Invariance of trait scales across changing samples
of items and examinees is a central tenet of item response
theory (IRT). However, scales defined by most
IRT models are truly invariant with respect to certain
linear ...
Multidimensional item response theory (MIRT) computerized
adaptive testing, building on recent work by
Segall (1996), is applied in a licensing/certification
context. An example of a medical licensure test is used
to ...
For the measurement of multiple traits, this paper proposes
assembling tests based on the targets for the (asymptotic)
variance functions of the estimators of each of
the traits. A linear programming model is presented ...
A multidimensionality-based differential item functioning
(DIF) analysis paradigm is presented that unifies
the substantive and statistical DIF analysis approaches by
linking both to a theoretically sound and ...
According to the weak local independence approach
to defining dimensionality, the fundamental quantities
for determining a test’s dimensional structure are the covariances
of item-pair responses conditioned on examinee
trait ...
