Now your child’s a preschooler, you can expect longer, more complex conversations about all sorts of things. His vocabulary will continue to grow, and he might well show that he understands the basic rules of grammar. And you can look forward to some entertaining stories too.
Here are some of the things your preschooler might do as his language and communication skills develop between the ages of three and four years:
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Fenson, L., Marchman, V. A., Thal, D. J., Dale, P. S., Reznick, J. S., & Bates, E. (2007). MacArthur-Bates Communicative Development Inventories (2nd ed.). Baltimore: Paul H. Brookes.
Flipsen, P., Jr. (2006). Measuring the intelligibility of conversational speech in children. Clinical Linguistics and Phonetics. 20, 4, 202-312.
Owens, R. E. (2001). Language development: An introduction (5th ed.). Boston: Allyn & Bacon.
McLaughlin, S. (2006). Introduction to language development (2nd ed.). San Diego: Singular.
Roth, R. P., Speece, D. L., & Cooper, D. H. (2002). A longitudinal analysis of the connection between oral language and early reading. Journal of Educational Research, 95(5), 259-272.