“Floor time,” as Dr. Greenspan called his approach, is used in special-education classrooms and clinics around the world, though it remains controversial — as do all early-intervention treatments for autism. An opposing approach that relies on strict behavioral goals and checklists has been more intensively studied and is more widely used in the United States.
Dr. Greenspan encouraged parents, teachers and therapists to get down on the floor with children, even very young ones, and engage them with gestures and words to build warm relationships and expand their world of ideas — many times a day, if necessary.
http://www.nytimes.com/2010/05/05/us/05greenspan.html?hpwStanley I. Greenspan, M.D., is Clinical Professor of Psychiatry and Pediatrics at George Washington University Medical School and Chairman of the Interdisciplinary Council on Developmental and Learning Disorders. The world’s foremost authority on clinical work with infants and young children with developmental and emotional problems, his work has guided parents, professionals and researchers all over the world.
http://stanleygreenspan.com/