detection and identity processing, but the benefits are constrained by the degree to which facial variability is shared.Keywords
This publication has 42 references indexed in Scilit:
- Stable face representationsPhilosophical Transactions B, 2011
- The Glasgow Face Matching TestBehavior Research Methods, 2010
- Human ability to detect kinship in strangers' faces: effects of the degree of relatednessProceedings. Biological sciences, 2009
- Evidence for a contact-based explanation of the own-age bias in face recognitionPsychonomic Bulletin & Review, 2009
- Hits and false positives in face matching: A familiarity-based dissociationPerception & Psychophysics, 2007
- Kin recognition and the perceived facial similarity of childrenJournal of Vision, 2006
- Matching as an index of face familiarityVisual Cognition, 2004
- Thirty years of investigating the own-race bias in memory for faces: A meta-analytic review.Psychology, Public Policy, and Law, 2001
- Thirty years of investigating the own-race bias in memory for faces: A meta-analytic review.Psychology, Public Policy, and Law, 2001
- Eigenfaces for RecognitionJournal of Cognitive Neuroscience, 1991