Background: A large evidence base suggests that without effective early intervention, young children who exhibit persistent challenging behavior often face a host of long-term social and academic challenges (Bulotsky-Shearer & Fantuzzo, 2011; Hauser-Cram & Woodman, 2016; Kazdin, 1995; Lane et al., 2008; Miller et al., 2017). Challenging…

Preschool children are developing social and emotional skills, like recognizing and expressing emotions, building relationships with peers and adults, following directions, and solving problems. To develop these skills, young children rely on support from adults, including teachers, who model and teach children social and emotional skills in the…

Background/Context: State-funded prekindergarten has expanded rapidly in the U.S., and there are expectations that it will have longer-term positive effects on later academic and nonacademic outcomes (e.g., Phillips et al., 2017). There is strong evidence of pre-k effects on measures of kindergarten readiness (e.g., Gormley et al., 2005; Weiland…

Background/Context: Childhood trauma can increase preschooler's risk for behavioral problems, poor student-teacher relationships, and expulsion (Loomis, 2020; Zeng et al., 2019). Efforts have been undertaken to address the gaps in knowledge and confidence of ECE teachers by integrating trauma-informed approaches into ECE settings, who by virtue of…

When presenting results from rigorous, field-based evaluations of educational interventions, researchers often reveal methodological barriers they face in designing studies to assessing program effectiveness. The evaluations funded by the Investing in Innovation Fund (i3) present a timely opportunity for identifying relevant and pressing issues…

A growing body of research has shown that high quality early care and education (ECE) is positively related to the development of children's social and academic skills (e.g., Barnett, 2011; Lamb & Ahnert, 2006; NICHD ECCRN, 2006). There is evidence that high quality ECE experiences can improve children's levels of social adjustment (Bierman et…

The aim of the "Tools of the Mind" prekindergarten curriculum is to enhance children's executive function skills within an instructional context that promotes the basic academic and social skills that prepare them for kindergarten and beyond. To investigate the effectiveness of "Tools" in achieving this aim, the authors are…

This paper investigates the long-term impact of participation in the Chicago School Readiness Project (CSRP) during the Head Start year on children's behavioral outcomes at the end of their Kindergarten year. The primary questions addressed in the paper are: (1) What is the experimental impact of CSRP on two-year change (from Fall Head Start to…

In experimental studies, researchers are often interested in secondary research questions that explore important aspects of main findings, such as whether or not program effects vary according to the level of fidelity in which the program has been implemented; or according to the dosage received by individuals participated in the program. In this…

As a result of the 1998 reauthorization of Head Start, the Department of Health and Human Services conducted a national evaluation of the Head Start program. The goal of Head Start is to improve the school readiness skills of low-income children in the United States. There is a substantial body of experimental and correlational research that has…

The aim of this paper is to address two research questions related to the policy goal of having all children ready to learn at kindergarten entry. First, to what extent are children's socioemotional skills and behavior higher when they experience higher quality preschools? Second, are the effects of preschool center quality on these school…

Most of the literature has examined linear associations, yielding findings that higher quality is better and lower quality is worse (Vandell, 2004), but identification of thresholds in the association between quality and child outcomes has been a goal of researchers and policy makers for several reasons. A primary goal has been to identify levels…

This research investigated the effects of two contrasting pre-k curricula, relative to practice as usual, on subsequent academic achievement. One curriculum had a strong literacy focus, the other was a less didactic "developmentally appropriate" curriculum that allowed children to have more influence on classroom activities. The purpose…