 Two features of this influential statement are worth noting, although we will only discuss the second at length. First, it limits itself to physical impairments; second, it contrasts impairments, individual characteristics or conditions, with disabilities, disadvantages imposed by society on those with impairments. The first feature inaugurates a long tradition in disability activism and scholarship of focusing exclusively on “physical” disability, to the neglect, if not the exclusion, of intellectual, psychiatric, and other “mental” disabilities. Both scholars and activists have long criticized, and sought to broaden, this narrow focus, and even those philosophers who continue to focus on physical disability recognize that adequate models and definitions must include mental disabilities as well. In the rest of this entry, we will not distinguish between the two types of disability except when it is relevant to a particular model or definition; we will note when an account is limited to physical disabilities or criticizes other accounts for that limitation.