Abstract
There are two aspects to theory-based validity. One concerns a priori evidence collected before the test event, the other a posteriori evidence generated after the test has been administered (Weir 1988a).
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Further reading
Bachman (1990) gives good coverage of the cognitive aspects of ‘construct validity’.
Bachman and Palmer (1996) is an update on Bachman 1990, but with more practical exemplification.
Messick (1989) provides a much referred to and important discussion of validity, if somewhat opaque in parts.
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© 2005 Cyril J. Weir
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Weir, C.J. (2005). Before the Test Event: A Priori Validity Evidence. In: Language Testing and Validation. Research and Practice in Applied Linguistics. Palgrave Macmillan, London. https://doi.org/10.1057/9780230514577_4
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DOI: https://doi.org/10.1057/9780230514577_4
Publisher Name: Palgrave Macmillan, London
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