Promoting Global Early Child Development Through Play: Two Sustainable, Effective Models

Supporting Reading Aloud Beginning Prenatally and in Early Infancy: A Randomized Trial in Brazil

OBJECTIVE

A previous study of a reading aloud intervention in Brazil, called Universidade do Bebê (UBB), demonstrated impacts on parenting and child outcomes for families with toddlers and preschoolers, even for parents with low literacy, and cognitive stimulation mediated effects on child outcomes. In a new study, we sought to determine whether similar results would be found when UBB was provided beginning in pregnancy through early toddlerhood, including (1) impacts on parenting and child development, (2) variation in impact on parenting and child outcomes by parent literacy level, and (3) indirect impacts on child outcomes through cognitive stimulation.

METHOD

Women with low income who were either pregnant or with children aged 0 to 24 months were randomized to UBB or control groups. UBB consisted of monthly workshops focused on reading aloud complemented by a book-lending library. Participants were evaluated at baseline and approximately 11 months later (M = 11.0, SD = 0.4; range 9.9-12.2 months) on parenting (cognitive stimulation, beliefs about early reading, screen time, and discipline) and child development.

RESULTS

Four hundred families (n = 200 UBB) were randomized; 286 (71.5%; n = 150 UBB) received 11-month follow-up. UBB families showed increased cognitive stimulation (Cohen's d = 0.92) and awareness about the importance of early reading ( d = 0.90) than controls, with no differences by parent literacy level. UBB was associated with reduced screen time and increased vocabulary, but only for families with low parent literacy. UBB effects on child outcomes were mediated by cognitive stimulation.

CONCLUSION

The findings support implementation of reading aloud programs beginning in pregnancy and early childhood.

Reading Aloud, Self-Regulation, and Early Language and Cognitive Development in Northern Brazil

OBJECTIVES

In this study, we examined (1) whether a reading aloud intervention, Universidade do Bebê (UBB), had impacts on self-regulation; (2) whether effects on child outcomes were mediated by self-regulation; and (3) whether effects of UBB were explained through a sequential pathway of impact, including cognitive stimulation in the home, parent-child interactive reading, and self-regulation.

METHODS

We performed a cluster randomized controlled trial of UBB in child care centers serving low-income children (mean age 37.4 months; SD = 6.5) in Northern Brazil. The child care centers were randomized to receive UBB or standard care (control). Families in UBB could borrow children's books weekly and participate in monthly workshops focused on reading aloud. Parent-child dyads (n = 484, intervention = 232, control = 252) were evaluated at baseline and 9 months later on: child self-regulation, vocabulary, intelligence quotient (IQ), working memory, and phonological memory and measures of cognitive stimulation in the home and parent-child interactive reading. Multilevel analyses accounted for baseline performance, sociodemographics, and clustering within centers and sites.

RESULTS

The UBB group showed significantly higher self-regulation (Cohen's d = 0.25), compared with the control group, particularly in the subdomains of Attention (d = 0.24) and Impulse Control (d = 0.21). Previously shown impacts of UBB on receptive vocabulary, IQ, and working memory were mediated by self-regulation. Effects of UBB on self-regulation and child outcomes were partially explained through cognitive stimulation in the home and parent-child interactive reading.

CONCLUSION

Self-regulation represents an important mechanism by which reading aloud interventions affect language and cognitive outcomes. Investigators should consider the role of self-regulation when refining interventions, seeking to prevent poverty-related disparities.