This study used a machine learning framework in conjunction with a large battery of measures from 9,718 school-age children (ages 9-11) from the Adolescent Brain Cognitive Development[superscript SM] (ABCD) Study to identify factors associated with fluid cognitive functioning (FCF), or the capacity to learn, solve problems, and adapt to novel…

A double-blind randomized controlled trial of n-3 long-chain polyunsaturated fatty acid (n-3 LCPUFA) supplementation or matching placebo during third trimester of pregnancy was conducted within the COPSAC[subscript 2010] mother-child cohort consisting of 736 women and their children. The objective was to determine if maternal n-3 LCPUFA pregnancy…

Associations between grandparental investment and child outcomes were investigated using three waves of a longitudinal British Millennium Cohort Study that included children between the ages of 9 months and 5 years (n = 24,614 person-observations from 13,744 children). Grandparental investment was measured by parent--grandparent contact frequency…

Mobile phones and other wireless devices that produce electromagnetic fields (EMF) and pulsed radiofrequency radiation (RFR) are widely documented to cause potentially harmful health impacts that can be detrimental to young people. New epigenetic studies are profiled in this review to account for some neurodevelopmental and neurobehavioral changes…

This study is the first to test whether receipt of a federal child care subsidy is associated with children of immigrants' school readiness skills. Using nationally representative data (n ˜ 2,900), this study estimates the associations between subsidy receipt at age 4 and kindergarten cognitive and social outcomes, for children of immigrant…

Although some evidence indicates that even very young children engage in rudimentary forms of strategic behavior, the underlying mechanisms remain largely unknown. This study tested the hypothesis that uncertainty monitoring underlies such behaviors. Three-, four-, and five-year-old children ("N" = 88) completed a perceptual…

A large-scale ("N" = 552) controlled multivariate prospective 14-year longitudinal study of a developmental cascade embedded in a developmental system showed that information-processing efficiency in infancy (4 months), general mental development in toddlerhood (18 months), behavior difficulties in early childhood (36 months),…

This study examined the direct and interactive effects of stress reactivity and family adversity on socioemotional and cognitive development in three hundred and thirty-eight 5- to 6-year-old children. Neurobiological stress reactivity was measured as respiratory sinus arrhythmia and salivary cortisol responses to social, cognitive, sensory, and…

This study examined the prevalence, predictors, and outcomes of spanking and verbal punishment in 2,573 low-income White, African American, and Mexican American toddlers at ages 1, 2, and 3. Both spanking and verbal punishment varied by maternal race/ethnicity. Child fussiness at age 1 predicted spanking and verbal punishment at all 3 ages.…

Suggests that, with the waning influence of Piaget and shortcomings of information-processing perspectives of cognitive growth, cognitive developmentalists lack a metatheory to guide their research. Posits developmental biology as metatheory for cognitive development. Introduces basic principles of evolutionary psychology, and examples of…

A total of 82 fourth and fifth graders participated in a 15-week intervention program during which they confronted problems requiring formal operational thought. Subjects showed advancement toward formal operations on the pendulum and chemicals problems (Inhelder and Piaget) and on a third problem on immediate and 4-month posttests. (Author/JH)

A study of the development of elementary school children's appreciation of riddles was conducted within the framework of the incongruity and resolution theory of humor. (ST)

A total of 35 variables descriptive of birth and obstetric complications, prematurity, maternal discomfort, and demographic status were studied for a sample of 322 infants. Factor analyses of these variables resulted in seven major factors that were used to predict developmental status at 1 year of age for 233 of the subjects. (Author/SB)

Move sequence analysis revealed that, when presented with problems having subgoals difficult to order, 40 preschoolers between 45 and 70 months of age (1) tended to avoid backup; (2) were sensitive to incremental progress toward a goal; and (3) searched moves ahead for a goal. None of several indices of performance were reliably correlated with…