Developmental disability in the context of "Untermenschen"

Disability is the experience of any condition that makes it more difficult for a person to do certain activities or have equitable access within a given society. Disabilities may be cognitive, developmental, intellectual, mental, physical, sensory, or a combination of multiple factors. Disabilities can be present from birth or can be acquired during a person's lifetime. Historically, disabilities have only been recognized based on a narrow set of criteria—however, disabilities are not binary and can be present in unique characteristics depending on the individual. A disability may be readily visible, or invisible in nature.

The United Nations Convention on the Rights of Persons with Disabilities defines disability as including:

A birth defect is an abnormal condition that is present at birth, regardless of its cause. Birth defects may result in disabilities that may be physical, intellectual, or developmental. The disabilities can range from mild to severe. Birth defects are divided into two main types: structural disorders in which problems are seen with the shape of a body part and functional disorders in which problems exist with how a body part works. Functional disorders include metabolic and degenerative disorders. Some birth defects include both structural and functional disorders.

Birth defects may result from genetic or chromosomal disorders, exposure to certain medications or chemicals, or certain infections during pregnancy. Risk factors include folate deficiency, drinking alcohol or smoking during pregnancy, poorly controlled diabetes, and a mother over the age of 35 years old. Many birth defects are believed to involve multiple factors. Birth defects may be visible at birth or diagnosed by screening tests. A number of defects can be detected before birth by different prenatal tests.

A group home, congregate living facility, care home (the latter especially in British English and Australian English), adult family home, etc., is a structured and supervised residence model that provides assisted living as well as medical care for those with complex health needs. Traditionally, the model has been used for children or young people who cannot live with their families or afford their own homes, people with chronic disabilities who may be adults or seniors, or people with dementia and related aged illnesses. Typically, there are no more than six residents, and there is at least one trained caregiver there 24 hours a day. In some early "model programs", a house manager, night manager, weekend activity coordinator, and four part-time skill teachers were reported. Originally, the term group home referred to homes of 8 to 16 individuals, which was a state-mandated size during deinstitutionalization. Residential nursing facilities, also included in this article, may be as large as 100 individuals in 2015, which is no longer the case in fields such as intellectual and developmental disabilities. Depending on the severity of the condition requiring one to need to live in a group home, some clients are able to attend day programs and most clients are able to live normal lifestyles.

Challenging behaviour, also known as behaviours which challenge, is defined as "culturally abnormal behaviour(s) of such intensity, frequency or duration that the physical safety of the person or others is placed in serious jeopardy, or behaviour which is likely to seriously limit or deny access to the use of ordinary community facilities". "Ordinarily we would expect the person to have shown the pattern of behaviour that presents such a challenge to services for a considerable period of time. Severely challenging behaviour is not a transient phenomenon."

Challenging behaviour is most often, though not exclusively exhibited by individuals with learning developmental disabilities, individuals with dementia or other mental health needs, such as strokes or acquired brain injuries, individuals with psychosis and by children, although such behaviours can be displayed by any person.