Maximizing outcomes for preschoolers with developmental language disorders

This dataset contains de-identified baseline and short-term follow-up data from a randomized controlled trial examining the effects of Enhanced Milieu Teaching–Sentence Focused (EMT-SF), an 18-month, multi-phase caregiver-implemented intervention for children at risk for developmental language disorder (DLD) (ClinicalTrials.gov: NCT03782493). The trial enrolled 108 children between 30 and 31 months of age and their caregivers. Children were randomly assigned to either the EMT-SF treatment group or a control condition. Seven participants who did not consent to additional data sharing are excluded from this dataset.

The dataset includes assessments collected at three time points: baseline (T30; child age ~30 months), 6 months post-baseline (T36; child age ~36 months), and 12 months post-baseline (T42; child age ~42 months). Baseline measures include standardized language assessment data from the Preschool Language Scales, Fifth Edition (PLS-5), standardized language sample variables, child–caregiver interaction (CCX) measures, and demographic characteristics. At T36, data include repeated language sample and CCX measures as well as receptive and expressive vocabulary assessments from the Peabody Picture Vocabulary Test, Fifth Edition (PPVT-5) and the Expressive Vocabulary Test, Third Edition (EVT-3). At T42, data include repeated language sample and CCX measures and grammar assessments from the Structured Photographic Expressive Language Test–Preschool, Second Edition (SPELT-P2) and the Test of Early Grammatical Impairment (TEGI).

The primary analyses examined short-term vocabulary outcomes at T36 and grammar outcomes at T42 using structural equation modeling (SEM) with latent variables representing vocabulary and grammar constructs. Results of analyses conducted on this shared dataset may differ slightly from published findings due to the exclusion of participants who did not consent to data sharing.

This dataset enables replication of published analyses and supports secondary analyses examining early vocabulary development, grammar development, caregiver-implemented intervention effects, and longitudinal language trajectories in children at risk for DLD.