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Category Learning
Category learning
John K.Kruschke

What have we here? a man or a fish? dead or alive? A fish: he smells like a fish; a very ancient and fish-like smell; a kind of not of the newest Poor-John. A strange fish!

Shakespeare, The Tempest, Act II, Scene II, line 22; spoken by Trinculo

Categorization is Central to Cognition

Beachcombers categorize flotsam as man or fish. Players of 20 questions categorize things as animal, vegetable or mineral. Guards categorize approaches as friend or foe. Bystanders categorize flying objects: ‘Look, up in the sky! It's a bird; it's a plane! No, it's Superman!’ Categorization permeates cognition in myriad protean variations. Our categorization of an object we encounter determines what we do with it. If it is an old dead fish, we ...

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