INTRODUCTION: The use of psychometric tools such as tests or inventories comes with an
agreement and acceptance that psychological characteristics, such as abilities, attitudes or …

A Single Cohesive Framework of Tools and Procedures for Psychometrics and Assessment
Bayesian Psychometric Modeling presents a unified Bayesian approach across traditionally …

Item response theory (IRT) is widely used in education and psychology and is expanding its
applications to other social science areas, medical research, and business as well. Using R …

Currently there are many introductory textbooks on educational measurement and
psychometrics as well as R. However, there is no single book that covers important topics in …

International large-scale assessments (LSAs), such as the Programme for International
Student Assessment (PISA), provide essential information about the distribution of student …

This paper outlines a computerized adaptive testing (CAT) framework and presents an R
package for the simulation of response patterns under CAT procedures. This package …

In this article, the Rasch model is used for assessing a mean difference between two groups
for a test of dichotomous items. It is assumed that random differential item functioning (DIF) …

In educational large-scale assessment studies such as PISA, item response theory (IRT)
models are used to summarize students' performance on cognitive test items across …

The main objective of exams consists in performing an assessment of students' expertise on
a specific subject. Such expertise, also referred to as skill or knowledge level, can then be …

A growing body of research indicates that forecasting skill is a unique and stable trait:
forecasters with a track record of high accuracy tend to maintain this record. But how does …