Abstract

model meaning as the relations among abstract symbols that are arbitrarily related to what they signify. These symbols are ungrounded in that they are not tied to perceptual experience or action. Because the symbols are ungrounded, they cannot, in principle, capture the meaning of novel situations. In contrast, participants in three experiments found it trivially easy to discriminate between descriptions of sensible novel situations (e.g., using a newspaper to protect one’s face from the wind) and nonsense novel situations (e.g., using a matchbook to protect one’s face from the wind). These results support the Indexical Hypothesis that the meaning of a sentence is constructed by (a) indexing words and phrases to real objects or perceptual, analog symbols; (b) deriving affordances from the objects and symbols; and (c) meshing the affordances under the guidance of syntax. © 2000 Academic Press Key Words: meaning; language; embodiment; computational models; Latent Semantic Analysis; Hyperspace Analogue to Language. Meaning is the most important problem in cognitive psychology. Meaning controls memory and perception. Meaning is the goal of communication. Meaning underlies social activities and culture: To a great degree, what distinguishes human cultures are the meanings they give to natural phenomena, artifacts, and human relations. Yet, rather than being a hotbed of theoretical and empirical investigation, meaning in cognitive psychology has been coopted by a particular approach: Meaning arises

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