Friday, September 29, 2:30 - 4:00 p.m.,
N202 LC

CanAm Online Symposium Series in Educational Research Methods

Presenter:Dr. Okan Bulut and Jinnie Shin, Centre for Research in Applied Measurement & Evaluation, University of Alberta

Abstract

Position effects can occur in both paper–pencil tests and computerized assessments when item and response option positions affect item difficulty and examinee performance. Previous studies on position effects often used the Rasch model within the generalized linear mixed modeling framework. This presentation will describe a structural equation modeling (SEM) approach for modeling various types of position effects in educational and psychological assessments. The SEM approach is a flexible method for studying position effects with various IRT models for dichotomously and polytomously scored items. Using simulation and real data studies, the SEM approach will be demonstrated for investigating item position, passage position, testlet position, and response option position effects. In addition, the advantages of the SEM approach over the existing methods will be discussed.

More information

If you have questions about this seminar, contact Professor Mark Davison, mld@umn.edu.
To be notified about future seminars, contact sawye100@umn.edu.


The CanAm Online Symposium, formerly known as the Big Ten Online Symposium, is a series of presentations on advanced measurement and research methods in education. It is sponsored by the Centre for Research in Applied Measurement and Evaluation, Department of Educational Psychology, University of Alberta; the Quantitative Foundations of Education Program, Department of Educational Psychology, University of Iowa; the Quantitative Methods in Education Track, Department of Educational Psychology, University of Minnesota; the Measurement, Statistics, and Evaluation Program, Department of Human Development and Quantitative Methods, University of Maryland; and the Quantitative, Qualitative, and Psychometric Methods Program, Department of Educational Psychology, University of Nebraska-Lincoln. In 2015-16, the Symposium will include four online seminars.