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Rasch models, named after the Danish mathematician Georg Rasch, are a family of mathematical models used in psychometrics for measuring abilities, attitudes, or other latent traits. They are particularly significant in the field of educational and psychological testing. Here’s an overview of Rasch models in the context of psychometrics: Fundamental Principle Rasch models are based…

Egidio Robusto, a Professor of Psychometrics at the University of Padua since 2006, has a distinguished career in psychological research, particularly in the area of statistical and mathematical modelling applied to psychology. Prior to his current tenure, he served as a researcher at the Second University of Naples (now known as University of Campania Luigi…

Structural Equation Modeling (SEM) is a comprehensive statistical approach used in psychological research to analyze complex relationships among observed (measured) and latent (unobservable) variables. It combines aspects of factor analysis and multiple regression analysis, allowing researchers to explore and test complex models that include multiple independent and dependent variables. Here’s a more detailed explanation of…