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The Rediscovery of Bifactor Measurement Models
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Reise, Steven P. – Multivariate Behavioral Research, 2012
Bifactor latent structures were introduced over 70 years ago, but only recently has bifactor modeling been rediscovered as an effective approach to modeling "construct-relevant" multidimensionality in a set of ordered categorical item responses. I begin by describing the Schmid-Leiman bifactor procedure (Schmid & Leiman, 1957) and highlight its…
Descriptors: Models, Factor Structure, Factor Analysis, Correlation
Factor Structure of the Penn State Worry Questionnaire: Examination of a Method Factor
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Hazlett-Stevens, Holly; Ullman, Jodie B.; Craske, Michelle G. – Assessment, 2004
The Penn State Worry Questionnaire (PSWQ) was originally designed as a unifactorial measure of pathological trait worry. However, recent studies supported a two-factor solution with positively worded items loading on the first factor and reverse-scored items loading on a second factor. The current study compared this two-factor model to a negative…
Descriptors: Measures (Individuals), Psychometrics, Factor Structure, Questionnaires