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The Quantitative Dimension of Kind Concepts
Theo Fenton1, Sandeep Prasada2,3
1Program in Philosophy, Graduate Center, CUNY.
Abstract:
Thinking about things as instances of kinds and thinking about kinds are fundamental aspects of cognition. Current theories of conceptual representation specify the qualitative character of a kind via a definition, a prototype, exemplars, shared causal-explanatory structure, or the kind's inferential role in a broader theory, but they do not represent the quantitative dimension of kind representations. Four experiments investigated two characteristics of the quantitative dimension of kind and instance-of-kind representations. Experiments 1 and 2 found evidence that we understand kinds to be constituted of an unlimited number of instances of that kind. Experiments 3 and 4 provided evidence that whereas two instances of a given kind may be distinguished merely numerically, two kinds must also be qualitatively distinct. These, and other characteristics of the quantitative dimension of kind concepts must be accommodated by any viable theory of kind concepts.
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