Journal
JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH
Volume 60, Issue 7, Pages 1891-1910Publisher
AMER SPEECH-LANGUAGE-HEARING ASSOC
DOI: 10.1044/2017_JSLHR-S-16-0385
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Funding
- Australian Research Council [DP130102545]
- New South Wales Department of Education Grant
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Purpose: The aim was to evaluate the effectiveness of computer-assisted input-based intervention for children with speech sound disorders (SSD). Method: The Sound Start Study was a cluster-randomized controlled trial. Seventy-nine early childhood centers were invited to participate, 45 were recruited, and 1,205 parents and educators of 4-and 5-year-old children returned questionnaires. Children whose parents and educators had concerns about speech were assessed (n = 275); 132 children who were identified with phonological pattern-based errors underwent additional assessment. Children with SSD and no difficulties with receptive language or hearing, typical nonverbal intelligence, and English as their primary language were eligible; 123 were randomized into two groups (intervention n = 65; control n = 58), and 3 withdrew. The intervention group involved Phoneme Factory Sound Sorter software (Wren & Roulstone, 2013) administered by educators over 9 weeks; the control group involved typical classroom practices. Participants were reassessed twice by a speech-language pathologist who was unaware of the initial assessment and intervention conditions. Results: For the primary outcome variable (percentage of consonants correct), the significant mean change from pre-to postintervention for the intervention group (mean change = + 6.15, p <.001) was comparable in magnitude to the significant change for the control group (mean change = + 5.43, p <.001) with a small between-groups effect size for change (Cohen's d = 0.08). Similar results occurred for measures of emergent literacy, phonological processing, participation, and well-being. Conclusion: Computer-assisted input-based intervention administered by educators did not result in greater improvement than typical classroom practices.
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