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Zhang, J. Categorization of affordances. Retrieved March 20, 2006, from http://acad88.sahs.uth. ... /hi6301/affordance.html 
Added by: sirfragalot (03/20/2006 04:30:12 PM)   
Resource type: Web Article
BibTeX citation key: Zhang
View all bibliographic details
Categories: General
Keywords: Affordance, Cognition, perception
Creators: Zhang
Views: 6/542
Quotes
   "Affordances provided by the environment are what it offers, what it provides, what it furnishes, and what it invites"   Added by: sirfragalot
Keywords:   Affordance
   "The "values" and "meanings" of things in the environment can be directly perceived. "Values" and "meanings" are external to the perceiver"   Added by: sirfragalot
Keywords:   Affordance
   "Affordances are relative to animals. They can only be measured in ecology, but not in physics"   Added by: sirfragalot
Keywords:   Affordance
   "An affordance is an invariant"   Added by: sirfragalot
Keywords:   Affordance
   "Affordances are holistic. What we perceive when we look at objects are their affordances, not their dimensions and properties"   Added by: sirfragalot
Keywords:   Affordance
   "An affordance implies complementarity of the perceiver and the environment. It is neither an objective property nor a subjective property, and at the same time it is both. It cuts across the dichotomy of subjective-objective"   Added by: sirfragalot
Keywords:   Affordance
   "External representations belong to the environment; and internal representations belong to the organism"   Added by: sirfragalot
Keywords:   Affordance
Paraphrases
   Zhang applies Gibson's system of affordances to the theory of distributed representation:

a) The external representational space is specified by the environment's information and structures.
b) The internal representational space is specified by the organism's physical structures and biological, perceptual and cognitive mechanisms and faculties.
c) The affordance space is the distributed representational space specified by external and internal representational space.
d) Both internal and external representational spaces can be defined by constraints and allowable actions.
e) If the two spaces are defined by constraints then the affordance space is defined as the disjunction (i.e. sum) of all constraints.
f) If the two spaces are defined by actions, the affordance space is the conjunction (i.e. actions common across both spaces) of these actions.

  Added by: sirfragalot
Keywords:   Affordance
   Gibson's original system of affordances while not denying the importance of memory in the construction of affordances, ignored the concept or possibility of internal representation.   Added by: sirfragalot
Keywords:   Affordance
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