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Q-matrix is a
“method, which examines the inputs of many students to automatically extract relationships between questions and underlying concepts, and then uses those relationships in diagnosing and correcting student misconceptions.”
domain-independent knowledge model
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
1)
Approaches:
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.