Neurodiversity refers to variation in the human brain regarding sociability, learning, attention, mood and other mental functions in a non-pathological sense. It was coined in 1998 by sociologist Judy Singer, who helped popularize the concept along with journalist Harvey Blume. It emerged as a challenge to prevailing views that certain neurodevelopmental disorders are inherently pathological and instead, adopts the social model of disability, in which societal barriers are the main contributing factor that disables people. This view is especially popular within the autism rights movement. The subsequent neurodiversity paradigm has been controversial among disability advocates, with opponents saying that its conceptualization does not reflect the realities of individuals who have high support needs.