How can I assess test reliability in my own sample of test takers?

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Testing instruments sold by Insight Assessment have met the threshold for strong internal consistency reliability (a minimum Alpha of 0.80 for attribute measures and a minimum KR-20 of .72 for skills measures) and are observed to maintain this performance in all samples of adequate variance.  A discussion of instrument validation process and related internal consistency reliability coefficient is provided in the Test Manual for each instrument.  Occasionally a customer may require a calculation of the reliability coefficient for their own sample. If you require this additional analysis, you can request and receive reliability coefficients for your sample if it is of adequate size to support this analysis. Additional fees apply.

How are Insight Assessment test instruments validated?

Quality, Validity and Reliability

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