There is a need for robust evidence about which educational interventions work in preschool to foster children's cognitive and socio-emotional learning (SEL) outcomes. Lab-based individually randomized experiments can develop and refine such interventions, and field-based randomized experiments (e.g., cluster randomized trials) evaluate their…

This chapter highlights the key assumptions underlying Randomized Control Trials (RCTs) and illustrates them with regard to the practice of RCTs in the realm of child and adolescent development. Given the prominence of RCTs in policy research, we analyze the possible ways in which these assumptions might not be met by single randomized…

A double-blind randomized controlled trial of n-3 long-chain polyunsaturated fatty acid (n-3 LCPUFA) supplementation or matching placebo during third trimester of pregnancy was conducted within the COPSAC[subscript 2010] mother-child cohort consisting of 736 women and their children. The objective was to determine if maternal n-3 LCPUFA pregnancy…

As the number of publicly funded early childhood education (ECE) programs increases, policymakers will need empirical evidence to justify the taxpayer investment. Such justification will require a stronger understanding of the essential components of an ECE program's design, as well as solid evidence on which components, or constellations of…

Strain provides his perspective on four issues facing science and practice in early childhood and special education. He points to the need for (a) long-term functional research, (b) greater emphasis on the use of evidence-based programs in practice, (c) moving special education research back to the Office of Special Education Programs, and (d)…

Within the field of developmental science, there is a general agreement of the need to work together across academic disciplinary boundaries in order to advance the understandings of how to optimize child development and learning. However, experience also shows that such collaborations may be challenging. This paper reports on the experiences of…

Structural quality in childcare centers is considered a precondition for process quality, which in turn is related to children's outcomes. However, the evidence on relations between structural and process quality is mixed. Moreover, despite strong theoretical claims, empirical evidence supporting the indirect relation of structural features…

Telehealth training may benefit parents' use of early intervention for children with autism spectrum disorder (ASD). This study is one of the few randomized trials to compare telehealth parent training in the Early Start Denver Model (P-ESDM) with a community treatment-as-usual, early intervention program. Parents were randomized to 12 weekly…

Background: Interventions found to be effective in research settings are often not as effective when implemented in community settings. Considering children with autism, studies have rarely examined the efficacy of laboratory-tested interventions on child outcomes in community settings using randomized controlled designs. Methods: One hundred and…

Little research has been conducted on unconditional cash transfers (UCTs) despite their growing prevalence in Africa, including South Africa, Zambia, Zimbabwe, Kenya, Malawi, Lesotho, and Uganda. In this study, researchers implemented a randomized control trial with over 2,500 households to investigate the impact of Africa's child grant program on…

A randomized controlled trial was conducted to assess the feasibility of Responsive Teaching (RT) with a sample of 28 Saudi Arabian preschool-aged children with diagnoses of autism and their mothers over a 4-month period of time. RT is an early intervention curriculum that attempts to promote children's development by encouraging parents to engage…

Early parent-infant home visiting interventions have been found to be effective in both developed and developing countries. However, there is a need to build an evidence base for these interventions in the South African context, to inform local early childhood development policy. The Ububele Mother-Baby Home Visiting Programme in Alexandra,…

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…

Child Development Accounts (CDAs) aim to increase college completion rates among disadvantaged youth by helping youth see themselves as "college bound." This article summarizes findings about the implementation and impacts of universal, progressive CDAs, with emphasis on outcomes for disadvantaged children. Data come from a large…

Research Findings: Temperament, often defined in terms of reactive and regulatory tendencies, has been shown to predict child outcomes over and above other risk factors and represents a critical aspect of social-emotional development. The present article is a systematic review of temperament-based interventions targeting caregivers, wherein the…