Related Experiment Video
Updated: May 13, 2026

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
Published on: July 3, 2020
Application of single-level and multi-level Rasch models using the lme4 package
1University of Cyprus, Cyprus. iasonas@ucy.ac.cy
Abstract:
The aim of the article is to illustrate how researchers may use the lme4 package to run multilevel Rasch models. The lme4 package is a popular open-source software and is frequently used by researchers around the world to fit generalized mixed-effects models with crossed or partially crossed random effects. The article starts with a short discussion of the reasons why a researcher might, sometimes, be motivated to use a multi-level Rasch model and presents a practical example using empirical data. The main features of the lme4 package are presented, and finally, the paper presents information about other open-source software that could alternatively be used to fit multi-level Rasch models.
More Related Videos
Related Concept Videos
Mechanistic Models: Compartment Models in Individual and Population Analysis
Response Surface Methodology
The process of RSM involves several key steps:
Friedman Two-way Analysis of Variance by Ranks
Introduction To Survival Analysis
The primary goal of survival analysis is to estimate survival time—the time until a...
Comparing the Survival Analysis of Two or More Groups
One-Compartment Open Model: Wagner-Nelson and Loo Riegelman Method for ka Estimation
On...

