The reason that "onset prior to age 18" is part of the DSM-5 diagnostic criteria for intellectual disability is that
A) the diagnosis indicates that the individual was affected during the developmental period.
B) the diagnosis is not intended to include individuals who have suffered any form of brain damage.
C) the diagnosis has legal implications for children.
D) this diagnosis is reserved for children; other diagnostic terms are applied once the mentally retarded individual reaches the age of 18.

Question

Quizplus · Accepted Answer

The reason onset prior to age 18 is part of the DSM-5 diagnostic criteria for intellectual disability is that it indicates the individual was affected during the developmental period. This is important because intellectual disability is a developmental disorder, and it differentiates it from acquired intellectual disability caused by brain damage or injury later in life.

The Reason That "Onset Prior to Age 18" Is Part