Which of the following best describes "psychologists' notes" as Test Data?

The selection of "psychologists' notes" as Test Data is best described by documentation concerning client statements and behavior. This is because psychologists’ notes typically involve the recording of specific client interactions, observations of their behaviors during sessions, and any relevant statements made by clients. Such notes serve as a critical part of the assessment process, providing insight into the client’s psychological state, responses to interventions, and progress over time.

These notes are distinct from general observations made after sessions, which might lack the detail and focus on client interaction that direct documentation of client statements provides. Additionally, while definitions of tests and secondary sources of feedback from colleagues are important in the overall context of psychological practice, they do not specifically pertain to the direct observations and documentation of client behaviors and statements, which form the basis of what psychologists' notes actually encompass in the realm of Test Data.