Executive function, self-regulation skills, behaviors, and socioeconomic status in early childhood

Prior research has established steep socioeconomic status (SES) disparities in children's cognitive skills at kindergarten entry. Yet, few studies have had comprehensive, multi-informant data to examine SES-related differences in foundational social and emotional skills and executive function. The objective of the current study is to systematically examine SES-related differences in young children's executive function (EF), self-regulation skills, and behaviors. The current study analyzed data on 2,309 young children from the Early Learning Study at Harvard (ELS@H). Multi-method (direct-assessment and reports) and multi-informant (parents and early education and care educators) information on children's executive function, self-regulation skills, and internalizing, externalizing, and adaptive behaviors were used. A parametric framework employing Ordinary Least Squares (OLS) estimation was used to quantify the size of the SES-related differences in this set of children's foundational social-emotional skills. On average, there were differences of 0.24-0.45 SD for EF, 0.22-0.32 SD for self-regulation skills, and 0.27-0.54 SD for behaviors favoring children from the highest SES quartile of the distribution of SES relative to children from the lowest quartile. The SES-related differences were consistent across direct assessment, parent reports, and educator reports. Some differences were larger for older children relative to their younger counterparts.