Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Education
The Analysis Of Partial Credit Scoring, Geoff Masters
The Analysis Of Partial Credit Scoring, Geoff Masters
Prof Geoff Masters AO
This article discusses a range of issues in the practical application of an item response theory (IRT) method for partial credit scoring. After a brief discussion of partial credit scoring as an alternative to right-wrong scoring in the measurment of educational achievement, an IRT model for partial credit analysis is developed and described. This model is presented as a straightforward and logical application of Rasch's dichotomous model to a sequence of ordered response alternatives. The distinctive nature of the item parameters in the model is described and these parameters are contrasted with two more familiar sets of parameters: Thurstone thresholds …
Banking Non-Dichotomously Scored Items, Geoff Masters, John Evans
Banking Non-Dichotomously Scored Items, Geoff Masters, John Evans
Prof Geoff Masters AO
A method for constructing a bank of items scored in two or more ordered response categories is described and illustrated. This method enables multistep problems, rating scale items, question 'clusters', and other items using partial credit scoring to be calibrated and incorporated into an item bank, and it provides a mechanism for computer adaptive testing with items of this type. Procedures are described for calibrating an initial set of items, for testing the fit of items to the underlying measurement model, and for linking new items to an existing item bank. The method is illustrated using items from the Watson-Glaser …
Constructing An Item Bank Using Partial Credit Scoring, Geoff Masters
Constructing An Item Bank Using Partial Credit Scoring, Geoff Masters
Prof Geoff Masters AO
A method for banking test items scored in several ordered response categories is described. Each item is seen as an ordered sequence of steps, and test forms are equated using the estimated difficulties of the steps in their shared items. Procedures for analyzing the internal consistency of individual links and for analyzing the coherence of an entire linking structure are described. The methodology is used to link six forms of a mathematics problem solving test.