test-retest reliability


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test-re·test re·li·a·bil·i·ty

in psychology, the consistency of measurement based on the correlation between test and retest scores for the same subject.
See also: coefficient, reliability.

test-retest reliability

Psychology A measure of the ability of a psychologic testing instrument to yield the same result for a single Pt at 2 different test periods, which are closely spaced so that any variation detected reflects reliability of the instrument rather than changes in the Pt's status. Cf Interrater reliability Stastistics The correlation between the 1st and 2nd test of a number of subjects. See Reliability.

test-retest reliability

The ability of a test to produce consistent results when it is used multiple times under nearly equivalent conditions. A test whose results fluctuate minimally when it is reused is said to have good test-retest reliability.
See also: reliability
References in periodicals archive ?
The second survey was conducted at the office visit before any treatment had been instituted (TP2); the purpose of the second survey was to gauge test-retest reliability.
The test-retest reliability of the short form was somewhat lower compared to total scores, and so use of the short form may come at a modest expense to the stability of measurement.
To analyze test-retest reliability, after a 4-week interval the CRI-Adult was administered again and the participants were instructed to answer items on the problem that they had explained in the first administration of the test.
Test-retest reliability (n=39) and internal consistency (n=109) of the WSE-38 WSE Item Mean SD Mean IV-1 IV-1 IV-2 1.
This simulator trial method has valid test-retest reliability for each of the three SAE scenarios.
In addition, internal consistency coefficients and test-retest reliability values indicate that the scale is a reliable measurement tool.
The HAM-D has demonstrated good internal consistency, good overall test-retest reliability and good inter-rater reliability in patients diagnosed with depression.
Relative test-retest reliability was calculated with the intraclass correlation coefficients (ICC).
Test-retest reliability of the scale was examined with the Spearman's correlation of the two scores obtained one week apart.
The intraclass coefficient correlation (ICC) was used to determine 1-RM and 10-RM test-retest reliability.
In addition, studies on faking typically involve multiple administrations of the task, providing an opportunity to explore test-retest reliability, a fundamental psychometric variable for any measure.
Two types of reliability are usually measured for screening tools: internal consistency and test-retest reliability.