knowledge_assessment:q-matrix
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knowledge_assessment:q-matrix [2012/07/04 16:30] jpetrovic |
knowledge_assessment:q-matrix [2012/07/05 10:04] jpetrovic |
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| * domain-independent knowledge model | * domain-independent knowledge model | ||
| * originally a binary matrix showing the relationship between test items and latent or underlying attributes, or concepts | * originally a binary matrix showing the relationship between test items and latent or underlying attributes, or concepts | ||
| + | * To build the q-matrix, experts constructed a relationship between test questions and concepts (referred to as attributes) and students taking the test were assigned knowledge states based on their test answers and the constructed q-matrix ((see Ham85 for a discussion of item-response theory)) | ||
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| + | {{:knowledge_assessment:qm.jpg}} | ||
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| + | Approaches: | ||
| + | * Hand construction of the q-matrix by assigning concepts to questions and then comparing student answers to closest matrix responses. Problems: a q-matrix is a much more | ||
| + | abstract measure of the relationships of questions to concepts. We might assume that the | ||
| + | questions designed to test students are a more accurate reflection of the teaching | ||
| + | objectives than an abstract construct which relates questions to underlying concepts. | ||
knowledge_assessment/q-matrix.txt ยท Last modified: 2023/06/19 18:03 (external edit)
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