“Why are reliability and validity such important principles in psychological measurement?”. Make sure you clearly define both terms in your answer. In answering this question, consider a scenario where an important decision is made about a person on the basis of a psychological test. Why would reliability and validity be important in this situation, and what might be the consequence of using a test with poor psychometric properties?
Reliability and Validity Establishing reliability and validity in research means ensuring the data is reliable, repeatable, and accurate. Validity and dependability must be shown to sustain the integrity and efficacy of measurement equipment. When assessing a measurement procedure, psychologists consider validity and reliability. A measuring method’s reliability is evaluated over...