PSYCH 2H03 Lecture Notes - Lecture 9: Ludwig Wittgenstein, Prototype Theory, Dachshund
12 Apr 2018
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What is a concept, a mental representation, what is a category, the set of entities or examples described by the concept. Ludwig wittgenstein - no strictly defining line for what fits in a category and what does not. The classical view: concepts have defining features or attributes: most of our knowledge (as we use it day to day) isn"t based on definitions. Rules: definitions - a small set of necessary and sufficient conditions for deciding whether something belongs in the category. Family resemblance: wittgenstein: category members have a family resemblance to each other. Some feature in common, but not every member has to have those features: different members have different features in common. If you have these features, then you have x likelihood of belonging to category y. Probabilistic view: no necessary conditions for belonging to a category, no sufficient definitions either: does not mean that categories have no structure.
