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Single Case Research Design: Deaf Children's Language Outcomes

Single Case Research Design: Deaf Children's Language Outcomes

Status
Active, not recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06722261
Enrollment
8
Registered
2024-12-09
Start date
2025-08-01
Completion date
2026-11-30
Last updated
2025-11-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Language Development

Keywords

Sign Language, Deaf, Intervention

Brief summary

Eight deaf children in kindergarten to 3rd grade classes will be randomly selected for single case research. Their language skills will be monitored and assessed daily. Using a noncurrent multiple baseline design (Single Case Research Design or SCRD), Strategic and Interactive Signing Instruction (SISI) will be administered to two children in each of four classes.

Detailed description

A randomized selection method will be employed to select deaf children to participate in single case research. Two children will be selected from each age group between 5 and 10, making a total of eight students. Their language skills will be closely monitored and evaluated over the course of the year. Following the noncurrent multiple baseline design, in succession across 8 child participants in 4 classes, 2 SCRD participants in a class will begin receiving SISI while other children remain in the baseline for 3 weeks. Brainstorming occurs on Monday and the final sign language composition is shared on Friday. At the end of each day's intervention, child participants will independently narrate their expressed message recorded on videos. A score of 1 (applied correctly), 0.5 (applied but incorrectly), or 0 (omitted) will be given to their inclusion of target sign language skills, which is converted into percentages. If a child receives 100% on their target SL skill for 3 consecutive days (3 data points), Teacher 1 will select a new sign language skill to target. If the child receives 0% or 50% on their target sign language skill, Teacher 1 continues to focus on the same sign language skill.

Interventions

Evidence-based instructional methods, grounded in cognitive, sociocultural, and linguistic theories, are applied to interventions that support sign language development in deaf children.

Sponsors

National Institute on Deafness and Other Communication Disorders (NIDCD)
CollaboratorNIH
The University of Tennessee, Knoxville
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
4 Years to 12 Years
Healthy volunteers
No

Inclusion criteria

* Deaf children in kindergarten to 3rd grade class in a school for the deaf

Exclusion criteria

* Non-deaf children

Design outcomes

Primary

MeasureTime frameDescription
Sign Language SkillsFrom enrollment to the end of treatment 9 academic months later.Deaf children's development of target sign language skills will be documented.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026