LECTURE 7: FORM PERCEPTION
March 4 2013
- We naturally tend to group similar things together
- Preference for faces is innate: there was an experiment in which two stimuli were presented: one
had the same shape and features of a face and one was the same thing upside down. Babies
preferred the one that resembled a face.
- Own race effect: difficulty recognizing people from other races
- Judging Face Attractiveness:
o Judging attractiveness might give you insight into the health of an individual: if you can
afford to have a very attractive face you are likely to be fit/healthy – this is the adaptive
significance of judging attractiveness
- What Makes Faces Important?
o Faces can reveal a lot about emotions
o 90% of liars show fear and disgust (30% of truth tellers do this)
o These are involuntary emotional responses that people make
o Liar or Truth-teller? (activity in class)
- Two strategies for face processing:
o Featural strategy: when you’re looking at a face, you look at all the different features
independently and then we put these together and identify it as a face
o Configural strategy: we actually process the whole face at once.
- The Composite Face Effect:
o Two faces – can you tell if they are from the same