| Purpose: This study examines how dose frequency affects motor-based articulation remediation and generalization in school-aged children with speech sound disorders(SSD).Background: Children with SSD are treated by nearly 90% of school based SpeechLanguage Pathologists (SLPs). SLPs are required by the Individuals with Disabilities Education Act (IDEA) to provide intervention in an environment that is the least restrictive to the student. Currently, little evidence is provided for SLPs making service delivery decisions for children on their caseload, leading to a reduction of individualization for various severities and impairments. SATPAC is a motor-based approach SSD intervention which implements nonwords to change an inaccurate motor plan producing errored sounds. This approach utilizes the principles of motor learning to create an optimal environment for children to relearn an accurate motor plan. Methods: Using a multiple-baseline, single-subjects experimental design, threeEnglish-speaking children with SSD (6;1-8;11) were split into two dose frequency conditions (2 children in one condition, 1 child in the second condition) target ingdentalized /s/ error patterns. Children received between 16 and 18 hours of treatment provided twice per week (2x/week) for 30 minutes per session or three times per week(3x/week) for 20 minutes per session. Results: All three participants demonstrated large effect sizes with a Tau-U value greater than 0.8 with statistically significant (p<0.01) improvement in their /s/ productionaccuracy on the 60-word /s/ probe between initial assessment and final assessment.Conclusion: Intervention provided twice a week for 30 minutes and three times a week for 20 minutes resulted in similar intervention outcomes suggesting that both intervention session schedules can elicit change in children’s speech production. The higher dosage achieved with the participant receiving more frequent but shorter sessions suggests that shorter sessions may be more effective.Keywords: Dentalized, Intervention intensity, Lisp, Speech Sound Disorders |