The stages of speech and language development are the same for all kids, but the age at which kids develop them can vary a lot.
It's important to know the signs of a speech and language delay, and to seek out an evaluation if any concerns exist. How do you know if there is a delay or if the signs you are seeing are alarming?
Signs fo a language disorder, as identified by the American Speech and Language Association, can include:
Does not smile or interact with others (birth and older)
Does not babble (4-7 months)
Makes only a few sounds or gestures, like pointing (7-12 months)
Does not understand what others say (7 months-2 years)
Says only a few words (12-18 months)
Words are not easily understood (18 months-2 years)
Does not put words together to make sentences (1.5-3 years)
Has trouble playing and talking with other children (2-3 years)
Has trouble with early reading and writing skills* (2.5-3 years)