According to the Lanterman Act, when must a developmental disability originate?

The Lanterman Developmental Disabilities Services Act specifies that a developmental disability must originate before the individual reaches the age of 18 in order to be eligible for services and support under the act. This cutoff is significant as it aligns with the general understanding that developmental disabilities typically manifest early in life and may affect a person's ability to gain skills across various areas like self-care, communication, and socialization. By establishing this age limit, the act aims to ensure that early intervention and support services can be provided in a timely manner to maximize the potential for individuals affected by such disabilities.

The other age options do not align with the specific criteria set forth by the Lanterman Act, as any onset after age 18 would not qualify for the same level of assistance and support guaranteed under the law.