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Please use this identifier to cite or link to this item: http://hdl.handle.net/2328/3115

Title: Misfits : people and their problems. What might it all mean?
Authors: Curtis, David D
Keywords: Item response theory
Data analysis
Measurement techniques
Issue Date: Nov-2001
Publisher: Shannon Research Press
Citation: Curtis, David (2001)Misfits : people and their problems. What might it all mean? International Education Journal v.2 n.4
Abstract: In the analysis of data, which arise from the administration of multiple choice tests or survey instruments and which are assumed to conform to a measurement model such as Rasch, it is normal practice to check item fit statistics in order to ensure that the items used in the instrument cohere to form a unidimensional trait measure. However, checking whether individuals also fit the measurement model appears to be less common. It is shown that poor person-fit compromises item parameter estimates and so it is argued that person-fit should be checked routinely in the calibration of instruments and in scoring individuals. Unfortunately, the meanings that can be ascribed to person-fit statistics for attitude instruments is not clear. A proposal for seeking the required clarity is developed. [Author abstract]
URI: http://hdl.handle.net/2328/3115
ISSN: 1443-1475
Appears in Collections:David Curtis

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