A didactic discussion of a procedure for interval estimation of change in scale reliability due to revision is provided, which is developed within the framework of covariance structure modeling. The method yields ranges of plausible values for the population gain or loss in reliability of unidimensional composites, which results from deletion or…

Proposes a test for change in composite reliability as a result of scale revision or modification. The test, which is useful for examining whether a revision changes the population reliability of a scale undergoing development, is illustrated with two examples. (SLD)