If a measurement tool has high reliability, it must have high validity as well.

Question

Quizplus · Accepted Answer

Reliability and validity are two different aspects of measurement. Reliability refers to the consistency or stability of a measurement tool over time or across different observers, while validity refers to the accuracy or truthfulness of a measurement tool in measuring what it is intended to measure. A measurement tool can have high reliability but low validity, meaning that it consistently measures a certain variable but does not actually measure what it is intended to measure. Therefore, high reliability does not necessarily guarantee high validity.

If a Measurement Tool Has High Reliability, It Must Have