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Zachary Himmelsbach

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Oct 2026

Idiographic Item Response Theory: Modeling Person-Specific Differential Item Functioning in Intensive Longitudinal Data.

Idiographic theories of psychological measurement emphasize that the relationships between item responses and a latent trait may vary across individuals, yet typical item response theory (IRT) models assume item parameters are constant across persons. We propose an IRT approach for modeling person-specific (idiographic...

Joshua B. Gilbert, Edward J. Kim, Zachary Himmelsbach et al. · 0 citations

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