A common way to form scores from multiple-item scales is to sum responses of all items.
Though sum scoring is often contrasted with factor analysis as a competing method, we …

Background Individuals have experienced various degrees of accessibility loss during the
COVID-19 pandemic, which may consequently have influenced their mental health …

Significantly revised, the fifth edition of the most complete, accessible text now covers all
three approaches to structural equation modeling (SEM)--covariance-based SEM …

In this fully revised Fourth Edition of Psychometrics: An Introduction, author R. Michael Furr
centers his presentation around a conceptual understanding of psychometric core issues …

The importance of providing structural validity evidence for test score (s) derived from
psychometric test instruments is highlighted by several institutions; for example, the …

Not much is known about how LLM-generated questions compare to gold-standard,
traditional formative assessments concerning their difficulty and discrimination parameters …

The aim of the study was to analyze the psychometric properties of the Spanish version of
the Coronavirus Anxiety Scale (CAS), using Item Response Theory (IRT) and Confirmatory …

Affect is central to human functioning. Due to its dynamic nature, it is often studied with
intensive longitudinal designs, yet the development and validation of measures for this …

To evaluate the fit of a confirmatory factor analysis model, researchers often rely on fit
indices such as SRMR, RMSEA, and CFI. These indices are frequently compared to …

We describe three studies that together provide a first approximation to a comprehensive
taxonomy of unique personality facets. In Study 1, we semantically sorted, removed …