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Predicting response to treatment in a Tier 2 supplemental vocabulary intervention


Purpose: To effectively implement a response to intervention approach, there is a need for timely and specific information about student learning in response to treatment to ensure that treatment decisions are appropriate. This exploratory study examined responsivity to a supplemental, Tier 2 vocabulary intervention delivered to preschool children with limited language abilities.

Method: A secondary analysis of a cluster-randomized trial of a supplemental vocabulary intervention was conducted. Responsivity (e.g., adequate learning) to the intervention was examined, and learning in the 1st few weeks of intervention was evaluated as a possible predictor of response to intervention.

Results: Using a criterion of learning of 20% of target vocabulary, nearly one third of participants were identified as poor responders. A 1st unit benchmark was identified that maximized the sensitivity to identification of children who were likely to respond to the intervention.

Conclusions: Even for generally effective interventions, there is likely to be a substantial proportion of children who are not responsive. Learning in the 1st few weeks of intervention may be a useful indicator of appropriate response to treatment and could inform instructional decisions. (author abstract)

Resource Type:
Reports & Papers
United States

Related resources include summaries, versions, measures (instruments), or other resources in which the current document plays a part. Research products funded by the Office of Planning, Research, and Evaluation are related to their project records.

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