A researcher who is trying to develop a test of musical aptitude is overheard to say, "I want to make sure that the test that I am developing gives similar results time after time." In the language of psychological measurement, this researcher is determined to develop a test that has high

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The researcher's concern for the test to give similar results time after time refers to the consistency of the test scores across different administrations, which is a definition of reliability in psychological measurement.  Reliability refers to consistency of results over time; we can have confidence that what the test shows us will not vary significantly from one administration to the other.

A Researcher Who Is Trying to Develop a Test of Musical