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)

Demonstrates that a mother's perceptions of and behavior toward an infant can be influenced by knowing whether the infant was born prematurely or full-term. Differences in maternal behavior arising from this knowledge appear to produce differences in the infant's behavior. (HOD)

Considers three questions: Do mothers of siblings show consistency in behavior to their children when observed with each child at 24 months? What stability is there in behavior of mothers toward their children from 12 to 24 months? Are sibling status or genetic factors related to differences between mothers in relative consistency or inconsistency…

Conducted a meta-analytic review of 41 studies to explore the relation between children's aggressive behavior and hostile attribution of intent to peers. Found a significant association between hostile attribution of intent and aggressive behavior, with larger effects associated with more severe aggressive behavior, rejection by peers as a…

A path model of genetic and shared family environmental transmission was fitted to general cognitive ability data from 1-, 2-, 3-, and 4-year-old adopted and nonadopted children and their parents to assess the etiology of longitudinal stability from infancy to early childhood. (HOD)

Mothers were interviewed periodically over the first six years of their same-sex twins' lives and were asked to contrast them on specific behaviors. Intrapair contrasts were moderately stable across age spans for as long as 18 through 36 months. Genotypic similarity was apparently associated with intrapair similarity in emotionality and…

Considers areas of consensus from commentaries, including the value of an evolutionary perspective and the utility of exploring variations in physical activity play. Examines areas of debate, including the nonplay-play distinction, functions of rough-and-tumble play, and the opportunities of juveniles for exercise training. Calls for more directed…

Examines the conceptual basis of preschoolers' judgments regarding cross-gender behavior, taking into consideration the type of sex-role regularity and whether it is male or female sex-role stereotype. (HOD)

Tested infants in their second year with a box task to determine whether they would show a hand preference in solutions involving complete differentiation of roles for the two hands. (HOD)

Implication of findings for designing an introductory mathematics curriculum are discussed. (Authors)

Provides an overview of a longitudinal, prospective, multivariate adoption study of behavioral development and discusses the results of analyses of cognitive measures and environmental assessments as examples of the types of information that can emerge from a design of this sort. (Author/RH)

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)

Assessed, at 8-10 months, children's restraint and attention, and at 13-15 months, compliance to mother, internalization of her prohibition, and quality of motivation of the mother-child teaching context. Found support for view of compliance and noncompliance as heterogenous: committed compliance was higher to maternal "don'ts" than…

Describes two measures of gender salience, one assessing the use of the gender dimension in classifying new information and the other assessing its use in making affiliation choices. The developmental course of gender salience from age three to age seven and the relation between salience and sex-role development were examined. (HOD)