A researcher developed a fatigue scale in an attempt to distinguish depression from fatigue in patients receiving radiation therapy for cancer.The researcher administered the new fatigue scale along with established instruments that measure depression.The fatigue scores were found to be negatively related to the indicators of depression.How should this information be interpreted?

Question

Quizplus · Accepted Answer

The negative relationship between the fatigue scores and indicators of depression indicates that the fatigue scale is measuring a distinct construct from depression, thus establishing divergent validity. Additionally, since the new fatigue scale is being compared to established instruments measuring depression, this establishes convergent validity. Therefore, the information supports divergent validity and construct validity, as indicated in option A.

A Researcher Developed a Fatigue Scale in an Attempt to Distinguish