Does valence play a role in children's sensitivity to and use of moral information in the service of selective learning? In the present experiment, we explored this question by presenting 3- to 5-year-old children with informants who behaved in ways consistent or inconsistent with sociomoral norms, such as helping a peer retrieve a toy or…

The present study aimed at modeling individual differences in a verbal learning task by means of a latent structured growth curve approach based on an exponential function that yielded 3 parameters: initial recall, learning rate, and asymptotic performance. Three cognitive variables--speed of information processing, verbal knowledge, working…

Preschoolers' causal learning from intentional actions--causal interventions--is subject to a self-agency bias. The authors propose that this bias is evidence-based, in other words, that it is responsive to causal uncertainty. In the current studies, two causes (one child controlled, one experimenter controlled) were associated with one or two…

Two experiments examined the origins of joint visual attention in 6- to 11-month-olds with a training procedure. Results indicated that joint visual attention does not reliably appear prior to 10 months; from about 8 months, a gaze-following response can be learned; and simple learning is not sufficient as the mechanism through which joint…

Examined the relation between developmental suggestibility effects and preschoolers' emerging ability to reason about conflicting mental representations. Subjects were 42 three- to five-year-olds. Found in the children significant initial encoding and ability to retrieve event details. Also found an integration between children's theory of mind…

Reviews the literature on the relation between early memory development and corresponding changes in brain development of infants. Finds that an adult-like form of explicit memory emerges between 8 and 12 months of age, drawing heavily on limbic and cortical structures. Offers theoretical perspectives for studying the ontogeny of memory. (JW)

Two experiments examined whether 40 infants would reenact what an adult did or intended to do: (1) infants observed an adult unsuccessfully attempt to complete 4 target acts; and (2) children observed a mechanical device tracing the adults' actions. Infants could infer adults' intentions and imitate target acts, suggesting that children can…

Two experiments explored the relationship between conceptual and procedural knowledge. Results revealed that fourth and sixth graders made computational errors even though they possessed conceptual knowledge. Fifth graders mastered conceptual knowledge before procedural knowledge. Results support the dynamic interaction theory. (BC)

Three studies of elementary school children's problem-solving procedures in intentional discrimination tasks are reported. Subjects were children selected from kindergarten and grades 2, 3, and 6. (Author/MP)

Investigated effects of object reinstatement on event recall by 6- and 9-year olds'. Subjects were interviewed either 10 days and again 10 weeks after an event, or only 10 weeks after an event. Interviewing included free recall, prompts, and questions. Found that age, delay, and object reinstatement all affected amount and accuracy of recall. (JW)

Examined age- and schooling-related influences on memory and phonological segmentation skills of 19 children who missed and made the school-entry cutoff date in a given year. Tested recall ability, short term memory strategies, and phonological awareness. Found that growth of memory skills and strategies, particularly short term, is primarily a…

Examined the effects of print exposure on growth of declarative knowledge and vocabulary in 133 college students and 49 elderly adults. Compared groups on two general knowledge tasks, vocabulary, working memory, syllogistic reasoning, and print exposure. Found that exposure to print was a significant predictor of declarative and vocabulary…

Examined the extent to which maternal linguistic input enabled children to use syntactic bootstrapping. Studied uses of 25 common verbs in speech of 57 mothers to their 1-year olds and 2-year olds. Found that verbs can be used to create informative syntactic frames, syntactic frames can cue appropriate verb class, and multiple syntactic framing…

Used observations and home visits to examine sex differences in language ability of 54 disadvantaged children at risk for poor language outcomes. Found that language difficulties increased over time, boys were at a constant disadvantage to girls in language development, and sex difference in language ability appeared even when families had similar…