Both qualitative and quantitative studies have been completed and both have provided evidence to support music therapy in the use of bereavement treatment. One study that evaluated a number of treatment approaches found that only music therapy had significant positive outcomes where the others showed little improvement in participants (Rosner,Kruse & Hagl, 2010). Furthermore, a pilot study, which consisted of an experimental and control group, examined the effects of music therapy on mood and behaviors in the home and school communities. It was found that there was a significant change in grief symptoms and behaviors with the experimental group in the home, but conversely found that there was no significant change in the experimental group in the school community, despite the fact that mean scores on the Depression Self-Rating Index and the Behavior Rating Index decreased (Hilliard, 2001). Yet another study completed by Russel Hilliard (2007), looked at the effects of Orff-based music therapy and social work groups on childhood grief symptoms and behaviors. Using a control group that consisted of wait-listed clients, and employing the Behavior Rating Index for Children and the bereavement Group Questionnaire for Parents and Guardians as measurement tools, it was found that children who were in the music therapy group showed significant improvement in grief symptoms and also showed some improvement in behaviors compared to the control group, whereas the social work group also showed significant improvement in both grief and behaviors compared to the control group. The study concludes with support for music therapy as a medium from bereavement groups for children (Hilliard, 2007).