In Memoriam: Eddy Roskam

On May 24th, 1997, we lost Prof. Dr. Eddy E.C.I. Roskam. He was active in Rasch measurement, participating in IOMW and AERA sessions. He presented an invited address to the SIG in 1993. His publications include "A new derivation of the Rasch model" (with P.G.W. Jansen, RMT 6:3 p.232.)

As a young researcher he went to the University of Michigan at Ann Arbor, where he worked with Clyde H. Coombs and was influenced by Louis Guttman. Later his interest shifted to Item Response Theory and then to the integration of cognitive and mathematical psychology. He made the Katholieke Universiteit of Nijmegen into a leading center of cognitive and mathematical psychology. He co-founded the European Group of Mathematical Psychologists, and the European meetings of the Psychometric Society.

Based on an obituary written by L. Delbeke and H.C. Micko in the electronic journal "MPR-online" (Methods of Psychological Research)

In Memoriam: Eddy Roskam. Delbeke L., Micko H. C. … Rasch Measurement Transactions, 1997, 11:2 p. 565.

Rasch Publications
Rasch Measurement Transactions (free, online) Rasch Measurement research papers (free, online) Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch Applying the Rasch Model 3rd. Ed., Bond & Fox Best Test Design, Wright & Stone
Rating Scale Analysis, Wright & Masters Introduction to Rasch Measurement, E. Smith & R. Smith Introduction to Many-Facet Rasch Measurement, Thomas Eckes Invariant Measurement: Using Rasch Models in the Social, Behavioral, and Health Sciences, George Engelhard, Jr. Statistical Analyses for Language Testers, Rita Green
Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar Journal of Applied Measurement Rasch models for measurement, David Andrich Constructing Measures, Mark Wilson Rasch Analysis in the Human Sciences, Boone, Stave, Yale
in Spanish: Análisis de Rasch para todos, Agustín Tristán Mediciones, Posicionamientos y Diagnósticos Competitivos, Juan Ramón Oreja Rodríguez

To be emailed about new material on
please enter your email address here:

I want to Subscribe: & click below
I want to Unsubscribe: & click below

Please set your SPAM filter to accept emails from welcomes your comments:

Your email address (if you want us to reply):


ForumRasch Measurement Forum to discuss any Rasch-related topic

Go to Top of Page
Go to index of all Rasch Measurement Transactions
AERA members: Join the Rasch Measurement SIG and receive the printed version of RMT
Some back issues of RMT are available as bound volumes
Subscribe to Journal of Applied Measurement

Go to Institute for Objective Measurement Home Page. The Rasch Measurement SIG (AERA) thanks the Institute for Objective Measurement for inviting the publication of Rasch Measurement Transactions on the Institute's website,

Coming Rasch-related Events
June 23 - July 21, 2023, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps),
Aug. 11 - Sept. 8, 2023, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets),


The URL of this page is