Speech and language development milestones relate to receptive language (the ability to understand words and sounds) and expressive language (the ability to use speech and gestures to communicate meaning).
Most 1-year-olds begin to understand the meanings of words. Their receptive language grows from understanding names of people and objects, to being able to follow simple requests sometime between ages 1 and 2. Expressive language advances from primarily using gestures and babbling at age 1, to using words, simple phrases, and some early sentence structures between ages 2 and 3.
| Age | Receptive language | Expressive language |
|---|---|---|
|
1-year-olds (12 months to 24 months): |
|
|
|
2-year-olds (24 months to 36 months): |
|
|
Citations
Dixon SD (2006). Two years: Language leaps. In SD Dixon, MT Stein, eds., Encounters with Children: Pediatric Behavior and Development, 4th ed., pp. 383–409. Philadelphia: Mosby Elsevier.
Shonkoff JP (2003). Language delay: Late talking to communication disorder. In CD Rudolph, AM Rudolph, eds., Rudolph's Pediatrics, 21st ed., pp. 441–444. New York: McGraw-Hill.
WebMD Medical Reference from Healthwise