The DIR method was developed by Stanley Greenspan and Serena Wieder from the school of Psychiatry and Pediatrics at George Washington University Medical School during the 1990s.
Greenspan and Wieder went on to found and run two organisations in 2003 to promote the DIR model. The Interdisciplinary Council on Developmental & Learning Disorders provides educational programs and training materials to professionals. The Floortime Foundation provides outreach and training for parents and other non-professionals.