Barry Grossman, PhD, is a licensed psychologist and author. He specializes in assessment and intervention for individuals with autism spectrum disorders. Dr. Grossman, along with Dr. Aspy, wrote, The Ziggurat Model - a book on designing interventions for students with High Functioning Autism Spectrum Disorder. He and his co-author present on this model nationally. The Ziggurat Model has been adopted at the district-wide and state-wide levels.