Articulation Norms

Speech Sound Developmental Norms

This graphic represents the average age that 90% of children learn to produce each sound (McLeod & Crowe, 2018). Please note all vowels should be mastered by age three.

McLeod, S. & Crowe, K. (2018). Children’s consonant acquisition in 27 languages: A cross-linguistic review. American Journal of Speech-Language Pathology. doi:10.1044/2018_AJSLP-17-0100. Available from: https://ajslp.pubs.asha.org/article.aspx?articleid=2701897