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de la Torre, Jimmy; Douglas, Jeffrey A. – Psychometrika, 2008
This paper studies three models for cognitive diagnosis, each illustrated with an application to fraction subtraction data. The objective of each of these models is to classify examinees according to their mastery of skills assumed to be required for fraction subtraction. We consider the DINA model, the NIDA model, and a new model that extends the…
Descriptors: Markov Processes, Identification, Goodness of Fit, Subtraction