The Logic of Latent Variable Analysis as Validity Evidence in Psychological Measurement

What is it about?

This paper explains the link between latent trait modes (EFA, CFA, Rasch model, etc.) and construct validity in educational and psychological measurement.

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Why is it important?

Many students and researchers use a latent trait model (exploratory/confirmatory factor analysis, Rasch model, etc.) to validate tests but don’t know why the fit of a model is considered validity evidence. This paper explains why fit of data to a latent trait model constitutes evidence for construct validity.