Summary: | What is the role of qualitative data? How should mixed approaches be considered? Is it necessary to complement the quantitative approach by the qualitative approach (Maziére et al., 2010) or the opposite? How can these two approaches be combined in a Language Acquisition research? What are the possibilities of generalization that these approaches provide? Besides those necessary theoretical discussions, our starting point is a qualitative research on the acquisition of the plural morpheme in Brazilian Portuguese (BP) in children between 1 year 11 months old and 2 years 7 months old (Hilário, 2012), whose linguistic production is intrinsically connected to their dialogic aspect (Bakhtin & Vološinov, 1973) and to the interaction among interlocutors (Bruner, 2004; Vygotsky, 1986). In this research through the usage of a computational tool (CLAN) it is expected to have more visibility of the quantitative results even if they are in a qualitative approach. Although, it should be taken into account the fact that each approach can achieve valid and relevant results (Valsiner 2000), i.e., with any given method it is possible to reach a kind of generalization (statistical or analytical).
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