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Lecture 5

PSYCH 1XX3 Lecture Notes - Lecture 5: Facetime, Capgras Delusion, Selective Breeding


Department
Psychology
Course Code
PSYCH 1XX3
Professor
Christopher Teeter
Lecture
5

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Form Perception 03/03/2014
Faces
Brain assumes: Like objects are grouped
When shown image of three circles and line, your brain sections will light up (a little delayed)
Capgras Delusion and the Temporal Lobes
Amygdala asses the emotional significance of a stimulus
Neurons in the FFG respond to faces
Pariedolia – perception of something real within a vague stimulus
Artificial selection in Heikegani Crabs
Face in the bottom of the crab, following Japanese warriors have spirit involved with bottom of crab.
Humans artificially selecting for them.
The Face on mars from afar
Found that the area is just a mountain range
Why do people do this?
Big events are expected to have big causal expectations
In stories where people died, people always attribute it to conspiracies. If person doesn’t die it is seen that a
lunatic did it.
Coding and interpreting energy from the world
Is a preference for faces innate?
Is a preference for faces? Or just complex stimuli?
Face processing and experience
Top down processing: influence from experience
The Value of Face Processing
What makes Faces Important?
We prefer to look at attractive faces

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If you have an attractive face: you are more intelligent, warmer: how you are rated.
We also receive information about emotion and we behave differently around other people by the qualities
we decipher from others
Adaptive significance: Facial Hue Hypothesis
Health, face processing
Judging Face attractiveness: Universal attractiveness in face
Average is typically better: this is often referred to as the averageness effect (when you put all faces into an
average you are taking all the characteristics and mentally allowing fluid processing towards your mental
average.
The Averageness Hypothesis
Took sixty faces and made a composite, and took initial ratings from faces and took top 15 for composite
They took differences between 60 group and 15 and exaggerates them: Hyper attractive face
In this case: average increases right to left but attractiveness is rated in the opposite result.
6 Ekman faces: universal emotions and cross culturally you will see these emotions demonstrated.
Anger, fear, happiness, surprise, sadness, disgust
Liar or Truth teller
Listen carefully to stories told by your friends and consider whether they are liars or truth tellers
Ekman: 90% of liars faces show fear and disgust (compared to 30% of truth tellers)
You can train people to get better at spotting these differences
Face Processing
Two strategies for Face processing:
Configural processing: when you look at face you are looking at whole thing: holistic idea
Featural processing: not considered with holistic image
The composite Face effect: two faces caught at midline separating two parts
Task: say whether or not faces are same or different on just basis of top half
You could be using configural and featural processing
You take bottom half and slide it over and test the amount of time it takes to do the same thing
You can’t use all configural processing for this one.
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