Raamatud Klaas Sijtsma
Introduction to Nonparametric Item Response Theory
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Introduction to Nonparametric Item Response Theory
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Measurement Models for Psychological Attributes
L. Andries van der Ark, Klaas Sijtsma
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Never Waste a Good Crisis: Lessons Learned from Data Fraud and Questionable Research Practices
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Never Waste a Good Crisis: Lessons Learned from Data Fraud and Questionable Research Practices
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Measurement Models for Psychological Attributes
L. Andries van der Ark, Klaas Sijtsma
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