Reliability of measurement is an important consideration in any study, and there are several types which can be considered. a high level of test-retest reliability ensures that there is consistencies over time.
The results should be consistent throughout time when researchers measure a concept that they believe to be constant over time. The degree to which this is actually the case is test-retest. For instance, intelligence is typically believed to be constant across time. An clever person today will still be intelligent next week. This implies that any reliable test of IQ should give this person roughly the same results as it does today next week. It is obvious that a measure that consistently yields scores that are highly erratic cannot be a very useful indicator of a construct that is meant to be reliable.
To learn more about test retest click here:
https://brainly.com/question/28204816
#SPJ4