Chapter 10: Language Processing & Cognitive Structure

Language Processing & Cognitive Structure distinguishes natural human language from animal communication systems by emphasizing its inherent regularity through grammar and its limitless productivity. The narrative breaks down linguistic structure into four essential domains: phonology, which investigates the fundamental sound units called phonemes; syntax, which explores the hierarchical organization of sentences into constituents; semantics, the study of how we extract meaning and resolve lexical ambiguity; and pragmatics, the social rules governing speech acts and conversational etiquette. In terms of speech perception, the text highlights the brain's ability to navigate continuous auditory input through categorical perception and the phoneme restoration effect, where listeners mentally supply missing sounds based on context. The complexity of sentence and text comprehension is further explained through models like the eye-mind hypothesis, the given-new strategy for integrating information, and the use of story grammars to organize narrative expectations. Central to the discussion of social interaction are the Gricean maxims of cooperative conversation, which establish norms for being informative, truthful, relevant, and clear. Furthermore, the chapter addresses major theoretical debates, such as Jerry Fodor’s modularity hypothesis, which posits that language is a specialized, informationally encapsulated system, and the Whorfian hypothesis concerning linguistic relativity. The exploration concludes with a neuropsychological perspective, detailing how damage to specific regions like Broca's and Wernicke's areas leads to different forms of aphasia and how linguistic functions are generally lateralized within the brain's left hemisphere.