As a regulated mental health profession, art therapy is employed in many clinical and other settings with diverse populations. It is increasingly recognized as a valid form of therapy. Art therapy can also be found in non-clinical settings, as well as in art studios and in creativity development workshops. Licensing for art therapists can vary from state to state with some recognizing art therapy as a separate license and some licensing under a related field such a professional counseling, mental health counselor. Art therapists must have a master's degree that includes training on the creative process, psychological development, group therapy, and must complete a clinical internship. Art therapists may also pursue additional credentialing through the Art Therapy Credentials Board. Art therapists work with populations of all ages and with a wide variety of disorders and diseases. Art therapists provide services to children, adolescents, and adults, whether as individuals, couples, families, or groups.