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Sideridis, Georgios; Alahmadi, Maisa – Journal of Intelligence, 2022
The goal of the present study was to extend earlier work on the estimation of person theta using maximum likelihood estimation in R by accounting for rapid guessing. This paper provides a modified R function that accommodates person thetas using the Rasch or 2PL models and implements corrections for the presence of rapid guessing or informed…
Descriptors: Guessing (Tests), Reaction Time, Item Response Theory, Aptitude Tests
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Sideridis, Georgios D.; Tsaousis, Ioannis; Al-harbi, Khaleel A. – Journal of Psychoeducational Assessment, 2015
The purpose of the present study was to extend the model of measurement invariance by simultaneously estimating invariance across multiple populations in the dichotomous instrument case using multi-group confirmatory factor analytic and multiple indicator multiple causes (MIMIC) methodologies. Using the Arabic version of the General Aptitude Test…
Descriptors: Semitic Languages, Aptitude Tests, Error of Measurement, Factor Analysis
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Maij-de Meij, Annette M.; Kelderman, Henk; van der Flier, Henk – Multivariate Behavioral Research, 2010
Usually, methods for detection of differential item functioning (DIF) compare the functioning of items across manifest groups. However, the manifest groups with respect to which the items function differentially may not necessarily coincide with the true source of the bias. It is expected that DIF detection under a model that includes a latent DIF…
Descriptors: Test Bias, Item Response Theory, Models, Aptitude Tests