What is the evidence log in CBT?

• A. A daily mood diary.
• B. A tool used to document evidence supporting or contradicting a client's beliefs.
• C. A log of therapist's interventions.
• D. A record of attendance.

Answer: (B)

In CBT, the evidence log is used to document evidence supporting or contradicting a client's beliefs. It turns thoughts into testable hypotheses by recording the situation, the belief, the mood, the evidence that would support the belief, the evidence against it, and a revised, more balanced belief. This makes beliefs explicit and reviewable, helping clients see where their automatic thoughts may not line up with real data and guiding cognitive restructuring as well as planning helpful behavioral experiments.

A daily mood diary, by contrast, centers on mood ratings and triggers, not on systematically weighing supporting versus contradicting evidence for specific beliefs. A log of therapist interventions tracks what the therapist does, and a record of attendance tracks attendance—topics unrelated to evaluating the truth of a belief.