Knowledge - Chapter 8 Knowledge Knowledge Concept mental...

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Chapter 8 – Knowledge Knowledge Concept: mental representation used for a variety of cognitive functions Categorization is the process by which things are placed into groups called  categories Why Categories are Useful “pointers to knowledge” Help interpret novel cases How Do We Categorize? By definition o A rule that specifies the necessary and sufficient aspects of a concept By family resemblance (Wittgenstein) o Definition + variation By prototype/exemplar   o (prototype abstraction)/(exemplar theory) Comparison to standard The Prototype Approach
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“standard” = prototype An average of category members encountered in the past Rosch (1975) o Present Category Title (“Weapon,” “Toy,” “ Furniture”) o Rate 50 category members 1 (very good e.g.) – 7 (very poor e.g.) Rosch & Mervis (1975) o
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  • Fall '08
  • Fasig
  • family resemblance, prototypical objects, Prototypical items, low family resemblance, Prototypicality Prototypical items, highly prototypical objects

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