R.I. Gen. Laws § 40.1-1-8.1: “Developmental disability” defined.

The term “developmental disability” means a severe, chronic disability of a person that:

(1) Is attributable to a mental or physical impairment or combination of mental and physical impairments;

(2) Is manifested before the person attains age twenty-two (22);

(3) Is likely to continue indefinitely;

(4) Results in substantial functional limitations in three (3) or more of the following areas of major life activity:

(i) Self-care;

(ii) Receptive and expressive language;

(iii) Learning;

(iv) Mobility;

(v) Self-direction;

(vi) Capacity for independent living; and

(vii) Economic self-sufficiency; and

(5) Reflects the person’s need for a combination and sequence of special, interdisciplinary, or generic care, treatment, or other services that are of lifelong or extended duration and are individually planned and coordinated.