Author Topic: DIF on items level  (Read 632 times)


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DIF on items level
« on: September 04, 2017, 03:12:38 PM »
Please, I would be grateful if anyone could help me in getting the differential item function on items level in multidimensional model please.
I have my items and each with diffrent level ( All are 3 levels; low, high and intermediate). How can I make DIF (as gender for example) but on items level?

Thanks in advance.

Alvin Vista

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Re: DIF on items level
« Reply #1 on: September 05, 2017, 03:23:30 AM »
DIF analysis is mainly concerned with checking if construct-irrelevant factors are causing items to function differentially.
So for example, in a Maths test, the items should not function differentially based on gender.
Levels are relevant to the construct, so I'm not sure this question makes sense.