Research...

1.  I intend to answer the question how is art therapy useful and why should it be used as a more common form of therapy.
2.  Art therapy can be used to treat a wide spectrum of people and should be a more common form of therapy.
3.  Art can be therapeutic for people and is a lot of the time a better way to bond with someone and learn about them rather than sitting them down in a room with someone they don't know and having them try to open up.  It can be used to treat head trauma patients, autistic people, unruly kids and any other issues dealing with the brain. 
4.  I need to find out more about how to get an art therapist.  I need to know how accessible they are so that I can see how widespread they are and if this is becoming a big thing or not.
5.  I think that some arguments could be that art does not affect people, it could not possibly show what's inside someone's head and that art itself is not very important in the modern world.

6.  Emery, Melinda J.  “Art Therapy as an Intervention for Autism.”  Art Therapy: Journal                        of the American Art Therapy Associated.  21.3 (2004): 143-147.  CINAHL.  EPSCO.  Web.  1 Mar. 2011.

Sutherland, Judy, Gwenn Waldman, and Carolyn Collins. "Art Therapy Connection: Encouraging Troubled Youth to Stay in School and Succeed." Art Therapy: Journal of the American Art Therapy Association 27.2 (2010): 69-74. ERIC. EBSCO. Web. 1 Mar. 2011.

Baron, Penny H.  “Fighting Cancer With Images.”  Advances in Art Therapy.  (1989): 148-167.  Print.