Monte carlo simulation was used to investigate
score bias and information characteristics of Owen’s
Bayesian adaptive testing strategy and to examine possible
causes of score bias. Factors investigated in three
Multivariate generalizability theory was applied to
the assessment of student achievement in art education.
Twenty-five art students rated the paintings of 60
fourth-grade students with regard to three criteria.
Unidimensional item response theory (IRT) has become
widely used in the analysis and equating of educational
achievement tests. If an IRT model is true,
item responses must be locally independent when the
trait is held ...
Two methods of ’equating’ tests are compared, one
using true scores, the other using equipercentile equating
of observed scores. The theory of equating is discussed.
For the data studied, the two methods yield
The concept of shrinkage, as (1) a statistical phenomenon
of estimator bias, and (2) a reduction in explained
variance resulting from cross-validation, is explored
for statistics based on sample eigenvalues.