Butler and Beck Research Support Paragraph
CBT is a treatment for depression and is strengthened by the fact that it has been found to be very effective.
For example, Butler and Beck combined 14 meta-analysis and found that 80% of adults benefited from therapy and it was more successful than drug therapy with a lower relapse rate.
This demonstrates that CBT can be used to improve the quality of life for individuals with depression, the sample size suggests it is high in reliability therefore it can be used as credible evidence that CBT is an effective treatment for depression.