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571.
This study represents an attempt to sketch a processing model of phonological development in children acquiring their first language. The investigation is framed within a local connectionist network in which activation spreads between levels and inhibition within levels. Three ways are focused on in which an emergent processing system may diverge from a fully developed one—hypoactivation (too little activation due to underdeveloped links), hyperactivation (too much activation due to overloaded links) and impaired self‐inhibition. With a view to determining how children's productions relate to these three “error mechanisms,” one widespread phonological process, consonant harmony, is subjected to examination. Hypoactivation is found to capture the great majority of harmonic patterns. Hyperactivation and impaired self‐inhibition play a more marginal role and are only needed to account for exceptional cases of harmony. The feasibility of the psycholinguistic model is demonstrated with the help of computer simulations that were run with noise on both fully developed and developing networks. The model makes a number of predictions including the claim that difficult sounds are acquired in coda positions first. 相似文献
572.
Nick C. Ellis 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》1996,49(1):234-250
This paper argues that working memory is heavily involved in language acquisition as (a) a major part of language learning is the learning of sequences, (b) working memory allows short-term maintenance of sequence information, and (c) short-term rehearsal of sequences promotes the consolidation of long-term memories of language sequences. It first reviews evidence supporting this position. Next it presents an experiment that demonstrates that subjects encouraged to rehearse foreign language (FL) utterances are better than both silent controls and subjects who are prevented from rehearsal by articulatory suppression at (a) learning to comprehend and translate FL words and phrases, (b) explicit metalinguistic knowledge of the detailed content of grammatical regularities, (c) acquisition of the FL forms of words and phrases, (d) accuracy in FL pronunciation, and (e) some aspects of productive (but not receptive) grammatical fluency and accuracy. Finally, it describes possible mechanisms underlying these effects. 相似文献