Resumo:
Study about proparoxytonic stress and the proparoxytonic lexicon during the acquisition of
Portuguese as maternal language. We sought to verify ontogenic relationships between lexical
acquisition and accentual acquisition in proparoxytone words, to wich was verified: a)
phonological simplification recurses and strategies; b) occurrence of proparoxytonic words
over different age groups; c) the ontogenic path of the standard proparoxytonic accent and the
proparoxytonic lexicon; d) the individual regularity of children when producing
proparoxytons lexically and accidentally; e) the correspondences between spontaneous
evocation and standard accent evocation of proparoxytonic words. The research was carried
out from 3 (three) distinct corpus; 2 (two) of them extracted from the speech of children from
1; 6 (one year and six months) to 4; 0 (four years), some studied longitudinally and others
transversely; the 1 (one) corpus left was given by parental reports made available on a form
for this purpose. In theoretical review section, there are the definition of the object of study
(proparoxytone words) and studies directly or indirectly addressed to proparoxytones in
Portuguese, at Theory and Linguistic Analysis, at Historical Linguistics, at Dialectology and
Sociolinguistics and at Psycholinguistics. In data analysis, there are 3 (three) analysis
sections: (i) the accent analysis, in which the data of the children studied longitudinally is
described and interpreted; (ii) the lexical analysis, in which the 3 (three) corpus data is
described and interpreted; (iii) the confluence accent-lexicon analysis, in order to extract the
possible observable relations between these two linguistic levels. From thesecollected data, it
is possible to identify observable relationships between acquisition of proparoxytonic accent
and proparoxytonic lexicon, which is established after 2;01 (two years and one month); the
data show that a higher productivity of the proparoxytonic accent influences the
proparoxytonic lexical production, something corroborated with other previous studies that
establish relationships between phonological and lexical acquisitions.
