Showing 2 Result(s)
Group-Theoretical Symmetries in Item Response Theory (IRT)
Statistical Methods and Data Analysis

Group-Theoretical Symmetries in Item Response Theory (IRT)

Item Response Theory (IRT) is a widely adopted framework in psychological and educational assessments, used to model the relationship between latent traits and observed responses. This recent work introduces an innovative approach that incorporates group-theoretic symmetry constraints, offering a refined methodology for estimating IRT parameters with greater precision and efficiency. …

Examining the Effect of Estimation Methods on SEM Fit Indices
Statistical Methods and Data Analysis

Examining the Effect of Estimation Methods on SEM Fit Indices

The study by Shi and Maydeu-Olivares (2020) analyzes how different estimation methods influence key fit indices in Structural Equation Modeling (SEM). By focusing on methods such as Maximum Likelihood (ML), Unweighted Least Squares (ULS), and Diagonally Weighted Least Squares (DWLS), the authors explore the nuances of model fit across various …