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The goal of this clinical trial is to test a phonics-based literacy program for children with limited or no speech who use augmentative and alternative communication.
More specifically, this study aims to:
Participants will be asked to complete 100 lessons using the app. The lessons will be phonics-based for the intervention group. The comparison group with use the same app and complete 100 lessons, but will only complete lessons in sight word (no phonics).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| ALL Phonics Instruction | Experimental | Lessons for the treatment group will be 30-min. long using the ALL app with a known service provider. Lessons will include systematic instruction with four subskills per session (e.g., letter-sounds, sound blending, typing, and sight words). The words and subskills with rotate based on the data collected and the machine learning within the technology. The child will complete 100 lessons. The systematic instruction with subksills (e.g., sound blending, decoding) includes 10 trials per word and an instructional sequence that introduces the skill, two models, six trials of guided practice, and two trials of independent practice with corrective feedback. |
|
| ALL Sight Word | Active Comparator | Lessons for the comparison group will be 30-min. long using the ALL app with a known service provider. Lessons will include systematic instruction with sight words. The child will also complete 100 lessons.No phonics instruction will be provided to this group through the ALL app. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| ALL Phonics Instruction | Behavioral | The Accessible Literacy Learning (ALL) App is available in the app store and created by TobiiDynavox (an AAC device company). The ALL app is evidence informed and includes pre-made lessons in early phonics/phonological skills including: letter-sounds, sound blending, decoding, phoneme segmentation, sight words, and encoding. The materials made in the app are adapted and created for children with minimal or no speech. |
| Measure | Description | Time Frame |
|---|---|---|
| Change from Baseline Scores on the Early Literacy Assessment | We will examine the impact of literacy lessons delivered with the ALL technology on the change in scores on the Early Literacy Assessment (ELA) -specifically change in scores in the areas of letter-sounds, sound blending, phoneme segmentation, decoding, irregular sight words, and encoding. | Through study completion, an average of 8 months |
| Measure | Description | Time Frame |
|---|---|---|
| Data from the Feasibility Adoption Acceptability Questionnaire (FAAQ) | To measure the perceptions of implementation variables the Feasibility Adoption Acceptability Questionnaire (FAAQ) will be completed at six timepoints throughout the study. Likert-scale questions (Scale of 1-5) across 10 questions, as well as 2 open responses. | Through study completion, an average of 8 months |
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Inclusion Criteria:
Students with CCN can participate if they meet the following criteria:
School support personnel (e.g., teachers, speech-pathologists, paraprofessionals) can participate if they meet the following criteria, per self-report:
Exclusion Criteria:
Students cannot participate if they:
Support personnel cannot participate if they:
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| Name | Affiliation | Role |
|---|---|---|
| Jessica Caron, Ph.D. | The Pennsylvania State University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| The Pennsylvania State University | State College | Pennsylvania | 16803 | United States |
Demographic information, as well as raw scores on literacy assessment measures.
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After analysis of results (approximately November 2025)
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| ID | Term |
|---|---|
| D000067010 | Literacy |
| ID | Term |
|---|---|
| D003142 | Communication |
| D001519 | Behavior |
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|
| ALL Sight Word Instruction | Behavioral | The Accessible Literacy Learning (ALL) App is available in the app store and created by TobiiDynavox (an AAC device company). The ALL app is evidence informed and includes pre-made lessons in early phonics/phonological skills including: letter-sounds, sound blending, decoding, phoneme segmentation, sight words, and encoding. The materials made in the app are adapted and created for children with minimal or no speech. This group will only use the sight word lessons, as well as the library for sight word books. No phonics instruction will be provided through the app. |
|
| Treatment and Acceptability Rating Form - Revised | Pre-post interviews using the Treatment and Acceptability Rating Form-Revised (TARF-R) [20] will examine which components of the ALL technology are perceived as helpful or hindering to progress as well as factors that may support high implementation fidelity. | Through study completion, an average of 8 months |