Validation of a Cognitive Diagnostic Model

This title is printed to order. This book may have been self-published. If so, we cannot guarantee the quality of the content. In the main most books will have gone through the editing process however some may not. We therefore suggest that you be aware of this before ordering this book. If in doubt check either the author or publisher’s details as we are unable to accept any returns unless they are faulty. Please contact us if you have any questions.

This research sought to fit a diagnostic classification model across multiple forms of a passage-based reading comprehension assessment using the attribute hierarchy method. Previous research on diagnostic classification models for reading comprehension assessments served as the basis for selection of the final set of attributes included in the hierarchy. The two different attribute hierarchies were compared to determine the best fit. Each model was fit to the data obtained from three forms of a large-scale operational assessment for high school students. One model consisted of nine attributes and the other model consisted of eleven attributes. Model-data fit for the two models was evaluated to determine if a single model of reading comprehension could be applied to multiple operational testing forms.