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Emergence from what? Comments on Sabbagh & Gelman

Published online by Cambridge University Press:  16 November 2000

BRIAN MACWHINNEY
Affiliation:
Department of Psychology, Carnegie Mellon University

Abstract

Sabbagh & Gelman (S&G) present an insightful criticism of the emergentist approach to language acquisition. The analysis takes as its starting point an expressed frustration with the fact that emergentism is not packaged as a single theory or formalism. As a result, S&G decide to focus their critical attention on a particularly strong version of emergentism in which, ‘only domain-general tools are required to account for language development.’ This strong formulation of the emergentist position matches up well with the disembodied connectionism of the 1980s (Rumelhart & McClelland, 1986). However, it misrepresents the richer expressions of emergentism being developed by the authors of this volume. In particular, this ‘strong’ version fails to properly appreciate the degree to which emergentists view cognition as grounded on the body, the brain, and the social situation.

Consider a simple example from phonological development. There is a universal tendency to avoid sequences of nasal consonants followed by voiceless obstruents, as might arise in forms like ‘manpower.’ This constraint is grounded on the facts of speech production (Huffman, 1993) and figures prominently in recent elaborations of Optimality Theory (Kager, 1999). Languages use at least five phonological processes to deal with this problem. These processes include nasal substitution, post-nasal voicing, denasalization, nasal deletion, and vowel epenthesis. Initially, children may apply a variety of these processes (Bernhardt & Stemberger, 1998). Which processes are preserved and which are dropped out will depend on the shape of the target language, whether it be Indonesian, Quechua, Toba Batak, English, or Kelantan Malay. In the terms used by S&G, each of these phonological processes is a small emergentist ‘buzzsaw’ cutting patterns that are shaped not by some innate cognitive ‘blueprint,’ but by the emergent facts of articulatory phonology.

Type
REVIEW ARTICLE AND DISCUSSION
Copyright
© 2000 Cambridge University Press

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