Chapter 5 - Reliability Flashcards
alternate-forms reliability
An estimate of the extent to which item sampling and other errors have affected scores on two versions of the same test; contrast with parallel-forms reliability.
assumption of local independence (in IRT)
a
assumption of monotonicity (in IRT)
a
assumption of unidimensionality (in IRT)
a
average proportional distance (APD)
A measure used to evaluate the internal consistency of a test that focuses on the degree of difference that exists between item scores.
classical test theory
Also known as true score theory and the true score model, a system of assumptions about measurement that includes the notion that a test score (and even a response to an individual item) is composed of a relatively stable component that actually is what the test or individual item is designed to measure, as well as a component that is error.
coefficient alpha
Also referred to as Cronbach’s alpha and alpha, a statistic widely employed in test construction and used to assist in deriving an estimate of reliability, more technically, it is equal to the mean of all split-half reliability.
coefficient of equivalence
An estimate of parallel forms reliability or alternate-forms reliability.
coefficient of generalizability
In generalizability theory, an index of the influence that particular facets have on a test score.
coefficient of inter-scorer reliability
a
coefficient of stability
a
confidence interval
a
content sampling
a
criterion-referenced test
a
decision study
a
dichotomous test item
a
discrimination
a
domain sampling theory
a
dynamic characteristic
a
error variance
a
estimate of inter-item consistency
a
facet
a
generalizability study
a
generalizability theory
a
heterogeneity
a
homogeneity
a
