Executive functions (EF), including working memory, inhibition, and cognitive flexibility, vary as a function of socioeconomic status (SES), with children from economically disadvantaged backgrounds having poorer performance than their higher SES peers. Using observational methods, we investigated cognitive stimulation in the home as a mechanism…

The Theory of Optimal Stimulation (Zentall & Zentall, "Psychological Bulletin," 94, 1983, 446) posits that the relation between activity level (AL) and cognitive performance follows an inverted U shape where midrange AL predicts better cognitive performance than AL at the extremes. We explored this by fitting linear and quadratic…

This study investigated whether higher maternal psychological distress, lower provision of psychosocial stimulation and a negative appraisal of parenting experience were associated with lower cognitive, motor, social-emotional and adaptive behaviour development in children under 3 years of age in Kenya. A cross-sectional design was used, with 81…

A wealth of literature has examined the association between breastfeeding and the development of cognitive abilities in childhood. In particular, at least some evidence exists suggesting that breastfed children perform better on measures of intelligence later in life. Although a correlation appears to be present, fewer observational studies have…

Many studies have shown that the visual cortex of blind humans is activated in non-visual tasks. However, the electrophysiological signals underlying this cross-modal plasticity are largely unknown. Here, we characterize the neuronal population activity in the visual and auditory cortex of congenitally blind humans and sighted controls in a…

We examined the associations between academic achievement and arts involvement (access to a musical instrument for the child at home, participation in unspecified after-school arts activities) in a sample of 2339 11-12-year-olds surveyed in the USA between 1998 and 2008. We compared the contributions of these variables to other kinds of cognitive…

Research on the effects of breastfeeding on child cognitive development has produced conflicting results, and many studies do not account for infant stimulation in the home. The aim of this study is to determine whether breastfeeding predicts enhanced cognitive development in one-year-old infants after controlling for the main socio-economic and…

The transition into school occurs at the intersection of multiple environmental settings. This study applied growth curve modeling to a sample of 1,364 American children, followed from birth through age 6, who had been categorized by their exposure to cognitive stimulation at home and in preschool child care and 1st-grade classrooms. Of special…

The study examined the longitudinal association of parental involvement in Head Start parent-focused programs, parenting behaviors, and the cognitive development of children by specifying two longitudinal growth models. Model 1 examined the longitudinal effects of the parental involvement in three Head Start parenting programs (parenting classes,…