Face Recognition
8 important questions on Face Recognition
What did Riddoch and Humphreys propose?
What kind of steps were in Riddoch & Humphreys framework? How does this relate to Marrs?
Next step = process features to form objects (equivalent to Marr's 2 1/2 D sketch)
Next step = create viewpoint invariant object representation (equivalent to Marr's 3D rep)
= using this model, you can see if patients have a deficit in any of these stages
What is a benefit of Riddoch & Humphrey's model?
E.g. HJA – can’t bind info shapes or segregate overlapping shapes, but can draw well = can’t bind features into shapes
Note: this is also consistent to Marr's.
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What are the limitations of Riddoch & Humprey's model?
- some aspects are under specified e.g. how is info passed between different stages of the model
Describe Bruce & Young's (1986) model for recognising faces.
1. creates a representation of the structure of the face (in the structural encoding unit)
2. matches structural description to existing knowledge about structure of familiar faces (in the face recognition unit)
3. matches face to information about people i.e. jobs, interests (in the person identity node unit)
4. Generates the name of the individual (in the name generation unit)
5. Links to other sources of relevant info& controls allocation of attention to different components of the cognitive system e.g. processing specific facial features, understanding their speech and recognising emotional states
What evidence shows that Bruce & Young's model is accurate?
Supporting evidence:
- Young, Hay & Ellis (1985) = 190 incidents when information is recalled but not the name. There were no reports of name but no information.
- Agnostic patients = can recall information but not names
= shows that recognition should occur faster than name generation
e.g Young et al., (1986): Participant’s faster to categorise familiar faces than to name faces
What are 2 benefits of Bruce & Young's model?
- accounts for differences in familiar and unfamiliar faces
What are 2 limitations of Bruce & Young's model?
- extremely vague description of the cognitive system
The question on the page originate from the summary of the following study material:
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