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Prevention Science

, Volume 15, Issue 2, pp 156–164 | Cite as

Targeting the Specific Vocabulary Needs of At-Risk Preschoolers: A Randomized Study of the Effectiveness of an Educator-Implemented Intervention

  • Delphine Vuattoux
  • Christa Japel
  • Eric Dion
  • Véronique Dupéré
Article

Abstract

This randomized study examined the effectiveness of a preschool stimulation program created to teach words that had been selected by considering the needs of the target population of children. Twenty-two educators and their group of at-risk preschoolers (N = 222, M age = 4.27 years) were assigned to one of two conditions: control or intervention. In the latter condition, educators had to read specifically developed storybooks to their group and conduct stimulation activities. Despite the training and support they received, educators implemented the intervention with varying degrees of fidelity. Nonetheless, intent-to-treat comparison of the two conditions indicates that children in the intervention condition learned the meaning of a much greater number of words than their peers in the control condition. In addition, efficacy subset analyses that took into account fidelity of implementation show that the greatest gains were made by children who had an educator who had implemented the intervention reliably. Strategies for scaling up the intervention and optimizing its implementation are discussed.

Keywords

Preschoolers Vocabulary Explicit instruction Preschool educators Implementation fidelity 

Notes

Acknowledgments

This research was supported by the Canadian Council on Learning (grant no. 300-08-119-FPA), with additional support by the Social Sciences and Humanities Research Council (grant no. 820-2006-0049) and the Fonds de recherche—Société et culture (grant no. 125020). We gratefully acknowledge the contribution of Montreal and Eastern Townships childcare center administrators and educators who made this study possible, especially Stéphane Trudel and Martine Staehler.

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Copyright information

© Society for Prevention Research 2013

Authors and Affiliations

  • Delphine Vuattoux
    • 1
  • Christa Japel
    • 1
    • 3
  • Eric Dion
    • 1
  • Véronique Dupéré
    • 2
  1. 1.Département d’éducation et formation spécialiséesUniversité du Québec à MontréalMontrealCanada
  2. 2.École de psychoéducationUniversité de MontréalMontrealCanada
  3. 3.DEFSUQAMMontrealCanada

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