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Updated: Feb 11, 2026

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Evidence-based pathways to intervention for children with language disorders.

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International Journal of Language & Communication Disorders
|April 27, 2018
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Summary

Speech and language therapists (SLTs) can support children with language disorders at all service tiers. Evidence supports direct SLT intervention for complex needs, while indirect models may benefit milder cases.

Keywords:
evidence based practice (EBP)interventionlanguage disorder

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Area of Science:

  • Pediatric Speech-Language Pathology
  • Child Language Disorders
  • Healthcare Service Delivery Models

Background:

  • Paediatric speech and language therapist (SLT) roles involve individualized intervention, collaboration, and advice.
  • A tiered service delivery approach is recommended, with increasing specialization for greater needs.

Purpose of the Study:

  • To examine the effectiveness of interventions for children with language disorders across different service tiers.
  • To evaluate the roles of SLTs within these tiers.
  • To propose an evidence-based SLT service delivery model.

Main Methods:

  • Systematic reviews and meta-analyses of interventions for pediatric language disorders.
  • Analysis of controlled, peer-reviewed group studies.
  • Discussion of SLT roles in intervention delivery.

Main Results:

  • Tier 1 (universal) and Tier 2 (targeted) interventions led by education services show effectiveness with trained staff.
  • Limited evidence exists for additional SLT benefit in Tiers 1 and 2.
  • Tier 3B (direct SLT intervention) benefits children with complex needs.
  • Tier 3A (indirect intervention managed by SLTs) can benefit children with milder needs.

Conclusions:

  • SLTs contribute across all tiers; prioritization requires evaluating cost-effectiveness.
  • Direct SLT intervention is well-evidenced for complex language disorders.
  • SLTs should investigate the effectiveness of service models lacking evidence.