Visual support to facilitate appropriate vocal volume within the classroom or therapy setting. Can be paired with therapy activities, posted as a classroom support, reduced in size and used as a desktop aid, etc.
I am unsure of the original publisher of this scale- I have revised it numerous times over the years to best meet our students' needs (ie. images, shading, etc.) It may have originally been cited in the book The Incredible 5-Point Scale. 2003/2012. Kari Dunn Buron and Mitzi Curtis. The Autism Asperger Publishing Company.