Developmental Disability
"The term developmental disability means a severe, chronic disability of an individual 5 years of age or older that:
except that such term, when applied to infants and young children means individuals from birth to age 5, inclusive, who have substantial developmental delay or specific congenital or acquired conditions with a high probability of resulting in developmental disabilities if services are not provided."
Developmental Disabilities Assistance Bill of Rights Act of 1994
American Association of University Affiliated Programs
for Persons with Developmental Disabilities http://www.aauap.org/DD.HTM