O desenvolvimento da estrutura silábica CCV no português brasileiro como L1 via Teoria dos Sistemas Dinâmicos Complexos

Abstract

This study investigates the phonetic-phonological development of Brazilian Portuguese as L1, with an emphasis on the acquisition of the CCV syllabic structure. The central objective of this research is to carry out a re-reading of the case study presented by Barbieri (2019) – which deals with the process of acquiring the syllabic constituent complex onset by a child speaking BP as their mother tongue –, using as a basis the Theory of Complex Dynamical Systems. The specific objectives are i) to infer, through analysis via TSDC, the presence of variability and investigate whether this indicates that the system is undergoing a phase change; ii) observe the presence of variability within the system, as well as the existence of constructive and competitive relationships (Verspoor; Van Dijk, 2011) between its components, in order to interpret what these variations represent in the development process of the child's linguistic system ; iii) analyze, via TSDC, the emergence and behavior of the vowel element over time in the process of developing the CCV structure; iv) clarify, through analysis via TSDC, whether the greater temporal duration in CCV syllables than in CV syllables relates to a compensatory lengthening strategy, which is, therefore, a characteristic process in the development of constituents and syllable patterns in speech infantile, or is it a particularity of the CCV syllable, which persists even after the completion of all the developmental stages of L1, considering the eclipsing of the base vowel and v) to determine whether it is possible to predict, via TSDC, developmental tendencies of the child's system through a reduced number of collections. The data and results from Barbieri's (2019) research were submitted to analysis via TSDC, by carrying out the following descriptive and inferential statistical calculations: developmental graphs, trend line graphs, minimum and maximum graphs and Change analysis -Points. The results obtained show that the abrupt changes in duration values in the initial collections correspond to phase changes, which were evidenced by the presence of great variability in the minimum and maximum graphs and by the detection of phase changes in the change-point graphs. The segments involved in the production of CCV present competitive relationships in some periods, stabilizing in the final collections, which may mean a temporary accommodation of the system, which will later go through moments of variability to reach the target form. The results regarding the vowel element show that the dynamic adjustments regarding the accommodation of this segment were still ongoing, so that this component did not resemble, in durational terms, the pronunciation of adults during the period analyzed. In the analysis of the duration of the base vowel, there was no significant variability in most of the individual trajectories, and the change-point analyzes performed showed a phase change only in the production of the vowel in the context of the obstruent [p] in the production of the CV syllable, with no signs of compensatory stretching. Regarding the identification of patterns, it was observed that attractor states were identified in individual trajectories, which indicates the validity of the application of the theoretical model. even with a reduced number of data collections.