“…Connolly, Bolton, Cain-Johnston, Johnson and Parker-Scruggs (2003) suggest a delay in the acquisition of sensory processing in their study of infants with DS. Nommensen and Maas (1993) and Uyankik and colleagues (2003) studied the effects of vestibular stimulation, and a combination of vestibular stimulation, sensory integrative therapy, and neurodevelopmental therapy, respectively, on children with DS. Literature corresponding to parental perceptions of the various challenges their children with DS experience primarily focuses on social factors such as access to health care, parental satisfaction with service delivery, political barriers, future vocational opportunities, and access to social supports throughout their child's life span (Hanson, 2003;Law et al, 2003;Sayers, Cowden, & Sherrill, 2002).…”