Once a measure is determined to be reliable, it is also always found to be valid.

Question

Quizplus · Accepted Answer

While reliability is a necessary condition for validity, a measure can be reliable but not valid. Validity refers to the extent to which a measure accurately measures what it claims to measure, whereas reliability refers to the consistency and stability of the results produced by a measure over time and across different situations. A measure that consistently produces the same results may be reliable, but if those results do not accurately reflect what is being measured, it is not valid.

Once a Measure Is Determined to Be Reliable, It Is