Tested competing causal models concerning the relationship between children's social behaviors and theory of mind in 3- and 4-year-olds tested 3 times over 7 months. Found that false belief performance predicted joint planning and role assignment during pretend play, after taking into account initial performance on joint planning and role…

Two experiments used Visual Expectations Procedure to investigate development of expectations in infants up to 12 months old. Reaction time improved and the percentage of anticipations increased between 6 and 9 months using an alternation pattern or a complex pivot pattern, and between 4 and 8 months when using a left-right alternation or a…

Two experiments related structure of a task to underlying cognitive mechanisms. Found that 3-year olds were no better at predicting behavior from partially true beliefs than from entirely false beliefs. Three- and 4-year olds, and autistic children had distinct performance profiles across tasks. Concluded that conceptual foundations for a…

Considers the nature and developmental functions of physical activity play. Distinguishes three kinds of physical activity play with consecutive age peaks: rhythmic stereotypies, exercise play, and rough-and-tumble play. Considers gender differences and function in terms of immediate and deferred consequences in physical, cognitive, and social…

Used head-mounted eye-tracking system to study kindergartners' and adults' moment-by-moment language processing ability as they responded to spoken instructions. Found that 5-year-olds did not take into account relevant discourse/pragmatic principles when resolving temporary syntactic ambiguities and showed little/no ability to revise initial…

Examined how Japanese 2- and 4-year-olds assigned meaning to novel nouns associated with familiar and unfamiliar animals and inanimate objects. Found that in the absence of useful information from syntax, the 2-year-olds were able to fast map a noun to its meaning by elegantly coordinating word-learning biases and other available sources of…

Discusses the importance of modeling, hints, and other information contexts for providing a link to establishing new problem-solving strategies for toddlers and older children. Discusses the use of the microgenetic approach for yielding valuable information about strategic development despite the lack of availability of verbal reports. Suggests…

Examined in six experiments toddlers' use of syntactic cues to learn proper names and count nouns. Found that by 24 months, both girls and boys were significantly more likely to select a labeled object if they had heard a proper name than if they had heard a count noun. At 20 months, neither girls nor boys demonstrated this effect. (Author/KB)

The development of the "inversion" effect in face processing was examined in infants 3 to 6 months of age by testing their integration of the internal and external features of upright and inverted faces using a variation of the "switch" visual habituation paradigm. When combined with previous findings showing that 7-month-olds use integrative…

Constructivist physical education emphasizes cognitive engagement. This study examined the impact of a constructivist curriculum on in-class physical activity. Caloric expenditure in metabolic equivalents (MET) and vector magnitude count (VM) data from a random sample of 41 constructivist lessons were compared with those from a random sample of 35…

This study examined the relationship between the structure of narrative and false belief understanding in young children. A group of 109 children between 38 and 63 months were randomly assigned to one of two groups. Children in the first group watched a story on video, while children in the second group shared the same story in book format. The…

Investigated the general relationship between children's performance on social and physical measures of cognitive functioning, possible sex differences in performance on the two types of tasks, and the relationship between boys' and girls' performances on these tasks and age and IQ. (SDH)

An extensive literature review of the cross-cultural generalizability of the concepts derived from differentiation theory which focuses on the major proposition of the theory and its primary empirical expectations. Studies conducted in other cultural settings which were either guided by the theory or sought to evaluate it are discussed and…

In two phases, this study examined age-related changes in children's knowledge about two familiar domains and how these domains are organized in permanent memory. Forty 5-year-olds and 40 7-year-olds from a small academic community generated exemplars from the animal and cartoon character domains and provided information about sets of animals and…

Two experiments with 167 first-, third-, and fifth-grade children revealed age-related changes in the composition of natural categories. Categorization was investigated via perceptual similarities of objects and conceptual similarities of superordinate classes. The free-classification paradigm (Garner, 1974) was adapted to natural categories,…