Titlebook: Quantitative Psychology; The 85th Annual Meet Marie Wiberg,Dylan Molenaar,Jee-Seon Kim Conference proceedings 2021 The Editor(s) (if applic

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Polytomous IRT Models Versus IRTree Models for Scoring Non-cognitive Latent Traits,n, school climate, and healthy lifestyle, among others. In this study we evaluate the performance of two different approaches to estimate non-cognitive latent traits from self-report questionnaires under the Item Response Theory (IRT) framework. Both traditional polytomous IRT models and the more re

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Item Level Measurement of Extreme Response Style,s to response style traits. In this study, we use anchoring vignette data in which the vignettes have different expected response levels to examine the variation of extreme response style (ERS) discrimination in relation to this vignette feature. We find that vignettes targeted to the middle of the

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On the Marginal Effect Under Partitioned Populations: Definition and Interpretation,xpression is characterised by the law of total probability and is shown to be a function of the independent variable. We discuss on the interpretation of the new measure of global marginal effect and illustrate its use with a real data set involving scores form a university entrance test in Chile.

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Equating Nonequivalent Groups Using Propensity Scores: Model Misspecification and Sensitivity Analyeen the test forms. The gold standard for this purpose is to use common items, however, not all testing programs have such items available. There might be other useful information available, and this paper studies the use of covariates in equating as a substitute for common items. To gain further in