I am working on a project focused on the impact of a manipulation on the effectiveness of a psychotherapy session. We would like to show that our intervention makes a session of CBT therapy for depression more "effective." Our team will be looking at session effectiveness from two angles: the time in the session itself and the impact the session has over the next week. I have been thinking of measuring this with the Session Evaluation Questionnaire (SEQ), but that might be too broad. How might you measure in-session effectiveness? We might operationalized effectiveness as client engagement, client receptivity to the therapist, depth of client's disclosures, openness to practice and implement a specific CBT intervention, etc. I am open to how you might operationalize and measure CBT session effectiveness. We are not interested in assessing working alliance for this project. Thanks.