Answers may include: - Definition of the chosen disorder(s) and a brief overview of the two treatment modalities. - Application of relevant research studies comparing biological treatments (e.g., SSRIs, Benzodiazepines) and psychological treatments (e.g., Cognitive Behavioural Therapy, Interpersonal Therapy). - Relevant research may include, but is not limited to: Elkin et al. (1989) on the NIMH Treatment of Depression Collaborative Research Program; TADS (2004) regarding the Treatment for Adolescents with Depression Study; Hollon et al. (2005) on relapse rates. - Evaluation of the strengths and limitations of each approach, such as time taken for improvement, reduction of symptoms versus addressing root causes, side effects, and relapse rates after treatment discontinuation. **A — Focus on the Question** up to 2 marks - Identify the core debate regarding the efficacy of physiological versus cognitive/behavioural interventions. - Explain the complexities involved in measuring 'effectiveness' (e.g., symptom reduction vs. long-term recovery). **B — Knowledge and Understanding** up to 6 marks - Demonstrate accurate knowledge of biological mechanisms (e.g., the serotonin hypothesis, neurotransmission) and psychological principles (e.g., cognitive restructuring, schema theory). - Use appropriate psychological terminology correctly (e.g., etiology, double-blind trial, relapse, biopsychosocial). **C — Use of Research to Support Answer** up to 6 marks - Provide detailed descriptions of at least two key studies comparing the treatments. - Explicitly link the findings of these studies to the question of 'relative effectiveness.' - Discuss the methodological strengths and limitations of the cited research (e.g., use of placebos, attrition rates). **D — Critical Thinking** up to 6 marks - Evaluate the limitations of the medical model versus the psychological model. - Discuss the synergy of eclectic approaches (combining treatments) and why individual differences might make one treatment more effective than the other. - Consider the ethical implications of drug therapy (e.g., side effects, dependency) versus therapy (e.g., power dynamics, duration). **E — Clarity and Organisation** up to 2 marks - Present a structured response with a clear introduction, body paragraphs, and a reasoned conclusion. - Ensure a logical progression of the argument that leads to a balanced evaluation. When evaluating 'effectiveness,' ensure you distinguish between short-term symptom relief and long-term prevention of relapse.