[Rasch] a query on comparability across time

Mike Linacre mike at winsteps.com
Mon Mar 19 17:07:26 AEDT 2018


That's good, Iasonas.

The items are not the same, but perhaps they are similar enough for 
"virtual equating" to be feasible -
https://www.rasch.org/rmt/rmt193a.htm

Mike L.


On 3/19/2018 2:42 PM, Iasonas Lamprianou wrote:
> Good morning Mike (it is morning in this part of the word!).
> I also have access to item-level data (but as I said, it is not possible to use similar items from one year to the next).
> Thank you so much Mike for your email.
> Iasonas



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