Research-based, Developmentally Informed Research Articles

Evidence-Based Program Implementation Variability in New Contexts: The Head Start REDI Program

AbstractThis study involved a pilot implementation of an evidence based school readiness intervention in new community contexts. The Head Start Research Based, Developmentally Informed (REDI) program was implemented in preschools on and near a Native American reservation with both indigenous and non-indigenous students and teachers. The REDI curriculum involved 5 subcomponents targeting children’s literacy skills and social-emotional development. Teachers were provided with inperson and on-line training and in-person implementation support from a REDI coach. Implementation fidelity included ratings of of curriculum dosage and child engagement, as well as coach ratings of teaching quality using a modified version of the Classroom Assessment Scoring Scale (CLASS). Teachers indicated which adaptations they made to the curriculum and the reasons for these adaptations. Teachers also completed qualitative, post-implementation interviews to obtain their impressions of REDI and the need for planned modifications in their context. Analyses included measures of implementation fidelity and qualitative evaluation of adaptations. Results indicated that teachers found the REDI program both feasible and helpful for their students. Suggestions for planned adaptations included more STEM activities and the freedom to choose the dialogic reading books. Many spontaneous adaptations were noted. Teachers indicated that pragmatic issues, such as lack of time, were the main reasons for adapting the program, and deletions and substitutions of curricular activities were the most common types of changes. Implementation of program subcomponents improved gradually over the course of the school year. Some subcomponents were more likely to be adapted than others.

Reducing Adolescent Psychopathology in Socioeconomically Disadvantaged Children With a Preschool Intervention: A Randomized Controlled Trial.

Living in poverty increases exposure to adversities that undermine healthy development, impeding growth in the social-emotional and language skills that support adaptive coping and promote mental health. Evidence-based programs have the potential to improve current preschool practice and strengthen these early skills, potentially reducing risk for later psychopathology. The authors tested the hypothesis that an enrichment program in preschool would be associated with reduced levels of psychopathology symptoms at the transition from middle to secondary school. The Head Start REDI (Research-Based, Developmentally Informed) intervention was used to enrich preschool classrooms serving children from low-income families with an evidence-based social-emotional learning (SEL) program and a coordinated interactive reading program. Centers were randomly assigned to the intervention or usual practice, and 356 4-year-olds (58% White, 25% Black, 17% Latino; 54% female) were followed into early adolescence. Hierarchical linear models were used to evaluate intervention effects on teacher-rated psychopathology symptoms using the Strengths and Difficulties Questionnaire in grade 7 (ages 12-13) and grade 9 (ages 14-15), 8-10 years after the end of the intervention. Statistically significant intervention-related reductions were observed in conduct problems and emotional symptoms in the intervention group. In addition, the proportion of youths with clinically significant levels of conduct problems, emotional symptoms, and peer problems was reduced in the intervention group, with rates one-third of those in the control group. The study findings indicate that enriching preschool programs serving at-risk children with a relatively inexpensive evidence-based SEL program with interactive reading substantially improved the later benefits for adolescent emotional and behavioral health. This kind of SEL enrichment represents an approach that can leverage public investments in preschool programs to enhance public health.

Promoting resilience: A preschool intervention enhances the adolescent adjustment of children exposed to early adversity.

Two hundred ninety-four children from low-income families (58% White, 17% Latinx, 25% Black; 54% girls; Mage = 4.49 years old at study entry) were recruited from Head Start classrooms to participate in a randomized-controlled trial of the project Research-based, Developmentally Informed (REDI) preschool intervention and then followed longitudinally for 10 years through 9th grade. At study entry, parents reported on their children's exposure to adverse childhood experiences (ACEs). Youth reported on their feelings of social-emotional distress and school bonding after making the transition into middle school (7th grade) and high school (9th grade). Multilevel latent profile analyses revealed three profiles of adolescent distress and school bonding. Increased rates of ACEs in early childhood predicted membership in adolescent profiles characterized by heightened social-emotional distress and reduced levels of school bonding. The REDI intervention that focused on promoting early social-emotional and language skills in preschool moderated the impact of early ACEs on adolescent adjustment and promoted youth resilience, significantly buffering children from the negative impact of early ACEs on their levels of social-emotional distress and school bonding. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Sustained effects of a school readiness intervention: 5th grade outcomes of the Head Start REDI program

