Estimated parameters of the 51 items according to Samejima’s Graded Response Models (GRM) and the two-parameter logistic model (2PL).
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Note.a: Item discriminative power according to the MRG; b(k): Item difficulty index; λ: (λ = a/√(1+a2)) degree of relationship between θ and the continuous variable underlying the item;a*: item discrimination parameter;b*: item location parameter.
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2015-12-02
