Before what age must a condition manifest to be considered a developmental disability?

Before what age must a condition manifest to be considered a developmental disability?

• A. Before age 18
• B. Before age 5
• C. Before age 21
• D. Before age 16

Answer: (A)

Developmental disabilities are lifelong conditions that begin during childhood, affecting multiple areas of functioning. The defining timing is that the condition must manifest before age 18. This early onset distinguishes developmental disabilities from conditions that start in adulthood. So the option that specifies before age 18 is the standard criterion. (Conditions that first appear after 18 aren’t classified as developmental disabilities under this definition.)

Developmental disabilities are lifelong conditions that begin during childhood, affecting multiple areas of functioning. The defining timing is that the condition must manifest before age 18. This early onset distinguishes developmental disabilities from conditions that start in adulthood. So the option that specifies before age 18 is the standard criterion. (Conditions that first appear after 18 aren’t classified as developmental disabilities under this definition.)