1. Capistrano Unified School District, San Juan Capistrano, CA
2. School of Communication Sciences and Disorders, University of Central Florida, Orlando
3. Department of Psychology, University of Central Florida, Orlando
4. Department of Inclusive Education, University of Potsdam, Germany
5. Center for Families and Department of Educational Studies, Purdue University, West Lafayette, IN
6. Centre for Augmentative and Alternative Communication, University of Pretoria, South Africa