This study examined the sustained effects of the Head Start Research-based Developmentally Informed (REDI) program, which enriched preschools with evidence-based programming targeting social-emotional and language/emergent literacy skills. 44 Head Start classrooms were randomly assigned to intervention or a usual practice control group, and 356 4-year-olds (25% African American, 17% Latino, 54% female) were followed through the end of 5th grade. Growth curve analyses revealed that significant intervention effects on teacher-rated social adjustment, academic engagement, and parent involvement identified at the end of the Head Start year were sustained throughout elementary school. These findings demonstrate that evidence-based curricula combined with professional development support can enhance preschool programming and promote the elementary school adjustment of children living in poverty.

Important issues in estimating costs of early childhood educational interventions: An example from the REDI program

Early childhood education (ECE) interventions hold great promise for not only improving lives but also for potentially producing an economic return on investment linked to key outcomes from program effectiveness. Assessment of economic impact relies on accurate estimates of program costs that should be derived consistently to enable program comparability across the field. This is challenged by a lack of understanding of the best approach to determine program costs that represent how they will occur in the real world and how they may vary across differing circumstances. Thorough and accurate cost analyses are vital for providing important information toward future implementations and for enabling analysis of potential return on investment. In this paper, we present five key issues most relevant to cost analysis for ECE programs that interventionists should acknowledge when estimating their programs' costs. Attention to these issues more broadly can lead to comprehensive and thorough cost estimates and potentially increase consistency in cost analyses. These issues are illustrated within the cost analysis of REDI (Research-based, Developmentally Informed), an enrichment program that seeks to extend the benefits of preschool through enhanced classroom and home visiting services. Implications for practice and policy are discussed.

How a preschool parent intervention produced later benefits: A longitudinal mediation analysis

Preschool parent interventions may produce downstream benefits if initial intervention gains are sustained and improve later socialization experiences. This study explored associations between initial effects of the REDI (Research-based Developmentally Informed) Parent program and later benefits. A randomized trial involving 200 Head Start children (55% European-American, 26% African American, 19% Latino, 56% male, Mage = 4.45 years) produced kindergarten gains in parenting and child skills. Four years later, sustained effects were evident in areas of academic performance and social-emotional competence at school and new benefits emerged at home. Initial gains in child academic and social-emotional domains mediated sustained gains within the same domains. In addition, initial gains in parent-child conversations, parent academic expectations, and child social-emotional skills mediated later reductions in parenting stress and child problems at home. Parent-focused preschool interventions may not only promote sustained improvements in child school adjustment but may also foster better family functioning over time.

Preschool Intervention Can Promote Sustained Growth in the Executive-Function Skills of Children Exhibiting Early Deficits

This study examined the effects of the Head Start Research-Based, Developmentally Informed (REDI) preschool intervention on growth in children’s executive-function (EF) skills from preschool through third grade. Across 25 Head Start centers, each of 44 classrooms was randomly assigned either to an intervention group, which received enhanced social-emotional and language-literacy components, or to a “usual-practice” control group. Four-year-old children (N = 356; 25% African American, 17% Latino, 58% European American; 54% girls) were followed for 5 years, and EF skills were assessed annually. Latent-class growth analysis identified high, moderate, and low developmental EF trajectories. For children with low EF trajectories, the intervention improved EF scores in third grade significantly more (d = 0.58) than in the control group. Children who received the intervention also demonstrated better academic outcomes in third grade than children who did not. Poverty often delays EF development; enriching the Head Start program with an evidence-based curriculum and teaching strategies can reduce early deficits and thereby facilitate school success.

