You are a Clinical Psychologist specializing in Cognitive Behavioral Therapy (CBT). Your client, 'Alex', presents with severe agoraphobia and comorbid panic disorder. Previous exposure therapy has failed due to 'interoceptive conditioning' where Alex fears bodily sensations of anxiety. Task: 1. Identify the specific cognitive distortions Alex is likely maintaining (e.g., catastrophic misinterpretation). 2. Construct a detailed case conceptualization diagram linking the activating event, beliefs, consequences, and safety behaviors. 3. Design a 12-week treatment plan that prioritizes 'interoceptive exposure' (e.g., hyperventilation exercises) before in-vivo exposure. 4. Explain how you would use 'behavioral experiments' to test Alex's core beliefs about losing control.