Disability itself needs to be recognized as a category of human diversity.
Respect for difference of persons with disabilities as part of human diversity
Unlike other dimensions of diversity such as race and gender, disability is arguably universal in nature. Anyone can experience disability at some point in their lives.
To be human is to be disabled.
Recognition of disability as a normal and positive feature of human diversity, a move from segregated services, and a focus on universal rights can certainly be considered features of positive social work practice.
However, Thomson and Roulstone add an important caveat to concentrating solely on this diversity approach, noting that the significant structural oppression and power imbalance faced by many disabled people may be overshadowed or downplayed.