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Updated: May 28, 2026

Ultrasound Images of the Tongue: A Tutorial for Assessment and Remediation of Speech Sound Errors
Published on: January 3, 2017
Tracking speech sound acquisition
1Department of Rehabilitation Sciences, Louisiana State University Health Sciences Center, Shreveport, LA 71103-4601, USA. tpowel@lsuhsc.edu
Abstract:
This article describes a procedure to aid in the clinical appraisal of child speech. The approach, based on the work by Dinnsen, Chin, Elbert, and Powell (1990; Some constraints on functionally disordered phonologies: Phonetic inventories and phonotactics. Journal of Speech and Hearing Research, 33, 28-37), uses a railway idiom to track gains in the complexity of speech sound production. A clinical case study is reviewed to illustrate application of the procedure. The procedure is intended to facilitate application of an evidence-based procedure to the clinical management of developmental speech sound disorders.
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