A study adopting a motor-based, hierarchically structured intervention for remediating nasal fricatives in children with normal velopharyngeal function requires a better experimental design1

Study duration: The total duration of the study was not explicitly reported. The intervention duration was reported as either 11 or 16 weeks, and two follow-ups were made at the 1 and 10 weeks after the last treatment session; however, it is not clear when the baseline probes were collected. Therefore, it was inferred that the study lasted at least 26 or 36 weeks after the two baseline probes were collected. 1Abstracted from: Kjellmer, L., Raud Westberg, L., & Lohmander, A. (2021). Treatment of active nasal fricatives substituting /s/ in young children with normal palatal function using motor-based intervention. International Journal of SpeechLanguage Pathology, 23(6), 593-603. https://doi.org.10.1080/ 17549507.2021.18911285 Source of funding and disclosure of interests: No funding sources were reported. The authors reported no conflicts of interest.