Implementation fidelity of a computer-assisted intervention for children with speech sound disorders

Jane McCormack, Elise Baker, Sarah Masso, Kathryn Crowe, Sharynne McLeod, Yvonne Wren, Sue Roulstone

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Implementation fidelity refers to the degree to which an intervention or programme adheres to its original design. This paper examines implementation fidelity in the Sound Start Study, a clustered randomised controlled trial of computer-assisted support for children with speech sound disorders (SSD). Method: Sixty-three children with SSD in 19 early childhood centres received computer-assisted support (Phoneme Factory Sound Sorter [PFSS]–Australian version). Educators facilitated the delivery of PFSS targeting phonological error patterns identified by a speech-language pathologist. Implementation data were gathered via (1) the computer software, which recorded when and how much intervention was completed over 9 weeks; (2) educators’ records of practice sessions; and (3) scoring of fidelity (intervention procedure, competence and quality of delivery) from videos of intervention sessions. Result: Less than one-third of children received the prescribed number of days of intervention, while approximately one-half participated in the prescribed number of intervention plays. Computer data differed from educators’ data for total number of days and plays in which children participated; the degree of match was lower as data became more specific. Fidelity to intervention procedures, competency and quality of delivery was high. Conclusion: Implementation fidelity may impact intervention outcomes and so needs to be measured in intervention research; however, the way in which it is measured may impact on data.
Original languageEnglish
Pages (from-to)265-276
Number of pages12
JournalInternational Journal of Speech-Language Pathology
Issue number3
Early online dateMar 2017
Publication statusPublished - 04 May 2017

Grant Number

  • DP130102545


Dive into the research topics of 'Implementation fidelity of a computer-assisted intervention for children with speech sound disorders'. Together they form a unique fingerprint.

Cite this