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1 Lingwistyka Stosowana / Applied Linguistics / Angewandte Linguistik

1 2011

1 Michońska-Stadnik A.

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Trafność i rzetelność w badaniach glottodydaktycznych

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Michońska-Stadnik A.

Lingwistyka Stosowana / Applied Linguistics / Angewandte Linguistik

2011

nr 4

31-40

For years second language acquisition (SLA) studies have been using research methods originally employed in other social sciences, e.g. in psychology and sociology. A unique character of SLA investigations, resulting from their specific conditions and actions (i.e. researching language skills versus knowledge), allowed for a number of developments in research methods, especially in the area of validity and reliability of their procedures and instruments. Statistical measures, exceptionally popular about ten years ago, appeared to be not fully adequate to give a true picture of the complex process of language acquisition and its variables. What is proposed nowadays are mixed research types, both qualitative and quantitative, successfully applying instruments appropriate for each type respectively. Consequently, the problem of research credibility should be considered with more attention. The concepts of validity and reliability of research studies and instruments should be regarded from both the qualitative and quantitative perspective. Each research type requires a different approach to these two basic constructs, and studies of mixed character will have to make an adequate use of qualitative and quantitative interpretations of validity and reliability.