NOTE: Slides and papers from many presentations are now available!

FRIDAY, April 7, 2006
8:00 a.m. Workshops I
John M. Linacre, William Bonk -- Modeling many-facets data using Facets: An introduction - Regents Room
David Andrich -- Interactive analysis of data using RUMM2020 - Board Room
Cathleen A. Kennedy, Sevan Tutunciyan, Richard Vorp-- GradeMap - University Room

10:00 a.m. Workshops II
John M. Linacre, Mark H. Moulton -- WinSteps applied to messy data - Regents Room
Karen Draney, Hiroyuki Yamada, Ray Adams -- ConQuest - University Room

12:00 p.m. Close of IOMW 2006

1:00 p.m. Tour of UC Berkeley Campus

Winsteps Applied to Messy Data

Organized by  John M. Linacre, University of Sydney, Australia

Led by Mark H. Moulton, Educational Data Systems

The capabilities of Winsteps are demonstrated by means of the analysis of data from a recently-conducted large scale assessment with multiple forms and item types. The analysis includes: keying raw response data to create a score file, calculating item weights and assigning them to items, processingrating scales, investigating dimensionality with principal components analysis of residuals, analyzing item, person and category misfit, equating across forms and administrations using anchor files, creating meaningful subscale measures, interpreting reports, and producing Excel-friendly output files. During this demonstration, issues relating to multi-dimensionality will receive special attention. For more information about Winsteps software, please visit: http://www.winsteps.com/winsteps.htm.

Modeling Many-Facet Data Using Facets: An Introduction

Organized by John M. Linacre, University of Sydney, Australia

Led by William Bonk, University of Colorado at Boulder

The use of the Facets software package as part of a research project is explained. Topics addressed include identifying the types of research questions appropriate for Facets analysis, typically, but not exclusively, those involving judge- or rater-intermediation; planning your experimental design and data collection; setting up your data; constructing your Facets command files; and interpreting Facets output. The workshop demonstrations include datasets from education, psychology, and health care. For more information about Facets software, please visit: http://www.winsteps.com/facets.htm.

Interactive Analysis of Data Using RUMM2020

Organized and led by by David Andrich, Murdoch University

This workshop demonstrates the use features of the RUMM2020 computer software program which can be used for analysing data according to the Rasch Unidimensional Measurement Models. The features include fully interactive studies of checking various fit of items including DIF and principal component analysis of residuals. All statistical output has a graphical counterpart and vice versa which can be used in reports. Then on the basis of any analysis the program enables the user to delete items, delete subsamples or individuals, select random samples, form subtests (testlets or bundles), rescore items, split items by person groups, anchor items, and target the analysis, interactively and rerun the analysis. The perspective that analyses should give the user the opportunity to consider multiple evidence in making any decision, rather than using any statistical criterion mechanically, is emphasised as a basis for the writing of RUMM2020. For handling costs of $US20.00 participants can receive a full version of RUMM2020 which expires in June 2006.For more information about RUMM2020 software, please visit: http://www.rummlab.com/.

GradeMap

Organized and led by Cathy Kennedy, Berkeley Evaluation and Assessment Research (BEAR) Center

In this workshop we will introduce GradeMap model fitting and reporting features through examples. We will show how multidimensional instruments can be linked through common item equating and how student progress can subsequently be mapped and interpreted. Instrument calibration and reporting features designed to assist teachers in interpreting and using diagnostic and formative assessment data will be highlighted. For more information about GradeMap software, please visit: /GradeMap/.

ConQuest

Organized and led by Karen Draney, Hiroyuki Yamada, UC Berkeley; and Ray Adams, University of Melbourne This workshop will cover the basics of using ConQuest for a wide variety of models, including basic Rasch, Rating Scale, and Partial Credit models, more complex LLTM and FACETS style models, multidimensional models, and latent regression.  Menu-driven and command line style versions of the program will be shown, and the interpretation of output files will be discussed.  In addition, Ray Adams will be present, and will demonstrate some of the newest features of his versatile software.For more information about ConQuest software, please visit: http://www.assess.com/Software/ConQuest.htm.