[Rasch] IOMW and Standard Dataset 4

Mike Linacre mike at winsteps.com
Thu Apr 7 19:45:20 AEST 2016

Folks, IOMW in Washington DC was a great success. Thank you Mark 
Moulton, Brent Duckor and their brilliant supporting cast.

During one of my presentations, I asked for everyone's assistance with 
providing estimates for a rating-scale dataset, Standard Dataset 4. This 
is now online at www.rasch.org/sd4.htm . If you have a different 
estimation method for the Andrich rating-scale model, or different 
software, or different results, please paste your results into the 
"comments" mailform at the bottom of that webpage and send them, or 
email them directly to me. The purpose is to provide benchmark values so 
that our colleagues can verify that their software is functioning 
correctly, and also help instructors explain the practical differences 
between estimation methods.

Mike Linacre
mike at winsteps.com

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