PSYCH211 Lecture Notes - Lecture 7: Family Resemblance, Brain Warp, Eleanor Rosch
26 Jul 2018
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Functions of categorization: understand indiv. cases you have not seen before and make inferences about them, reduce complexity of env. (est order in our knowledge base, help guide you to the appropriate action/motion. Approaches to the study of categorization and concepts. Similarity based similarity b/w stored exemplars; classical, prototype and exemplar. Each concept is defined by a set of necessary and sufficient features. Concepts are not representations of examples, but a list of characteristics. No (cid:858)(cid:271)etter or (cid:449)orse(cid:859) e(cid:454)a(cid:373)ples of a (cid:272)ategor(cid:455), all equivalent. Problem: some categories have no defining feature (i. e. sphinx cat) Typicality (graded membership): eleanor rosch found that people judge members of a (cid:272)ategor(cid:455) as differi(cid:374)g i(cid:374) (cid:862)good(cid:374)ess(cid:863) (cid:448)s. a set list of features i. e. crow vs. penguin in category birds. Evidence was found through rxn test times faster r(cid:454)(cid:374) ti(cid:373)e = parti(cid:272)ipa(cid:374)t thi(cid:374)k that this is a (cid:858)good(cid:859) (cid:373)e(cid:373)(cid:271)er. Objects are categorized by comparing them to mental abstractions which are idealized.
