AO3: Evidence for effectiveness: Strength, March et al. - CBT just effective as antidepressants, 81%, but even better combined, 86%. Suitable for diverse clients: Limitation, Sturne - may not be suitable for ppl. with learning disabilities or severe depression. Counterpoint: Strength, Lewis and Lewis - drugs and CBT same effectiveness for severe depression, Taylor et al. - ok for learning disabilities. Relapse rates: Limitation, benefits are short term, Ali et al. - 42% relapsed after 6 months, 53% within a year, may need repeating. Client preference: CBT is effective, but some clients might prefer to take meds or explore past.