An understanding of the concept of time can be an important indicator of learning disability, as Kirsten Sharp and colleagues explain

Recent care policies and philosophies for people with a learning disability stress their individuality and human rights (Tyne and O’Brien 1981), especially the right to lead a life of their choice. However, there are situations in which it is important to stress an individual’s learning disability so that he or she receives the necessary support and services. For example, it has been found that people with learning disabilities have greater, and more frequently unmet, health needs than the general population (Department of Health 1995) and may have difficulty in describing their symptoms (Lawrie 1995).