Abstract
This study investigated links of executive functioning to gains in school readiness skills and explored the mediating role of children's behavioral engagement in the PreK classroom. We collected direct assessments of executive functioning (EF) and observations of behavioral engagement for 767 children (mean age 52.63 months) from racially/ethnically diverse, low-income backgrounds three times over the PreK year. We also measured school readiness in the domains of language, literacy, and math using direct assessments and collected teacher-report measures of socialemotional-behavioral skills and approaches to learning. Our analyses addressed the following three research questions: 1) To what extent does children's EF predict school readiness skill gains during PreK? 2) To what extent does children's behavioral engagement in PreK classrooms predict school readiness skill gains? 3) To what extent does behavioral engagement mediate the relation of EF with school readiness skill gains? We observed that EF was positively related to gains in language, math, and approaches to learning. Regarding behavioral engagement, Negative Classroom Engagement was negatively related to gains in literacy, math, social-emotionalbehavioral skills, and approaches to learning while Positive Task Engagement was positively related to gains in approaches to learning. Negative Classroom Engagement significantly mediated the effects of EF on gains in the domains of literacy, socialemotional-behavioral skills, and approaches to learning. We describe implications of these findings for promoting children's ability to learn and thrive in PreK contexts with a focus on their engagement with teachers, peers, and learning activities.