Psychometric methodology: proceedings of the 7th European ...
Psychometric Society. European Meeting
... for continuous item responses has the same properties as unidimensional latent trait models for dichotomous items. {cor(t, t)}2 = I var(t) / {I + I var(f)}, (7) Conclusion References Adema, J. J., & Van der Linden, W. J.. 336 G. J. Mellenbergh.