Quantitative Aspects of Psychological Assessment
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Reliability of a Difference

 This page calculates the Reliability of a difference between
two scores from two different tests (or scales)

Test 1: Enter Score Mean SD Reliability

Test 2: Enter Score




Show Calculations in results


Calculator Disclaimer: This calculator has been developed for educational purposes, so that psychologists can learn to apply psychometric formula to clinical situations. It has been tested and validated with data from examples used to teach psychometrics on this site. It has not been tested or validated with a wide range of clinical data. Therefore we cannot offer any guarantee that the results of any calculation applied to clinical data is appropriate, accurate or valid.

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