Debates about lowering the voting age often center on whether 16- and 17-year-old adolescents possess sufficient cognitive capacity and political knowledge to participate in politics. Little empirical research has examined age differences in adolescents' and adults' complexity of reasoning about political issues. We surveyed adults (n = 778;…

There is general consensus that the representation of the human face becomes functionally specialized within the first few months of an infant's life. The literature is divided, however, on the question whether the specialized representation of the remainder of the human body form follows a similarly rapid trajectory or emerges more slowly and in…

Numerous event-related potential (ERP) studies have examined adults' neural responses to child emotional expressions to understand the neurobiological mechanisms contributing to caregiving. It is unclear, however, whether one emotion evokes an enhanced response across components, and whether this pattern differs based on parent status or other…

Previous event-related potential (ERP) work has indicated that the neural processing of action sequences develops with age. Although adults and 9-month-olds use a semantic processing system, perceiving actions activates attentional processes in 7-month-olds. However, presenting a sequence of action context, action execution and action conclusion…

Learning-related behaviors are important for school success. Socioeconomic disadvantage confers risk for less adaptive learning-related behaviors at school entry, yet substantial variability in school readiness exists within socioeconomically disadvantaged populations. Investigation of neurophysiological systems associated with learning-related…

Full-term and preterm infants who had participated in studies of cross-modal and intramodal transfer at 12 months of age were seen at older ages to assess the predictive validity of these early measures for later cognition. (Author)

Studied 1,1621 adults to determine whether psychometric tests would retain equivalent factor structures among samples widely differing in age. Results confirmed configural invariance for all subsets, but did not establish complete or incomplete metric invariance for any set. (RJC)

Studied 622 adults and 211 undergraduates to determine the relationship of perceptual speed and speed of marking psychometric answer sheets to individual differences in performance on psychometric tests. Findings suggest strong relationships between age, speed, and intelligence-test performance. (RJC)

This commentary details a number of problems with the study design and data analysis reported by Finkel et al. The commentary also provides suggestions for more fruitful approaches for analyzing data from such studies in the future. (Author/BC)

A sequential-touching task was used to investigate whether 14-month-old infants can rapidly change how they categorize a set of objects, recognizing new groupings of objects they had previously categorized in a different way. When presented with a collection of objects that could be categorized by shape (balls vs. blocks) or material (soft vs.…

Examines interrelations among measures of memory in order to determine whether individual differences in 8- to 11-year-old children's performance on learning and memory tasks may be attributable to a general strategic factor. (CM)

Studied the relationship between mental age and progression toward Piaget's stages of concrete operations and formal operations in a sample of middle class children. Formal operations in preadolescence and adulthood are discussed in relation to IQ. (GO)

Black children (N=233) from three age levels and two socioeconomic (SES) levels were given five Piagetian tasks to determine if differences in sex were associated with differences in cognitive development levels. Results showed that higher SES children performed better than lower SES children on all five measures of reasoning, seriation,…