gibson's direct theory of perception

• what does gibsons theory state


  the environment gives us all the information we need
• who does gibsons theory contrast to


  gregorys constructivist theory of perception
• what are gibsons 4 points


  1. sufficient info for direct perception
  2. optic array
  3. motion parallax
  4. influence of nature
• gibson-sufficient information for direct perception


  sensation and perception are the same.

  eyes detect everything we need without having to make inference.
• gibson-optic array


  eyes are advanced organs from birth that detect information about speed and distance
• gibson-motion parallax


  monocular depth cue.

  in a train, clser objects move faster, further objects move slower.

  able to detect info about speed and distance.
• gibson-influence of nature


  perception is there from birth, not learned
• what are 3 evaluation points of Gibson's theory


  +real world application

  -can't explain visual illusions

  +study support (visual cliff)
• gibson evaluation, real world application (+)


  P-real world application

  E-research done on WWII pilots

  C-relevant to daily life
• gibson evaluation, can't explain visual illusions (-)


  P-struggles to explain visual illusions

  E-perception is seen as accuarte, but illusions trick the brain

  C-theory is incomplete
• gibson evaluation, study support (+)


  P-study support for the role of nature

  E-gibson and walk showed that few infants walked off of a visual cliff

  C-shows they are born with depth perception