Harwood, Ian A.
Managing summative computer-aided assessment failures: further evidence for 'optional substitution'
British Journal of Educational Technology, 37, (4), . (doi:10.1111/j.1467-8535.2006.00583.x).
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A recent BJET article (Harwood, 2005) has outlined how 'optional substitution' was used to recover from a large-scale summative CAA failure. This follow-up article draws on a new (full) data set to confirm the appropriateness of using maximum formative marks (rather than average formative scores for instance) as a proxy measure of summative performance. A decision-making aid is also provided to guide those unfortunate enough to be considering the use of optional substitution following a CAA failure.
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