Volume 56, Issue 1
  • ISSN 0169-7420
  • E-ISSN: 2213-4883
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This paper reports on an analysis of the validity of instruments used to measure aspects of language acquisition. In essence, this paper deals with the degree to which the instruments are an adequate reflexion of the theoretical construct. The relation between theoretical construct and its operationalization is central to the analysis into the validity. Therefore Pienemann's Processability Theory (1994) which is used as a basis for the operationalization is outlined. A description is also given of the development of the instruments for grammatical aspects of language acquisition. The analysis to the validity of the instruments showed that the instruments used mainly measure the grammatical aspects. Although the correlation between the grammatical aspects is very high, the instruments are not necessarily invalid.


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  • Article Type: Research Article
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