Search for: [Abstract = "The article demonstrates the consequences on validity when test items are misclassified as constructed\-response but in fact function as selected\-response. From the review of items included in the scientific part of the national exam \(2002–11\) that concludes 3\-year lower secondary school, 9 items, which were classified as constructed\-response but functioning in content and psychometrically as selected\-response, were identified. One such item was examined in a case study using IRT modelling. The study showed how guessing of correct responses to items might influence test validity when using an incorrectly classified format."]

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