CBT is effective because it has the ability to engage even the most serious of problems, which makes it extremely versatile. Therapists that use cognitive behavioral therapy (CBT) as their primary technique of treating their clients find success with extremely complex diseases such as post-traumatic stress disorder (PTSD), specific phobias, generalized anxiety, social anxiety disorder, depressive disorder, and many more. Cariga describe three models that are paramount to cognitive behavioral therapy. 

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