Complex sentence: Numerous meta-analyses have shown that CBT yields significant results of effectiveness in treating psychological disorders, most notably, anxiety disorders, however CBT also plays a positive role in treating depression, eating disorders, substance abuse disorders, and obsessive-compulsive disorder.
Split into simpler sentences: Numerous meta-analyses have shown that CBT yields significantly superior results in the treatment of psychological disorders, most notably, anxiety disorders. However, CBT also plays a positive role in treating depression, eating disorders, substance abuse disorders, and obsessive-compulsive disorder.