Promoting parent academic expectations predicts improved school outcomes for low-income children entering kindergarten

This study explored patterns of change in the REDI (Research-based Developmentally Informed) Parent program (REDI-P), designed to help parents support child learning at the transition into kindergarten. Participants were 200 prekindergarten children attending Head Start (55% European-American, 26% African American, 19% Latino, 56% male, Mage=4.45years, SD=0.29) and their primary caregivers, who were randomized to a 16-session home-visiting intervention (REDI-P) or a control group. Extending beyond a prior study documenting intervention effects on parenting behaviors and child kindergarten outcomes, this study assessed the impact of REDI-P on parent academic expectations, and then explored the degree to which intervention gains in three areas of parenting (parent-child interactive reading, parent-child conversations, parent academic expectations) predicted child outcomes in kindergarten (controlling for baseline values and a set of child and family characteristics). Results showed that REDI-P promoted significant gains in parent academic expectations, which in turn mediated intervention gains in child emergent literacy skills and self-directed learning. Results suggest a need to attend to the beliefs parents hold about their child's academic potential, as well as their behavioral support for child learning, when designing interventions to enhance the school success of children in low-income families.

The randomized controlled trial of Head Start REDI: Sustained effects on developmental trajectories of social-emotional functioning.

This study assessed the sustained effects of Head Start REDI (Research-based, Developmentally Informed), a randomized controlled preschool preventive intervention, on children's developmental trajectories of social-emotional functioning into elementary school. Twenty-five Head Start centers with 44 classrooms were randomly assigned to deliver Head Start REDI or Head Start as usual. Head Start REDI featured an integrated language-emergent literacy and social-emotional skills curriculum and enhanced support for positive teaching practices. The 356 4-year-old children (54% girls; 25% African American; 17% Latino; 70% living in poverty) in those centers and classrooms were followed for 5 years (from preschool through third grade; 91% retention rate). Each year, teachers rated multiple domains of social-emotional functioning. Person-oriented latent class growth models were used to identify the different developmental trajectories of social-emotional functioning that children followed. Tests of proportions revealed that children who had been in the Head Start REDI intervention were statistically significantly more likely than children in the control condition to follow the most optimal developmental trajectories of social competence, aggressive-oppositional behavior, learning engagement, attention problems, student-teacher closeness, and peer rejection (odds ratio = 1.60-1.93). These findings suggest that enriching Head Start with evidence-based curriculum components and teaching practices can have long-lasting benefits for children's social-emotional functioning. These findings elucidate how high-quality preschool experiences promote core competencies that are critical to the school success of children living in poverty.

Helping Head Start Parents Promote Their Children's Kindergarten Adjustment: The Research-Based Developmentally Informed Parent Program.

Head Start enhances school readiness during preschool, but effects diminish after children transition into kindergarten. Designed to promote sustained gains, the Research-based Developmentally Informed (REDI) Parent program (REDI-P) provided home visits before and after the kindergarten transition, giving parents evidence-based learning games, interactive stories, and guided pretend play to use with their children. To evaluate impact, two hundred 4-year-old children in Head Start REDI classrooms were randomly assigned to REDI-P or a comparison condition (mail-home math games). Beyond the effects of the classroom program, REDI-P promoted significant improvements in child literacy skills, academic performance, self-directed learning, and social competence, demonstrating the utility of the approach in promoting gains in cognitive and social-emotional skills evident after the transition into kindergarten.

Sustaining High-Quality Teaching and Evidence-Based Curricula: Follow-Up Assessment of Teachers in the REDI Project

Research Findings: Recent research has validated the power of evidence-based preschool interventions to improve teaching quality and promote child school readiness when implemented in the context of research trials. However, very rarely are follow-up assessments conducted with teachers in order to evaluate the maintenance of improved teaching quality or sustained use of evidence-based curriculum components after the intervention trial. In the current study, we collected follow-up assessments of teachers 1 year after their involvement in the REDI (REsearch-based, Developmentally Informed) research trial to evaluate the extent to which intervention teachers continued to implement the REDI curriculum components with high quality and to explore possible preintervention predictors of sustained implementation. In addition, we conducted classroom observations to determine whether general improvements in the teaching quality of intervention teachers (relative to control group teachers) were sustained. Results indicated sustained high-quality implementation of some curriculum components (the Promoting Alternative THinking Strategies curriculum) but decreased implementation of other components (the language/literacy components). Sustained intervention effects were evident on most aspects of general teaching quality targeted by the intervention. Practice or Policy: Implications for practice and policy are discussed.

