Which is true about test-retest reliability?
A) Is not useful in situations where the variable is dynamic and changing
B) Reflects a measure of instrument accuracy
C) Requires at least 3 weeks between test and retest administration
D) Requires a correlation between the two administrations of .30 or greater

Question

Quizplus · Accepted Answer

Test-retest reliability assumes the factor to be measured remains the same at the two testing times and that any change in the value or score is a consequence of random error.
The accuracy of an instrument is not measured by test-retest reliability.
A much higher correlation would be required to consider good test-retest reliability.
The amount of time between measurements is variable and depends on what kind of measure it is.

Which Is True About Test-Retest Reliability