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FIPC Linking across Multidimensional Test Forms: Effects of Confounding Difficulty within Dimensions
Peer reviewed
Direct linkKim, Sohee; Cole, Ki Lynn; Mwavita, Mwarumba – International Journal of Testing, 2018
This study investigated the effects of linking potentially multidimensional test forms using the fixed item parameter calibration. Forms had equal or unequal total test difficulty with and without confounding difficulty. The mean square errors and bias of estimated item and ability parameters were compared across the various confounding tests. The…
Descriptors: Test Items, Item Response Theory, Test Format, Difficulty Level
