PSYC 3250 Chapter Notes - Chapter 7: Internal Consistency, Mental Rotation, Generalizability Theory
2 Feb 2016
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Document Summary
It provides information that is useful for providing tests in two important ways: Estimating how much scores might fluctuate as a result of. Estimating the effects of unreliability on the correlation between measurement error tests and criteria of interest. It also provides a measure of the accuracy of test scores. However it does not provide an indication in absolute terms of how accurate test scores really are. Thus, it does not reveal in concrete terms how much variability should be expected on the basis of measurement error. The standard error of measurement is a function of two factors: The sem provides a measure of the variability in test scores expected on the basis of measurement errors. It corresponds to the sd of this distribution. It can be used to form confidence intervals which in turn provide a concrete indication on how accurate the test scores really are.
