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COGNITION Face perception
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Cognitive Psychology and Cognitive Disorders - CLPS11052 - Lecture notes, reading notes, essays, exam preparation
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COGNITION Module introduction
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COGNITION Visual perception and object recognition
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chilllax
Voorbeeld van de inhoud
Week 3, Face perception26 September 2022 18:39
1) Evidence that face recognition involves several topic 3 Applied Face Recognition
Topic 1 Basic Processes in Face Recognition separate stages of processing
2) Evidence that different cognitive mechanisms
Video 1: extract different kinds of meanings from faces
Theoretical approaches to face processing 3) Whether or not faces are special
Faces have the same structure, but effortless recognize average 5000s of 4) How applied problems have stimulated
faces despite aging and other factors. This face recognizing system have research on face identification
to deal with that, uses inherit traits. 5) How basic science on face identification has APPLIED FACE RECOGNITION
had an impact on the criminal justice system
Video 2:
STAGES OF PROCESSING IN FACE RECOGNITION
Perceptual processes vs cognitive process
FACE RECOGNITION DIAGRAF DESCRIPTION: Diagnostic of what makes the face what It is. End of perceptual
topic 2 Are Faces Special?
Processes and representations False eye-witness testimony
FACES ARE SPECIAL Devlin report and Turnbull Guidelines
• Face-specific deficit (prosopagnosia)
• Brain imaging (Fusiform face area (FFA)
• Different representations involved in face and object recognitions
CONFIGUAL/HOLISTIC PROCESSING OF FACES: EFFECTS OF INVERSION
• Face recognition disproportionately impaired by inversion (Yin, 1969) The innocence project
• Face recognition may involve configuration of features as well as feature themselves.
• Inversion disrupts configural processing
EVIDENCE FOR DIFFERENT STAGES
• DIary study
• Patterns of breakdown after brain injury
• Laboratory Experiments
Which all suggest that face naming a face involves the separation of
these different kinds of processes
Upside down ---> disrupts ability extract previous information of the face
DIARY STUDY (young et al., 1985)
THATCHER ILLUSION
Psychology and Law
• Not as bad, in feature processing mode. Recognizing the mouth and eyes but it is all wrong
according to the previous information of the face. RECOGNITION MEMORY FOR FAMILIAR AND UNFAMILIAR FACES
COMPOSITE EFFECT
EXPERIMENTAL EVIDENCE FOR STAGES: DECISION SPEEDS
Humans are good at recognizing familiar pictures, but NOT UNFAMILIAR
SUMMARY:
People can recognize faster than knowing if they are politician vs • Significantly slower to name composite (upper+lower faces match) than non-composite stimuli. - Eyewitness memory for unfamiliar faces is poor
popstar? AND SLOWEST KNOWING THEIR NAME Due to new configuration of face is picked up, but when there's clear separation then that is - Witnesses have misplaced confidence
disrupt. - Processes and/or representations involved in familiar and unfamiliar face reco
EPERIEMTNAL EVIDENCE FOR STAGES: REPETITON PRIMING • Perception of novel facial configuration interfered with identification of constituent parts are different
No difference with upsidedown and whether it is comp/non-comp
Phase 2: introduced by face, or name or nothing. NO ADVANATGE OF CONFIGURAL PROCESSING OF FACES: SUMMARY
KNOWING THE NAME BEFOREHAND. (Ellis., A. W et al 1987)
• WITHIN DOMAIN REPETITION PRIMING OF FACES --> VISUAL REPS • Evidence suggest that upright, normal faces are represented congigurally
OF FACES • Configural processing is impaired when faces are inverted
• Configural processing not as important in object recognition
EXPERIMENTAL EVIDENCE: TIP OF THE TONGUE (TOT) STATE
IMPORTANCE OF SURFACE PROPERTIES
Surface properties: recognizing line drawings
RESOLVING TOT STATES
CANNOT RETRIVE/ACCESS THE NAME.
• Showing the face = no direct link between FRU and NAME
Surface information (shadings and conture of the face) is essential for recognizing
Surface properties: effects of negation
SUMMARY
Face/person recognition involves perceptual and memory processes,
which are at least partially separable.
VIDEO 3
Meaning of faces
We derive several types of socially important meanings from faces: Representation of the face preserved by memory is DISRUPT by negation
TWO POSSIBLE sources of information adversely affected negation:
• Pigmentation = skin and hair colour & variations in these
• Pattern of shading and shadow which may help 3D structure of face
SURFACE PROPERTIES: SUMMARY
Notes Page 1
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