Concepts and Reference: Defending a Dual Theory of Natural Kind Concepts
Dissertation, University of Turku (2008)
| Abstract | In this thesis I argue that the psychological study of concepts and categorisation, and the philosophical study of reference are deeply intertwined. I propose that semantic intuitions are a variety of categorisation judgements, determined by concepts, and that because of this, concepts determine reference. I defend a dual theory of natural kind concepts, according to which natural kind concepts have distinct semantic cores and non-semantic identification procedures. Drawing on psychological essentialism, I suggest that the cores consist of externalistic placeholder essence beliefs. The identification procedures, in turn, consist of prototypes, sets of exemplars, or possibly also theory-structured beliefs. I argue that the dual theory is motivated both by experimental data and theoretical considerations. The thesis consists of three interrelated articles. Article I examines philosophical causal and description theories of natural kind term reference, and argues that they involve, or need to involve, certain psychological elements. I propose a unified theory of natural kind term reference, built on the psychology of concepts. Article II presents two semantic adaptations of psychological essentialism, one of which is a strict externalistic Kripkean-Putnamian theory, while the other is a hybrid account, according to which natural kind terms are ambiguous between internalistic and externalistic senses. We present two experiments, the results of which support the strict externalistic theory. Article III examines Fodor’s influential atomistic theory of concepts, according to which no psychological capacities associated with concepts constitute them, or are necessary for reference. I argue, contra Fodor, that the psychological mechanisms are necessary for reference. | |||||||||
| Keywords | Theories of reference Psychology of concepts Semantic externalism Semantic internalism Causal theory of reference Description theory of reference Psychological essentialism Informational semantics Concept atomism | |||||||||
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Howard Sankey (1991). Feyerabend and the Description Theory of Reference. Journal of Philosophical Research 16:223-232.
Linda Zagzebski (2010). Exemplarist Virtue Theory. Metaphilosophy 41 (1):41-57.
James Genone & Tania Lombrozo (2012). Concept Possession, Experimental Semantics, and Hybrid Theories of Reference. Philosophical Psychology 25 (5):1-26.
Ingo Brigandt (2004). Biological Kinds and the Causal Theory of Reference. In J. C. Marek & M. E. Reicher (eds.), Experience and Analysis: Papers of the 27th International Wittgenstein Symposium. Austrian Ludwig Wittgenstein Society.
Jussi Haukioja (2009). Intuitions, Externalism, and Conceptual Analysis. Studia Philosophica Estonica 2:81-93.
Jussi Jylkkä (2009). Why Fodor's Theory of Concepts Fails. Minds and Machines 19 (1):25-46.
Jussi Jylkk (2009). Psychological Essentialism and Semantic Externalism: Evidence for Externalism in Lay Speakers' Language Use. Philosophical Psychology 22 (1):37 – 60.
Jussi Jylkkä (2008). Theories of Natural Kind Term Reference and Empirical Psychology. Philosophical Studies 139 (2):153-169.
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