What additional assessment data would be needed aside from one self-report measure to create a valid hypotheses?

Question

Quizplus · Accepted Answer

To create a valid hypothesis, it is important to gather multiple sources of assessment data. Self-report measures can provide valuable information, but it is also important to consider archival records, reports by significant others, and clinical observation to get a well-rounded understanding of the individual. This additional information can help to confirm or disconfirm hypotheses based on self-report data and provide a more accurate understanding of the individual's strengths and challenges.

What Additional Assessment Data Would Be Needed Aside from One