A Mayeur, F Magnan, S Mathieu, P Rubens, B Sperelakis Beedham, C Sonigo, J Steffann, N Frydman
What importance do donors and recipients attribute to the nuclear DNA-related genetic heritage of oocyte donation?
Human reproduction (Oxford, England)
differential item functioning dif standard analysis every testing company research demonstrated dif result test items measure different ability composites groups examined dif exhibit distinct underlying ability distributions composite abilities article examine dif twodimensional multidimensional item response theory mirt perspective begin delving compensatory mirt model illustrating items composites measure graphically represented additionally discuss estimated item parameters vary based underlying latent ability distributions examinees analytical research highlighting consequences ignoring dimensionally applying unidimensional irt models twodimensional latent space mapped onto unidimensional reviewed next investigate three different approaches understanding dif mirt standpoint 1 analytically uniform nonuniform dif two groups interest different twodimensional ability distributions unidimensional model estimated 2 accounting complete latent ability space emphasize importance considering entire latent ability space using dif conditional approaches leads mitigation dif effects 3 scenariobased dif even underlying twodimensional distributions identical two groups differing problemsolving approaches still lead dif modern software programs facilitate routine dif procedures comparing response data two identified groups interest real challenge identify dif could occur flagged items thus closing challenge present four items appendix standardized test invite readers identify group favored dif analysis