[Rasch] Logit to positive integer transformation

Bond, Trevor trevor.bond at jcu.edu.au
Tue Oct 31 15:02:37 AEDT 2017

Dear Tim
Rescaling is included in the Winsteps manual, and covered in B&F2 or 3, Chapter 11

Prof Trevor G BOND

On 31 Oct 2017, at 2:48 pm, Tim Mcnamara <tfmcna at unimelb.edu.au<mailto:tfmcna at unimelb.edu.au>> wrote:

Hi all, a simple question, but I can’t seem to find a discussion of it – how do we convert logit measures into more accessible scores, as positive integers, ideally on a simple numerical scale?  What are some examples of Rasch-based scales which have done this, especially in the language/literacy area? (I can think of TORCH and Lexiles, but some more recent ones would be good). I need to write some text about it for a lay audience, so the explanation can’t be too technical.

Tim McNamara FAHA FAcSS
Redmond Barry Distinguished Professor, School of Languages and Linguistics, The University of Melbourne
President, American Association for Applied Linguistics (AAAL)

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