Browsing by Author "Masters, Geofferey N."

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    Banking non-dichotomously scored items
    (1986) Masters, Geofferey N.; Evans, John
    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 Critical Thinking Appraisal.
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    Common-person equating with the Rasch model
    (1985) Masters, Geofferey N.
    Two procedures, one based on item difficulties, the other based on person abilities, were used to equate 14 forms of a reading comprehension test using the Rasch model. These forms had no items in common. For practical purposes, the two procedures produced equivalent results. An advantage of common-person equating for testing the unidimensionality assumption is pointed out, and the need for caution in interpreting tests of common-item invariance is stressed.
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    Measuring attitude to school with a latent trait model
    (1984) Masters, Geofferey N.; Hyde, Norman H.
    A latent trait model for rating scales is used to analyze responses to an attitude-to-school questionnaire as part of an evaluation of projects operating in 10 Western Australian schools under the Australian Priority Schools Program. The invariance of item parameter estimates over the 10 schools is examined, and variations in item estimates from school to school are studied in the light of the different projects operating in these schools. Results show how the investigation of items that do not retain their difficulties from group to group can provide valuable insight into the ways in which calibration groups differ.