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Rios, Joseph A.; Miranda, Alejandra A. – Educational Measurement: Issues and Practice, 2021
Subscore added value analyses assume invariance across test taking populations; however, this assumption may be untenable in practice as differential subdomain relationships may be present among subgroups. The purpose of this simulation study was to understand the conditions associated with subscore added value noninvariance when manipulating: (1)…
Descriptors: Scores, Test Length, Ability, Correlation
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Prieto, Luis; Alonso, Jordi; Lamarca, Rosa; Wright, Benjamin D. – Journal of Outcome Measurement, 1998
Data from 45 studies involving 9,149 people were used to develop a short form of the Spanish version of the Nottingham Health Profile through Rasch analysis. Results confirmed the validity of using the developed 22-item short form to measure different groups of people categorized by gender, clinical, and health status. (SLD)
Descriptors: Groups, Health, Individual Characteristics, Item Response Theory