Passage 1
A variety of methods can be used to assist people who are suffering from mental disorders. One such
therapy is insight-oriented therapy. Proponents of this approach believe that success can be achieved
only if the client gains insight into the experiences that led up to his or her problem. Another type of
therapy is behavior therapy. This approach attempts to make changes by using scientifically tested
principles of operant and classical conditioning. Still another type of therapy is group therapy. This
type of therapy involves a therapist and several clients who are all troubled by similar problems.

What is the supporting details ?