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Updated: Jul 15, 2025

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
Published on: February 19, 2018
Do nonlinguistic creatures deploy mental symbols for logical connectives in reasoning?
1Department of Psychology, Harvard University, Cambridge, MA, USA scarey@wjh.harvard.eduhttps://www.harvardlds.org/our-labs/carey-lab/susan-carey/.
Abstract:
Some nonlinguistic systems of representation display some of the six features of a language-of-thought (LoT) delineated by Quilty-Dunn et al. But they conjecture something stronger: That all six features cooccur homeostatically in nonlinguistic thought. Here I argue that there is no good evidence for nonlinguistic deductive reasoning involving the disjunctive syllogism. Animals and prelinguistic children probably do not make logical inferences.
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