A contribuição das informações distribucionais de DNA nas etapas iniciais da aquisição lexical

Abstract

This study investigates the capacities of abstraction and generalization of linguistic patterns in the early stages of the acquisition of mother tongue, emphasizing the relationship of nonadjacent dependencies (DNA) and exploring the relationship between functional items and word markers of nouns. Unlike previous studies, which used artificial languages - whose phonological, morphological and prosodical properties were very simple - this research uses a pseudonatural language, preserving such properties. The conciliation between a psycholinguistic model aimed at the acquisition of language (Phonological Bootstrapping: Morgan & Demuth, 1996; Christophe et al., 1997) and a linguistic theory based on interface levels (Minimalist Program, Chomsky, 1995; 1999) allows us to understand the passage from one level of phonetic/phonological representation to a level of formal representation. Assuming also that statistical mechanisms of abstraction and generalization are resources available to infants and exploited early by them in the process of categorization of lexical (Marcus et al., 1999; Gómez, 2002; Newport & Aslin, 2004), the conciliation between the two theories aims to clarify how the child extracts from the sonorous continuum as well as distributional and prosodic clues, properties of the formal traces of the functional elements in which the Computational System acts resulting linguistic derivations. Babies at 11 months were exposed for a short period of time to a language other than their mother tongue and later exposed to new DPs congruent or not to those previously presented. The results indicate that babies reacted to different patterns of DNA according to those previously presented, listening longer to unfamiliar patterns, suggesting that from a short exposure to a pseudonatural language, babies at 11 months are able to abstract and generalize the pattern of this language. These results suggest that mechanisms of abstraction and generalization can be used by children in the initial process of language acquisition.