Between 6 and 9 years of age, children's free associations shift from syntagmatic to paradigmatic relationships. "Syntagmatic relations" are words that are syntactically adjacent, thematically related ("summer-vacation"), or both; "paradigmatic relations" are words from the same grammatical class, taxonomic category…

HIV-exposed uninfected (HEU) children during the preschool and early school ages may be at-risk for neurodevelopmental challenges due to in utero and perinatal exposure to HIV and/or antiretroviral (ARV) medications. HEU children and HIV-unexposed uninfected (HUU) children from the community were recruited and tested at 3 to 4 and 5 to 6 years of…

Interference control is central to cognitive control and, more generally, to many aspects of development. Despite its importance, the understanding of the processes underlying mean interference effects across development is still limited. When measured through conflict tasks, mean interference effects reflect both the strength of the initial…

It is often argued that metacognition includes 2 components: monitoring and control. However, it is unclear whether these components can operate independently, or whether they always operate as part of a hierarchy. The current study attempts to address this issue. In Experiment 1 (N = 90), age-related differences were assessed to examine the…

Differentiation of intelligence refers to changes in the structure of intelligence that depend on individuals' level of general cognitive ability (ability differentiation hypothesis) or age (developmental differentiation hypothesis). The present article aimed to investigate ability differentiation, developmental differentiation, and their…

The present study examined development-related differences in saccade curvature during a goal-directed saccade task in the presence of distracting visual information. Participants were individuals who ranged in age from 6 to 30 years. Consistent with previous findings, all participants showed curvature toward the distractor stimulus at shorter…

P. M. Greenfield's new theory of social change and human development aims to show how changing sociodemographic ecologies alter cultural values and learning environments and thereby shift developmental pathways. Worldwide sociodemographic trends include movement from rural residence, informal education at home, subsistence economy, and…

Developmental contextualism focuses on changes in fused relations between developing people and their changing contexts. Research on cognitive training in the aged years provides evidence about plasticity throughout life because it alters developmental trajectories through revised person-context relations. The studies in the current issue support…

Two studies investigated the maintenance of focused attention in the first five years of life. Findings revealed changes over age in the way children concentrate and sustain attention spontaneously during free play. Results point to possible developments underlying the increasing duration of focused attention. (RH)

Three experiments examined the early development of three- to five-year-old children's analysis of spatial patterns. Found that the youngest children segmented out simple, well-formed, spatially independent parts and used simple relational structures to bind these parts together, whereas older children constructed forms that included increasingly…

Outlines themes from L.S. Vygotsky's writings. His claims about the social origins of individual mental functioning have implications for the definitions of cognition and memory and for the pursuit of research on mental processes. His understanding of culture is derivative of his account of the mediation of mental functioning. (BC)

Criteria for defining event-frequency encoding as automatic were assessed in two experiments involving young children, college students, elderly, and mentally retarded persons. The first experiment used an online word-frequency task; the second used a study-test method with pictures as stimuli. (PCB)

This longitudinal study with 62 children and adolescents examined the validity of the consolidation/transition model in the context of moral reasoning development. Results of standard statistical and Bayesian techniques supported the hypotheses regarding cyclical patterns of change and predictors of stage transition, and demonstrated the utility…

Examined analytic methods for describing children's social risk. Found that the individual-risk-variables approach provided better overall prediction of developmental outcomes at a particular age. The risk-factor approach provided good prediction of developmental trajectories with moderate to large sample sizes. The risk-index was useful for…

Investigated developmental patterns of cognitive performance over first 3 years of life in sample of 762 low birthweight premature children. Intelligence test scores were obtained at 12, 24, and 36 months adjusted age. Five developmental patterns were identified. Results reveal patterns of cognitive development can be discriminated by three…