Promoting Children's Social-Emotional Skills in Preschool Can Enhance Academic and Behavioral Functioning in Kindergarten: Findings From Head Start REDI

Research Findings: This study examined processes of change associated with the positive preschool and kindergarten outcomes of children who received the Head Start REDI (REsearch-based, Developmentally Informed) intervention compared to usual practice Head Start. Using data from a large-scale randomized controlled trial (N = 356 children, 42% African American or Latino, all from low-income families), this study tests the logic model that improving preschool social-emotional skills (e.g., emotion understanding, social problem solving, and positive social behavior) as well as language/emergent literacy skills will promote cross-domain academic and behavioral adjustment after children transition into kindergarten. Validating this logic model, the present study finds that intervention effects on 3 important kindergarten outcomes (e.g., reading achievement, learning engagement, and positive social behavior) were mediated by preschool gains in the proximal social-emotional and language/emergent literacy skills targeted by the REDI intervention. It is important to note that preschool gains in social-emotional skills made unique contributions to kindergarten outcomes in reading achievement and learning engagement, even after we accounted for concurrent preschool gains in vocabulary and emergent literacy skills. Practice or Policy: These findings highlight the importance of fostering at-risk children's social-emotional skills during preschool as a means of promoting school readiness.

Effects of Head Start REDI on Children's Outcomes 1 Year Later in Different Kindergarten Contexts

One year after participating in the Research-based, Developmentally Informed (REDI) intervention or "usual practice" Head Start, the learning and behavioral outcomes of 356 children (17% Hispanic, 25% African American; 54% girls; Mage =4.59years at initial assessment) were assessed. In addition, their 202 kindergarten classrooms were evaluated on quality of teacher-student interactions, emphasis on reading instruction, and school-level student achievement. Hierarchical linear analyses revealed that the REDI intervention promoted kindergarten phonemic decoding skills, learning engagement, and competent social problem-solving skills, and reduced aggressive-disruptive behavior. Intervention effects on social competence and inattention were moderated by kindergarten context, with effects strongest when children entered schools with low student achievement. Implications are discussed for developmental models of school readiness and early educational programs.

Implementation quality: Lessons learned in the context of the Head Start REDI trial

This study uses data collected in the intervention classrooms (N = 22) of Head Start REDI (Research-based, Developmentally Informed), a randomized clinical trial testing the efficacy of a comprehensive preschool curriculum targeting children's social-emotional competence, language, and emergent literacy skills delivered by teachers who received weekly coaching support. Multiple dimensions of implementation (Dosage, Fidelity, Generalization, and Child Engagement) were assessed across curriculum components. Results indicated that REDI Trainers perceived significant growth in teacher implementation quality over time but that patterns differed by implementation dimension. Dosage and Fidelity of all intervention components were high at the beginning of the year and remained so over time while Generalization was low at baseline but increased significantly across the year. Variation in implementation was associated with variation on several child outcome measures in the social-emotional domain but not in the language and literacy domains.

Individual Factors Associated With Professional Development Training Outcomes of the Head Start REDI Program

Research Findings: This study examined factors associated with process and content outcomes of the training provided in the context of Head Start REDI (Research based Developmentally Informed), a preschool curriculum designed to enhance the quality of interactions (social–emotional and language–literacy) between teachers and children. REDI professional development included 4 days of training and weekly coaching. Data for 22 intervention teaching pairs (N = 44) were used in the study. With the exception of years of education and emotional exhaustion, distal teacher factors (i.e., professional characteristics, personal resources, and perceptions of the work environment) were unrelated to implementation fidelity, whereas openness to consultation showed a significant association. Practice or Policy: The findings emphasize the importance of teacher engagement in the training process for program effectiveness.