Face Recognition- Feature theory
- Created by: natjade96
- Created on: 19-04-15 15:43
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- Face Recognition- Feature Theory
- Bottom-up Theory
- Cues from the face are analysed by the brain & visual cues of features, textures and shade will be enough to recognise the face
- Faces are recognised as a set of parts arranged spacially
- Faces can be identified from very little information
- Internal & external features
- Internal- eyes, brows, nose and mouth
- External- head shape, hair and ears
- Ellis et al
- Unfamiliar faces rely on external features
- Familiar faces rely on internal features
- Supported by Bruce 2002
- Sadre et al
- 3 groups of participants with images lacking either eyes or eyebrows or an unaltered face
- Performance on images that lacked eyebrows was a lot worse than for other conditions
- Evaluation
- Young & Hay- Cut famous faces into halves and combined 2 different halves. The composite forms a new holistic face
- Capgras syndrome- Think people have been replaced by doubles
- Information is stored with emotional and semantic information
- Bruce & Valentine- scrambled faces take longer to identify
- Must be holistic
- Prosopagnosia
- Can't recognise familiar faces
- Studies show sufferers have no problem naming & describing individual features
- Must be holistic
- Yin- Inverted faces take longer to recognise because the relationship between the features cant be detected as easily. Must process features independently which takes longer
- Shepard et al
- Participants shown a picture of unfamiliar face than asked to describe it freely
- Features most noted were: hair, eyes, nose, mouth, eyebrows, chin and forehead (in that order)
- Lacks ecological validity & mundane realism as we normally see faces "live"
- Bottom-up Theory
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