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Addressing the Divide Between Psychology and Psychometrics
Statistical Methods and Data Analysis

Addressing the Divide Between Psychology and Psychometrics

The article “Rejoinder to McNeish and Mislevy: What Does Psychological Measurement Require?” by Klaas Sijtsma, Jules L. Ellis, and Denny Borsboom provides a detailed response to criticisms and discussions raised by McNeish and Mislevy regarding the role and application of the sum score in psychometric practices. The authors address core …

Interpreting Differential Item Functioning with Response Process Data
Statistical Methods and Data Analysis

Interpreting Differential Item Functioning with Response Process Data

Understanding differential item functioning (DIF) is critical for ensuring fairness in assessments across diverse groups. A recent study by Li et al. introduces a method to enhance the interpretability of DIF items by incorporating response process data. This approach aims to improve equity in measurement by examining how participants engage …

Integrating SDT and IRT Models for Mixed-Format Exams
Statistical Methods and Data Analysis

Integrating SDT and IRT Models for Mixed-Format Exams

Lawrence T. DeCarlo’s recent article introduces a psychological framework for mixed-format exams, combining signal detection theory (SDT) for multiple-choice items and item response theory (IRT) for open-ended items. This fusion allows for a unified model that captures the nuances of each item type while providing insights into the underlying cognitive …

Everyday Physical Activity and Cognitive Health
Cognitive Abilities and Intelligence

The Link Between Physical Activity and Cognitive Health

Recent research highlights how everyday physical activity can benefit cognitive health. A study by Hakun et al. (2024) examined the short-term effects of regular physical activity on mental processing speed and working memory. Using real-time assessments, the study provides new insights into how light and moderate physical activities can promote …