JCPSLP Vol 23 Issue 2 2021

McKinnon, D. H., McLeod, S., & Reilly, S. (2007). The prevalence of stuttering, voice, and speech-sound disorders in primary school students in Australia. Language, speech, and hearing services in schools , 38 (1), 5–15. doi:10.1044/0161-1461(2007/002) McLeod, S., & Baker, E. (2017). Children’s speech: An evidence-based approach to assessment and intervention . Pearson. Morgan, L., & Wren, Y. E. (2018). A systematic review of the literature on early vocalizations and babbling patterns in young children. Communication Disorders Quarterly , 40 (1), 3–14. doi:10.1177/1525740118760215 Murray, E., McCabe, P., & Ballard, K. J. (2014). A systematic review of treatment outcomes for children with childhood apraxia of speech. American Journal of Speech- Language Pathology , 23 (3), 486–504. doi:10.1044/2014_ AJSLP-13-0035 Oller, D. K., Eilers, R. E., & Basinger, D. (2001). Intuitive identification of infant vocal sounds by parents. Developmental Science, 4 (1), 49–60. Oller, D. K., Eilers, R. E., Neal, A. R., & Schwartz, H. K. (1999). Precursors to speech in infancy: The prediction of speech and language disorders. Journal of Communication Disorders , 32 (4), 223–245. Overby, M., Belardi, K., & Schreiber, J. (2020). A retrospective video analysis of canonical babbling and volubility in infants later diagnosed with childhood apraxia of speech. Clinical Linguistics & Phonetics , 3 4 (7), 634–651. doi:10.1080/02699206.2019.1683231

Overby, M., & Caspari, S. (2015). Volubility, consonant, and syllable characteristics in infants and toddlers later diagnosed with childhood apraxia of speech: A pilot study. Journal of Communication Disorders , 55 (Jun), 44–62. Pring, T. (2005). Research methods in communication disorders . Whurr. Reilly, S., Wake, M., Bavin, E. L., Prior, M., Williams, J., Bretherton, L., Eadie, P., Barrett, Y., & Ukoumunne, O. C. (2007). Predicting language at 2 years of age: A prospective community study. Pediatrics , 120 (6), e1441-e1449. https:// doi.org/10.1542/peds.2007-0045 Stoel-Gammon, C. (1989). Prespeech and early speech development of two late talkers. First Language , 9 , 207–224. Dr Chantelle Highman is a speech pathologist, lecturer and researcher at Curtin University, Perth, Western Australia. Chloe Harper is a speech pathologist working in early intervention at a community disability provider and who conducted aspects of the research as a student assignment. Dr Neville Hennessey is a senior lecturer at Curtin University. A/Prof. Suze Leitao is a clinician, researcher and the Director of Graduate Research in the Curtin School of Allied Health.

Correspondence to: Dr Chantelle Highman Curtin School of Allied Health, Curtin University, Perth, Western Australia GPO Box U1987, Perth, Western Australia, 6845 email: c.highman@curtin.edu.au

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JCPSLP Volume 23, Number 2 2021

Journal of Clinical Practice in Speech-Language Pathology