Project Activities
Researchers will implement a randomized controlled trial (RCT) across four cohorts. Each year, a new cohort of classrooms will be assigned to the teacher intervention or the waitlist control condition. Children will then be screened and evaluated as to their eligibility for Tier 2 supports. The eight lowest consented children will be pretested and then assigned to the intervention or to the active parent control group. Each cohort thus includes four groups: (1) teacher plus parent, (2) teacher only, (3) parent only, and (4) control. In the final year of the project, researchers will complete analysis and dissemination. Researchers will also complete cost and cost effectiveness analyses.
Structured Abstract
Setting
The research will occur in the urban Houston Independent School District (Texas).
Sample
The sample will include 90 prekindergarten (pre-k) classrooms that use a dual language model called Transitional Bilingual in which 90 percent of pre-k instruction is in Spanish and 10 percent is in English. A sample of 720 Tier-2 eligible children and their families within these classrooms will participate. Eligible 4-year-old children will meet screening criterion and speak Spanish at home. Researchers expect almost all Hispanic or Latino participants.
Researchers will examine individual teacher and parent coaching interventions as well as a combined teacher-and-parent intervention. These aligned approaches are designed to improve children's bilingual language development via adults' use of contingent responsiveness, guided learning, and extended discourse. In addition, both interventions include coaching to establish routines that support rich discourse during daily activities and book reading.
Research design and methods
Researchers will implement a randomized controlled trial (RCT) across four cohorts. Each year, a new cohort of classrooms will be assigned to the teacher intervention or the waitlist control condition. Children will then be screened and evaluated as to their eligibility for Tier 2 supports. The eight lowest consented children will be pretested and then assigned to the intervention or to the active parent control group. Each cohort thus includes four groups: (1) teacher plus parent, (2) teacher only, (3) parent only, and (4) control. In the final year of the project, researchers will complete analysis and dissemination. Researchers will also carry out cost and cost effectiveness analyses.
Control condition
Participants in the control condition will receive family handouts on developmental milestones and books. Control teachers will use their existing core curriculum (FrogStreet).
Key measures
Researchers will measure the quality of teacher and parent child-directed discourse including their responsiveness and use of language facilitation strategies. These measures include micro-analysis of malleable adult behaviors known to facilitate children's language development. Researchers will measure children's Spanish and English oral language outcomes, including proximal and distal measures of basic and academic language. They will assess children's executive function and social-behavioral outcomes. They will also measure (a) home language use patterns, (b) parent education, (c) children's initial skill levels, (d) classroom language usage patterns (L1/L1), and (e) teacher knowledge, all of which may moderate intervention effects.
Data analytic strategy
Researchers will use linear and generalized linear models including analysis of covariance (ANCOVA) framework and multi-level modeling for the primary data analyses.
Cost analysis strategy
They will estimate costs by (a) identifying ingredients/resources, (b) determining the cost of the resources, (c) analyzing the extent to which resource use are aligned with the original design, and (d) calculating cost effectiveness.
People and institutions involved
IES program contact(s)
Project contributors
Products and publications
Researchers will produce evidence as to the efficacy of a parent and teacher coaching model designed for use with DLLs, as well as information about the cost and cost effectiveness of the intervention. Findings from this project will be shared via conference presentations and peer-reviewed publications.
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Questions about this project?
To answer additional questions about this project or provide feedback, please contact the program officer.