Examining the Robustness of the Graded Response and 2-Parameter Logistic Models to Violations of Construct Normality
Sign Up to like & getrecommendations! Published in 2022 at "Educational and Psychological Measurement"
DOI: 10.1177/00131644211063453
Abstract: When fitting unidimensional item response theory (IRT) models, the population distribution of the latent trait (θ) is often assumed to be normally distributed. However, some psychological theories would suggest a nonnormal θ. For example, some… read more here.
Keywords: graded response; parameter logistic; normality; parameter ... See more keywords
Univariate and multivariate skewness and kurtosis for measuring nonnormality: Prevalence, influence and estimation
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DOI: 10.3758/s13428-016-0814-1
Abstract: Nonnormality of univariate data has been extensively examined previously (Blanca et al., Methodology: European Journal of Research Methods for the Behavioral and Social Sciences, 9(2), 78–84, 2013; Miceeri, Psychological Bulletin, 105(1), 156, 1989). However, less… read more here.
Keywords: skewness kurtosis; multivariate; nonnormality; univariate multivariate ... See more keywords