Guided by evolutionary-developmental models, this study tested the hypothesis that children's exposure to parental relationship instability, defined by initiation and dissolution of caregiver intimate relationships, has both costs in cognitive impairments and benefits in enhanced learning skills. Participants included 243 mothers and their…

Language is rife with ambiguity. Do children and adults meet this challenge in similar ways? Recent work suggests that while adults resolve syntactic ambiguities by integrating a variety of cues, children are less sensitive to top-down evidence. We test whether this top-down insensitivity is specific to syntax or a general feature of children's…

In the current study, based on a sample of 1,873 adolescents between 11.4 and 20.9 years of age from the first 3 waves of the National Longitudinal Study of Adolescent Health, we investigated the longitudinal effects of future orientation on levels of and developmental changes in problem behaviors, while controlling for the effects by impulsivity;…

Tested the generalizability of the specificity model of environmental action to the domain of mastery motivation in infants. Found that the specificity model successfully predicted that aspects of the environment uniquely related to dimensions of mastery motivation, and that infant sex and temperament mediated the relation of environment to…

Prior work suggests that active experience affects infants' understanding of simple actions. The present studies compared the impact of active and observational experience on infants' ability to identify the goal of a novel tool-use event. Infants either received active training and practice in using a cane to retrieve an out-of-reach toy or had…

Second-, fourth-, and sixth-grade children were tested on a multiple-classification task to investigate the relationship between age and observational learning. (Editor)

Magnitude is assumed to be represented along a holistic mental number line in adults. However, the authors recently observed a unit-decade compatibility effect for 2-digit numbers that is inconsistent with this "holisticness" assumption (H.-C. Nuerk, U. Weger, & K. Willmes, 2001). This study used the compatibility effect to examine whether the…

Findings of the present experiment reveal that discrimination processes play an influential role in nonreinforced imitation in severly retarded children. (WY)

In this study involving 32 first graders, results indicated that imitative learning was accomplished and translated into action by a two-step process of informational analysis involving abstraction and subsequent inference. (Author/WY)

Introduces the time window, a construct that characterizes when and how the integration of knowledge occurs, which is fundamental to the development of cognition. Describes the characteristics of time windows, evidence supporting them, factors that affect them, research illustrating their generality, and theoretical and applied implications. (ET)

Describes connectionist model showing exclusivity asymmetries when categorizing visual stimuli, similar to pattern shown by infants. Examines asymmetries in terms of an associative learning mechanism, distributed internal representations, and statistics of feature distributions in the stimuli. Details test of model with infants, finding that…

Results of this study demonstrate that constraint-seeking conceptual strategies can be trained in children as young as 6 years of age. (Authors/CB)

The effects of a common dimension within a model's performance on different aspects of observational learning were examined in two experiments. Subjects were 220 second-grade children. (Author/MP)

Examines the research of Morgan, Bonamo, and Travis (1995) to detect the effects of recasted error correction on children's emerging grammar. Notes that regression procedures used by Morgan and others could not discriminate between the data generated by models in which recasts totally determined grammatical learning, supplemented other learning,…