During communication, conversational partners should offer as much information as is required and relevant. For instance, the statement "Some Xs Y" is infelicitous if one knows that all Xs Y. Do children understand the link between speaker knowledge and utterance strength? In Experiment 1, 5-year-olds (N = 32) but not 4-year-olds…

The development of perspective taking was explored in kindergarten and second grade children using a referential communication task. (BRT)

Examined in 4 experiments 3- and 4-year-olds' ability to communicate about containment and proximity relations. Found that when describing where a toy mouse was hidden, children were more likely to successfully disambiguate a small landmark when it was in, rather than next to, the large landmark. Three-year-olds initiated searches faster when the…

Two studies were conducted with a task allowing detailed examination of how information in stimulus arrays is captured in children's descriptions. How children select information and the role of modeling are dealt with. (Author/SB)

Argues for a developmental account of social information-gathering ability, one that is consistent with the larger body of evidence concerning sociocognitive abilities in infants and young children. Notes that little is known concerning when and how young children acquire this important skill. (MDM)

Reviews evidence that gesture provides access to information children know but do not say. Argues that gesture may contribute cognitive change indirectly, by communicating spoken aspects of the learner's cognitive state to potential change agents; and directly, by offering the learner a simpler way to express and explore ideas that may be…

Compared comprehension of novel communicative signs to assist 2.5- and 3-year-old humans, chimpanzees, and orangutans find hidden objects during a hiding-finding game. Found that children at both ages performed above chance with all signs. No ape performed above chance for any signs not known before the experiment despite three times as many…

An experiment demonstrating that children in Piaget's preoperational stage, who generally still cannot give conceptually correct answers to questions about rate and time, evidence an ability to imitate a given rate-time relationship demonstrated by the experimenter. (ST)

Examines the communication strategies adopted by people of differing ages attempting to perform a referential communication task and to determine their ability to adapt their strategies to various task conditions. (HOD)

Examined relationships between quality of center-based child care and infant cognitive and language development. Subjects were 79 African American 1-year-olds. Found that quality of infant care positively correlated with scores on standardized assessment of cognitive development, language development, and communication skills. Quality of care in…