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PSY270H1 (202)
Lecture

Lecture on Knowledge & Categorization

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Department
Psychology
Course
PSY270H1
Professor
Gillian Rowe
Semester
Fall

Description
Lecture 3 Definitional approach By checking potential members against a list of defining criteria Problems: most members fit in the category, but not all some are better examples of a concept than others difficult to specify that are necessary features Prototype approach Family resemblance: many overlapping features = high resemblance = high prototypicality Typicality effect: faster verification for high-prototypicality than low ones Good point: not all members are the same Problem: not necessarily one single average wide variations of items within a category Useful when initially average into prototype (and for large size) Exemplar approach Using real examples from the past, consider atypical cases as well Problem: need to know the example Useful when including exceptions (and for small size) What? strength weakness Semantic Knowledge organized Cognitive economy: Cant explain typicality network model in hierarchical manner shared properties effect stored at higher- Predominant feature leve
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