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 ?
We translated the original COMBI into Dutch and tested it for validity, diagnostic accuracy, and test-retest reliability.
Therefore, the test-retest reliability of the Turkish version of the PDQ-8 was investigated, and found as very high (ICC=0.97).
(2002) Test-retest reliability of isokinetic muscle strength of the lower extremities in patients with stroke.
Test-retest reliability is used for evaluating the consistency of the scale over time, with values above 0.70 indicating good retest reliability (38).
The VAS is used clinically to determine dizziness intensity but demonstrates inconsistent psychometric properties in terms of test-retest reliability. (2,17,18) When utilized in individuals with confirmed peripheral vestibular disorders, Hall and Herdman found only fair test-retest reliability for the VAS.
Test-retest reliability was assessed by evaluating the consistency of grip strength across three trials for each participant.
Table 4: Intraclass correlation coefficients with 95% confidence interval for test-retest reliability of subjects with and without back pain on the SEBT.
The test-retest reliability was calculated using the intraclass correlation coefficient (ICC) (3,1) [12].
In PD, several studies showed that GDS has good psychometric properties, a high internal consistency (Cronbach's alpha = 0.92) [21], an excellent test-retest reliability (intraclass correlation coefficient = 0.89 [95% CI 0.83-0.93]), and a minimal detectable change of 5.4 points [22].
Here we aimed to determine the test-retest reliability of M1 homeostatic plasticity, induced and assessed using noninvasive brain stimulation, at intervals of 48 hours, 7 days, and 2 weeks.
In this study, we assessed the test-retest reliability of the anaesthetists' performances on a computer screen based SAE simulator by determining if different observations assessing the same SAE scenario would have agreement on the rating of the anaesthetist's performances.