Item Response Theory: What It Is and How You Can Use the ...

The model that is specified in the preceding equation is called the multidimensional graded response model. When the responses are binary and there is only one latent factor, this model reduces to the two-parameter model, which can be expressed as y ij D j iC ij p ij DPr.u ij D1/DPr.y ij > j/ A different parameterization for the two-parameter ...

  Model, Response, Response model