Measurement bias in an observed variable Y as
a measure of an unobserved variable W exists when
the relationship of Y to W varies among populations
of interest. Bias is often studied by examining
population differences ...
A two-stage procedure for estimating item bias
was examined with six indexes of item bias and
with the Mantel-Haenszel (MH) statistic; the sample
size, the number of biased items, and the magnitude
of the bias were ...
The direct-product model has been suggested as
a procedure for estimating multiplicative effects of
traits and methods in multitrait-multimethod
matrices. Research on the direct-product model is
extended in two ways. ...
To estimate test reliability and to create parallel
tests, test items frequently are matched. Items can
be matched by splitting tests into parallel test halves,
by creating T splits, or by matching a desired test
The effect of response format on diagnostic assessment
of students’ performance on an algebra
test was investigated. Two sets of parallel, open-ended
(OE) items and a set of multiple-choice (MC)
items-which were ...