Boosting School Readiness: Should Preschool Teachers Target Skills or the Whole Child?

We use experimental data to estimate impacts on school readiness of different kinds of preschool curricula - a largely neglected preschool input and measure of preschool quality. We find that the widely-used "whole-child" curricula found in most Head Start and pre-K classrooms produced higher classroom process quality than did locally-developed curricula, but failed to improve children's school readiness. A curriculum focused on building mathematics skills increased both classroom math activities and children's math achievement relative to the whole-child curricula. Similarly, curricula focused on literacy skills increased literacy achievement relative to whole-child curricula, despite failing to boost measured classroom process quality.

III. TESTING FOR QUALITY THRESHOLDS AND FEATURES IN EARLY CARE AND EDUCATION.

In this chapter, we report on the analyses focusing on both quality thresholds and quality features. First, we address questions about quality thresholds, using two analytic approaches. The analyses ask whether there is evidence suggesting thresholds in the association between a specific quality measure and a specific child outcome. Second, we extend these analyses to ask whether each child outcome is more strongly related to global quality measures or to quality measures that measure teacher-child interactions or quality of instruction in a given content area. The research to date provides the basis for the articulation of two hypotheses related to quality thresholds and features: (1) the quality of ECE is a stronger predictor of residualized gains in child outcomes in classrooms with higher quality than in classrooms with lower quality and (2) more specific measures of quality are stronger predictors of residualized gains in child outcomes than are global measures. We turn now to analyses intended to address these hypotheses by using data from several data sets.

Preschool center care quality effects on academic achievement: an instrumental variables analysis.

Much of child care research has focused on the effects of the quality of care in early childhood settings on children's school readiness skills. Although researchers increased the statistical rigor of their approaches over the past 15 years, researchers' ability to draw causal inferences has been limited because the studies are based on nonexperimental designs. The purpose of the present study was to demonstrate how an instrumental variables approach can be used to estimate causal impacts of preschool center care quality on children's academic achievement when applied to a study in which preschool curricula were randomly assigned across multiple sites. We used data from the Preschool Curriculum Evaluation Research Initiative (PCER; n = 2,700), in which classrooms or preschools were randomly assigned to that grantee's treatment curriculum or "business as usual" conditions in 18 research sites. Using this method, we demonstrate how developmental researchers can exploit the random-assignment designs of multisite studies to investigate characteristics of programs, such as preschool center care quality, that cannot be randomly assigned and their impacts on children's development. We found that the quality of preschool care received by children has significant, albeit modest, effects on children's academic school readiness, with effect sizes of .03 to .14 standard deviation increases in academic achievement associated with a 1 standard deviation increase in quality. Applications and potential policy implications of this method are discussed.

The Effect of Baby Books on Mothers' Reading Beliefs and Reading Practices.

The impact of a baby book intervention on promoting positive reading beliefs and increasing reading frequency for low-income, new mothers (n = 167) was examined. The Baby Books Project randomly assigned low-income, first-time mothers to one of three study conditions, receiving educational books, non-educational books, or no books, during pregnancy and over the first year of parenthood. Home-based data collection occurred through pregnancy until 18 months post-partum. Mothers who received free baby books had higher beliefs about the importance of reading, the value of having resources to support reading, and the importance of verbal participation during reading. The results showed that providing any type of baby books to mothers positively influenced maternal reading beliefs, but did not increase infant-mother reading practices. Maternal reading beliefs across all three groups were significantly associated with self-reported reading frequency when children were at least 12 months of age.

Using baby books to change new mothers' attitudes about corporal punishment.

OBJECTIVE: Research has found corporal punishment to have limited effectiveness in altering child behavior and the potential to produce psychological and cognitive damage. Pediatric professionals have advocated reducing, if not eliminating its use. Despite this, it remains a common parenting practice in the US. METHODS: Using a three-group randomized design, this study explored whether embedding educational information about typical child development and effective parenting in baby books could alter new mothers' attitudes about their use of corporal punishment. Low-income, ethnically diverse women (n=167) were recruited during their third trimester of pregnancy and followed until their child was 18 months old. RESULTS: Findings from home-based data collection throughout this period suggest that educational baby books compared with non-educational baby books or no books can reduce new mothers' support for the use of corporal punishment (respective effect sizes=.67 and .25) and that these effects are greater for African-American mothers (effect sizes=.75 and .57) and those with low levels of educational attainment (high school diploma, GED, or less) (effect sizes=.78 and .49). CONCLUSION: Given their low cost and ease of implementation, baby books offer a promising way to change new mothers' attitudes and potentially reduce the use of corporal punishment with infants and toddlers.