Expressive Language Skills

It is the ability to express thoughts, ideas and feelings in spoken language. A child’s verbal skills are based on the number and type of productions based on their developmental and chronological age. Spoken language follows language comprehension (receptive language). A child that has difficulty in verbal communication presents with an expressive language problem. The problem may exist in isolation and/or coexist with a receptive language problem.

Average Age Language Development
6 months Cooing, changes to distinct babbling by introduction of consonants
1 year Beginning of language understanding; one-word utterances
12–18 months Single word use; repertoire of 30-50 words (simple nouns, adjectives, and action words), which cannot as yet be joined in phrases but are used one at a time does not use functors (the, and, can, be) necessary for syntax, but makes good progress in understanding
18–24 months Two-word (telegraphic) phrases ordered according to syntactic rules; vocabulary of 50 to several hundred words; understands propositional rules
2 years New words every day; three or more words in many combinations; functors (function words) begin to appear; many grammatical errors and idiosyncratic expressions; good understanding of language
3 years Full sentences; few errors; vocabulary of around 1,000 words
4 years Close to adult speech competence
Courtesy of Neurobiology of Language