Jill constructs a test to measure a personality state. the, Ask an Expert

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Jill constructs a test to measure a personality state. The test consists of multiple items which sum up to indicate the degree of the trait that is present. It is important to note that Jill is measuring a state that is quite variable. Which measure of reliability would be LEAST appropriate for assessing the adequacy of her test?

A. Split half

B. Test-retest

C. Cronbach Alpha

D. Kuder-Richardson 20

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