Elicit: Impact of Evidence-Based Language Interventions on Teenagers
Impact of Evidence-Based Language Interventions on Teenagers
What is the impact of evidence-based language interventions on academic performance and social communication skills in teenagers with language disorders?
Language interventions yield substantial improvements in both academic performance and social communication among teenagers with language disorders, with particularly strong effects in word-finding (d = 2.5) and social abilities (d = 1.36).
Abstract
Evidence-based language interventions improve both academic performance and social communication among teenagers with language disorders. Semantic approaches that target word-finding report large gains (d = 2.5), while direct one‐to‐one speech therapy and explicit vocabulary training yield medium effect sizes (d = 1.06 and d = 1.07, respectively). Classroom-based narrative and reading comprehension programs also show positive outcomes, with narrative skills improving (d = 0.296) and reading interventions noted for producing large qualitative effects.
Studies assessing social communication report a 10.5–point gain on standardized measures over 8 weeks and an improvement in social abilities with an effect size of d = 1.36. Interventions delivered via individual sessions, group classroom settings, technology-enhanced formats, and teacher-mediated strategies demonstrate that tailoring the method to target specific language and communication skills can enhance both academic and social outcomes for teenagers with language disorders.
Methods
We analyzed 25 sources from an initial pool of 500, using 8 screening criteria. Each paper was reviewed for 6 key aspects that mattered most to the research question.
Data extraction
We asked a large language model to extract each data column below from each paper.
Study Design Type:
- Possible types include:
- Randomized Controlled Trial (RCT)
- Controlled Trial
- Quasi-experimental study
- Intervention study
Randomization Details:
If the study is an RCT, extract specific randomization information:
- Unit of randomization (e.g., individual students, classrooms, schools)
- Method of randomization (e.g., computer-generated sequence, block randomization)
Participant Demographics:
Extract the following participant details:
- Total number of participants
- Age range/mean age
- Gender distribution
- Specific language disorder characteristics
Intervention Characteristics:
Describe the specific language intervention:
- Intervention name/type
- Delivery method (e.g., group, individual, classroom-based)
- Who delivered the intervention (e.g., teaching assistants, speech therapists)
Primary Outcome Measures:
List all primary outcome measures related to:
- Academic performance
- Social communication skills
Key Intervention Outcomes:
Extract statistically significant findings related to:
- Changes in academic performance
- Improvements in social communication
Results
Characteristics of Included Studies
| Study Design | Intervention Type | Population Characteristics | Primary Outcomes | Full text retrieved |
|---|---|---|---|---|
| Quasi-experimental study | YouTube vlogging program | 50 teenagers (13-18 years) with speech and language impairments | Communication skills improvement | Yes |
| Randomized controlled trial | Narrative, vocabulary, and combined interventions | 358 students (mean age 12;8 years) with language disorder | Narrative and vocabulary skills | Yes |
Intervention Categories:
- Direct language interventions (e.g., semantic, phonological, vocabulary)
- Technology-based interventions (e.g., virtual reality, interactive technologies)
- Teacher training programs
- Social communication interventions
- Academic-focused interventions (e.g., reading comprehension, expository discourse)
Effects of Language Interventions
Academic Performance Outcomes
| Intervention Approach | Academic Domain | Effect Size | Implementation Context |
|---|---|---|---|
| Semantic intervention | Word-finding | d = 2.5 | Individual sessions |
| Direct 1:1 Speech and Language Therapy | Various language targets | d = 1.06 | Specialist school setting |
| Narrative intervention | Narrative skills | d = 0.296 | Classroom-based |
Social Communication Outcomes
| Communication Skills Targeted | Measurement Approach | Reported Outcomes | Duration |
|---|---|---|---|
| General communication skills | Pre-post intervention assessment | Significant improvement (mean difference 10.5 points) | 8 weeks |
| Social abilities | Nonoverlap of all pairs test | Significant improvement (d = 1.36) | 9 weeks |
Implementation Factors
Delivery Methods
The studies included a variety of delivery methods for language interventions:
- Individual sessions: One-on-one interventions showed large effect sizes.
- Classroom-based interventions: Integrated into regular learning environments.
- Group interventions: Small group formats balancing individualized attention with peer interaction.
- Teacher-mediated interventions: Training teachers to modify instructional language.
Duration and Intensity
- Short-term interventions: 6-9 weeks, often showing significant improvements.
- Medium-term interventions: Over one school term, facilitating comprehensive skill development.
- Long-term interventions: Spanning multiple years for sustained improvement.
Context Considerations
Several contextual factors included:
- Age range: Tailored to developmental stages.
- Type of language disorder: Various language disorders assessed.
- Educational setting: Mainstream schools vs. specialist settings.
- Technology integration: Varied across studies, impacting engagement and learning.
References
- Lowe, H., Henry, L., Müller, L.-M., & Joffe, V. (2018). Vocabulary intervention for adolescents with language disorder: a systematic review.
- Gerber, S., Brice, A., Capone, N. C., Fujiki, M., & Timler, G. R. (2012). Language use in social interactions of school-age children with language impairments: an evidence-based systematic review of treatment.
- Tarvainen, S., Launonen, K., & Stolt, S. (2021). Oral language comprehension interventions in school-age children and adolescents with developmental language disorder: A systematic scoping review.