Naturalistic instructional approaches are used to provide intentional and systematic instruction to young children with disabilities during typically occurring activities. Several naturalistic instructional approaches have been described in the extant literature, although different terms have been used to refer to these approaches (e.g., activity-based intervention, embedded instruction). The purpose of this systematic review was to identify, examine, and summarize the empirical literature focused on naturalistic instructional approaches for preschool children with disabilities when instruction was delivered in classroom settings. Forty-three studies that met established inclusion criteria were reviewed and coded using systematic procedures. Studies were coded to permit within-and across-approach comparisons as well as with respect to quality indicators for study design features and relationships to reported outcomes. Findings suggest a need to specify clearly the contextual and procedural components of naturalistic instructional approaches to advance understanding about this evidence-based practice and the functional relationships between implementation of the approaches and child learning outcomes.

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We conducted a randomized controlled potential efficacy trial to examine effects of two variants of the Tools for Teachers (TfT) professional development (PD) intervention on preschool teachers’ implementation of embedded instruction practices and children’s developmental and learning outcomes. Thirty-six preschool teachers recruited from three school districts were randomly assigned within each district to one of three PD conditions. Preschool children with disabilities ( N = 106) from enrolled teachers’ classrooms participated in the study. Results showed that, compared with business-as-usual PD teachers, teachers who received either PD intervention wrote higher-quality learning targets for study children. Teachers who received the PD intervention that included on-site coaching implemented more embedded instruction learning trials compared to teachers in the other two conditions. Compared with children whose teachers participated in BAU PD, children whose teachers received either PD intervention had greater developmental and learning gains as measured by standardized assessments.

We describe historical foundations of professional development (PD) in early childhood intervention (ECI) and where we stand on the silver anniversary of PL 99-457. To advance its scientific basis, we assert that it is important to define what is meant by PD; identify structural and process features of PD hypothesized to be effective for supporting improvements in intervention quality and effectiveness; specify theories of action or change related to how specific features of PD are assumed to affect practitioner behaviors and, in turn, child or family outcomes; and conduct experimental studies that provide evidence to support or refute specified theories of action. We describe progress being made in each of these areas and discuss several challenges and future directions related to advancing the scientific basis of PD in ECI.

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