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Short form differential item functioning

Short-form differential item functioning (DIF) analysis examines whether individual items in an abbreviated scale function equivalently across demographic or subgroup comparisons. When a scale is shortened, retained items must still behave fairly for all relevant groups — DIF analysis verifies this, ensuring that score differences reflect true ability or trait differences rather than item bias.

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Short-Form Differential Item Functioning Analysis

Taksonomisk metoderegister · latent-structure / psychometrics

Millsap, R. E. (2012). Statistical Approaches to Measurement Invariance. Routledge. · ISBN 978-0-8058-4507-0
Smith, R. M. (2000). Fit analysis in latent trait measurement models. Journal of Applied Measurement, 1(2), 199–218. · URL

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