IRT models for repetitive items

Asked Apr 28 '21 at 21:47

Active Apr 28 '21 at 22:04

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I'm looking for literature about IRT models that fit for tests in which items are presented for each examinee more than once and/or different questions are asked for the same item. For example, in the test the item "2+2" is shown twice, first when the examinee answers what is the equation sum and again when the examinee answers how many even numbers are in the equation. Or, in the test the examinee asked to rate for a picture valance and then asked to rate the picture's arousal (arousal and valence are orthogonal). Thus, the picture (the item) is shown twice but different aspects of the item are measured.

I'd be grateful for any direction and help.

edited Apr 28 '21 at 22:04

asked Apr 28 '21 at 21:47

S H

But those are two different items. – Arya McCarthy Apr 28 '21 at 21:50
I added another, maybe better, example – S H Apr 28 '21 at 22:05
Would bifactor models be a solution to this? – Jeremy Miles Apr 28 '21 at 22:31
1

Sounds like a good idea, I will check it out. Thank you @JeremyMiles! – S H Apr 29 '21 at 08:04
I use the mirt package for bifactor models. – Jeremy Miles Apr 29 '21 at 15:41

IRT models for repetitive items

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