Presents data showing that the MacArthur Communicative Development Inventory's (CDI) large variability, lack of stability, and insufficient ability to predict early language delay are authentic reflections of individual differences in early language development rather than measurement deficiencies. Responds to critiques regarding sociodemographic…

Focuses on the conceptual implications of analyses of individual differences in francophone post-Piagetian research. Maintains that these analyses are preoccupied by the "American question" of measurement and method, instead of attempting a theoretical account of the issues raised by intraindividual and interindividual variability in…

Two studies examined models that preschoolers, fifth-graders, and adults use to guide predictions of self-beneficial, goal-directed action. Found that preschoolers' predictions were consistent with an animal-based model, fifth-graders' with biology-based and complexity-based models, and adults' predictions with a biology-based model. All age…

This study was designed to determine the extent to which (speech) motor timing control, as defined by a statistical model, improves in consistency with age and the degree to which peripheral feedback is used by children to maintain this consistency. Clinical applications and possible genetic implications are discussed. (Author/ED)

Investigated predominant kinds of parent-infant play and individual differences in play style. Participants were 24 families of healthy, full-term, firstborn infants, four boys and four girls at each of three ages: 7, 10, and 13 months. (RH)

Aimed (1) to determine whether a time sampling, frequency-count procedure for assessing mother-infant interaction could capture a set of theoretically important dimensions, and (2) to chronicle both ability and change within the mother-infant relationship. A total of 74 dyads were observed when infants were 1, 3, and 9 months of age. (Author/RH)

A total of 97 children three to seven years of age were identified as high-, medium-, or low-exploratory and participated in both independent sessions and 1 of 2 types of supportive sessions with an adult. Support consisted of either close attention by the adult to the child's exploration or modeling and direction by the adult. (Author/RH)

Boys who took credit for their academic successes and girls who accepted blame for their failures were those most likely to have higher grades and higher achievement test scores. (Author)

Data indicate that the interventions provided differed in their effectiveness in calming newborns to a highly significant degree. (Authors)

Explores particulars that may partially account for the remedial influence on development of interactions between infants and caregivers. Videotaped interactions between 20 prematurely born toddlers and their mothers were described in terms of dyadic joint attention to features of the environment. (Author/RH)

Reports two studies in which 12- to 13-year-old girls, half of whom were premenarcheal and half postmenarcheal, responded to pictures of infants. Concurrent assessments of interest in motherhood, cognitive sophistication about the relationship between menarche and childbearing, attitudes toward menarche, and sex-role self-image did not…

Subjects categorized as either players who displayed make-believe in natural free-play situations or nonplayers whose behavioral repertoires did not include make-believe, were exposed to either a free-play, an imitation or a problem-solving condition and given an alternate-uses test. Free-play enhanced associative fluency among players who engaged…

Used multilevel analyses to examined the amounts of time infants spent asleep, awake, content, feeding, fussing, and crying at 2, 6, 12, and 40 weeks of age. Found that day-to-day fluctuations accounted for between 44 and 53% of the variance in amounts of time sleeping, fussing, and crying. (MDM)

Offers a developmental perspective on research risk that emphasizes the idea that some risks to children decrease with increasing age; some increase as the child matures; some change in a curvilinear fashion; and some remain essentially stable. Suggests that researchers are in an optimal position to safeguard children's rights. (RH)