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Jaehwa Choi

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Preprint Aug 2026

An Anchored Logistic Family for Bounded Trait Measurement and Growth: Origin Before Unit

Latent trait models differ less in what they measure than in what they fix. Item response theory frees the trait from the items administered but, in doing so, surrenders the origin and unit of the scale to convention. The Cognitive Trait Model (CTM; Choi, 2022) restores both by bounding the trait on [0, 1], where 0 den...

Jaehwa Choi · 0 citations

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