Numerous meta-analyses have shown that CBT yields significantly superior results in the treatment of psychological disorders, most notably, anxiety disorders.
A 2007 meta-analysis stated that the one included study which tested group CBT had produced a similar effect to the other studies using individual CBT.
Traditionally CBT views problem manifestation as brought about by dysfunctional thinking, which is disputed as irrational beliefs and replaced with the use of logical arguments.
There were three combination options (either an antidepressant or CBT added to citalopram), and four switch options (to either a different antidepressant or CBT).