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.
1-year-olds (12 months to 24 months):
2-year-olds (24 months to 36 months):
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
Andrews JS, Fieldman HM (2011). Language delay. In CD Rudolph et al., eds., Rudolph's Pediatrics, 22nd ed., pp. 331–334. New York: McGraw-Hill.
December 21, 2012
Susan C. Kim, MD - Pediatrics
& Louis Pellegrino, MD - Developmental Pediatrics
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