A Systematic Review of Interventions for Late Talkers: Intervention Approaches, Elements, and Vocabulary Outcomes
American Journal of Speech-Language Pathology
Carson, L., Baker, E., et al. (2022).
American Journal of Speech-Language Pathology, 31(6), 2861-2874.
This systematic review investigates the effects of direct (clinician-directed), indirect (parent-implemented via coaching), and hybrid intervention on receptive and expressive vocabulary for late talkers between 18 and 42 months of age.
None declared
1980-2019
Randomized controlled trials (RCTs), quasi-experimental design, case study/series
34
No differences in outcomes were noted between direct, indirect, and hybrid approaches (e.g., clinician-led and clinicians coaching others to lead interventions). The majority of studies (31/34) reported positive outcomes for expressive vocabulary. Mixed outcomes were noted regarding receptive vocabulary. Limitations included variability in the methodological quality of the included studies.
