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Here's your wiki for Machery (Group 2)

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-at least in principle, scientific propositions are directly or indirectly confronted with experience

-psychology of concepts predates the 1950s

Theory of concepts: 1. what type of knowledge is stored in concepts? 2.How are concepts used by cognitive processes? 3.How is our knowledge stored? images? in words? 4. How do we acquire concepts

Why is //concept// so hard to define?

definitions: operationalization: process of strictly defining variables into measurable factors. The process defines fuzzy concepts and allows them to be measured, empirically and quantitively.