This study aimed to determine the effects of the Active Early Learning (AEL) childcare center-based physical activity intervention on early childhood executive function and expressive vocabulary via a randomized controlled trial. Three-hundred-and-fourteen preschool children (134 girls) aged 3-5 years from 15 childcare centers were randomly…

Maternal responses to infant facial expressions were examined in two socioeconomically diverse samples of South African mothers (Study I, N = 111; and Study II, N = 214; age: 17-44 years) using pupil and gaze tracking. Study I showed increased pupil response to infant distress expressions in groups recruited from private as compared to public…

We compared the extent to which the long-term influence of family socioeconomic status (SES) on children's school performance from age 7 through 16 years was mediated by their preschool verbal and nonverbal ability. In 661 British children, who completed 17 researcher-administered ability tests at age 4.5 years, SES correlated more strongly with…

This study investigated the vocabulary development of children (N = 547) from linguistically and socioeconomically diverse classrooms in Germany from age 3 in preschool to age 7 in Grade 1. The results showed that for dual language learners (DLLs, n = 107) growth rates in their German majority language skills varied over classrooms. Compared to…

Amid growing controversy about the oft-cited "30-million-word gap," this investigation uses language data from five American communities across the socioeconomic spectrum to test, for the first time, Hart and Risley's (1995) claim that poor children hear 30 million fewer words than their middle-class counterparts during the early years…

Two experiments investigated whether 4- and 5-year-old children choose to learn from informants who use more complex syntax (passive voice) over informants using more simple syntax (active voice). In Experiment 1 (N = 30), children viewed one informant who consistently used the passive voice and another who used active voice. When learning novel…

This study investigated 282 eight- to twelve-year-old Danish majority children's judgments and justifications of exclusion based on gender and ethnicity (i.e., Danish majority children and ethnic-minority children of a Muslim background). Children's judgments and reasoning varied with the perpetrator of the exclusion and the social identity of the…

Investigated the extent to which category clustering in recall is dependent on preferred organization of the to-be-recalled items and whether preferred organization or recall performance is associated with ethnic or economic group membership. White children sorted taxonomically more often than Black children, who preferred functional organization…

Reports the results of a multiple regression analysis conducted to determine, in a group of three- to six-year-old children, the magnitude of IQ variance accounted for by physical growth variables and socioeconomic status indicators. (RH)

Identifies the socioeconomic, demographic, and attitudinal correlates of neighborhood differences in the rate of child abuse and neglect, by comparing families in a high risk and a low risk neighborhood matched for socioeconomic level. (CM)

The effects of father absence on educational achievement and intellectual development of 6- to 11-year-old children were investigated by employing a nationally representative sample of 5,493 father-present and 616 father-absent children from the Health Examination Survey of the National Center for Health Statistics. (Author/RH)

Assessed predictions from social identity theory (SIT) concerning acquisition of young children's intra- and intergroup attitudes and cognitions. Found that children as young as 5 years of age were sensitive to the status of their social group, and that ingroup status had important implications for their desire to remain group members and their…

Cluster analytic methods were used to create 4 theorized ethnic identity statuses (achieved, foreclosed, moratorium, and diffused) among 940 African American adolescents (13-17 years old), college students (18-23 years old), and adults (27-78 years old). Evidence for the existence of 4 identity statuses was found across the 3 age groups. The…

This study examined the development of implicit race attitudes in American and Japanese children and adults. Implicit ingroup bias was present early in both populations, and remained stable at each age tested (age 6, 10, and adult). Similarity in magnitude and developmental course across these 2 populations suggests that implicit intergroup bias…