IOM

Institute for Objective Measurement, Inc.
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Welcome to the website of the IOM! We offer you information on a wide variety of measurement programs and services. Please click below on as many selections as you would like.

Research Papers, Notes and Reports (full text)
including "Measurement Essentials", "Popular Measurement"
Rasch Measurement SIG (AERA): Rasch Measurement Transactions
Rasch Software: Freeware and Paid Book Sales Rasch-friendly Journals
Mission Vision (under review) Definition of Measurement Board of Directors
Publications Certification (undex review) Conferences
Workshops
Chapters
Speakers Bureau Directory of Consultants To Reach Us Other Places To Look

New Rasch Measurement Book!!!
Andrich A Course in Rasch Measurement
https://www.springer.com/gp/book/9789811374951#aboutBook

This book applies Rasch measurement theory to the fields of education, psychology, sociology, marketing and health outcomes in order to measure various social constructs. The chief focus is on first principles of both the theory and its applications. Because software is readily available to carry out analyses of real data, numerous small examples are provided in the book. The software used in these examples, and which is helpful in working through the text, is RUMM2030 (Rasch unidimensional models for measurement).

The book's main goals are to equip researchers with the confidence they need in order to be in control of the analysis and interpretation of data, and to make professional rather than primarily statistical decisions mechanically. Because statistical principles are necessarily involved, reviews of the requisite statistics are provided in the Appendix.

The content is based on courses that have been taught both online and in intensive form for over two decades. Although first principles are emphasised, much of the book is based on research conducted by the two authors and their colleagues.


Best Test Design and Rating Scale Analysis are now available for free download!!!
Best Test Design Rating Scale Analysis
Publisher PDF (181MB) Publisher PDF (198MB)
Standard PDF (81MB) Standard PDF (81MB)
Reduced PDF (26MB) Reduced PDF (26MB)



Coming Rasch-related Events
Oct. 11 - Nov. 8, 2019, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
Nov. 3 - Nov. 4, 2019, Sun.-Mon. International Outcome Measurement Conference, Chicago, IL, http://jampress.org/iomc2019.htm
Nov. 15, 2019, Fri. XIII International Workshop "Rasch Models in Business Administration", IUDE of Universidad de La Laguna. Tenerife. Canary Islands. Spain, https://www.ull.es/institutos/instituto-universitario-empresa/
Jan. 30-31, 2020, Thu.-Fri. A Course on Rasch Measurement Theory - Part 1, Sydney, Australia, course flyer
Feb. 3-7, 2020, Mon.-Fri. A Course on Rasch Measurement Theory - Part 2, Sydney, Australia, course flyer
Jan. 24 - Feb. 21, 2020, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
Apr. 14-17, 2020, Tue.-Fri.International Objective Measurement Workshop (IOMW), University of California, Berkeley, https://www.iomw.org/
May 22 - June 19, 2020, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
June 26 - July 24, 2020, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com
June 29 - July 1, 2020, Mon.-Wed. Measurement at the Crossroads 2020, Milan, Italy , https://convegni.unicatt.it/mac-home
July 1 - July 3, 2020, Wed.-Fri. International Measurement Confederation (IMEKO) Joint Symposium, Warsaw, Poland, http://www.imeko-warsaw-2020.org/
Aug. 7 - Sept. 4, 2020, Fri.-Fri. On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com
Oct. 9 - Nov. 6, 2020, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com
June 25 - July 23, 2021, Fri.-Fri. On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com