Examined whether young children can identify breaches of a permission rule and their sensitivity to the implications of such rules. Found that preschool children show considerable facility in reasoning about permission rules and can justify their choices. Results suggest that, when children violate a permission rule, they do so knowingly. (MOK)

Investigated the ability of three- and four-year-old children to perform tasks which require matching sets of sounds to numerically equivalent visual displays. Findings indicated that three-year-olds performed at the level of chance on the auditory-visual matching task, but four-year-olds performed significantly above chance. (MOK)

Studied the sociocultural context in which Brazilian children acquire and use everyday mathematics in terms of currency use. Participants were 105 children, ages 4 to 11, and their parents. Found decreased use of currency with increasing age. Children also used currency to aid their problem solving and progressed from global estimates to the…

Examined 5- to 12-year-olds' judgment regarding the behavior of balance scales and other levers whose arms varied in a causal or a noncausal variable. Results indicated age-related increases in correct judgments about the influence of physical features of objects at an earlier age than about spatial relations between objects. (MOK)

Compared children's concept of illness with that of adults. Results suggested that both causes and symptoms of affected adults' categorization of illness, with neither type of feature being definitive. Children's ascriptions of illness generally matched adults' but were highly correlated with judgments of illness. Children also viewed illness as a…

Two experiments investigated whether children, averaging three years old, used a transition theory in their developing understanding of mind or whether their interpretation moved from a desire-focused theory to a mature theory that attributed a greater role to beliefs. Findings supported a transition theory interpretation over competing…

Examined the developing relationships between false belief understanding and an awareness of the individualized nature of personal taste as well as a maturing grasp of the interpretive character of the knowing process. Results indicated that the concept of interpretation appears to involve a more complex and significantly later arriving…

Examined children's understanding of false belief, representational change, and appearance-reality distinction. Subjects were 34 Junin Quechuan children, 4 to 8 years old. Findings indicated an understanding of the appearance-reality distinction and suggested an improvement with age. Children demonstrated poor understanding of representational…

Five experiments investigated whether children, ages three to eight, think of pretending as a mental state. Results indicated that most children under six see pretending as primarily physical. Eight-year-olds claimed that execution of pretense did not involve the mind, although the planning aspect of pretense did. (MOK)

Examined three- to five-year-old children's understanding of pretense and deception in folktales in which a villain deceived his victim by pretending to be someone else. Found that the three-year-olds were able to follow the pretense but were not able to grasp the false belief integral to the deception. (MOK)

Examined the types of play mothers introduce in direct response to their toddlers' play and the actual maternal play behaviors. Findings suggested that mothers tend to play with their toddlers in ways that might promote their children's development and that mothers with more knowledge about play development provide their children with…

Examined continuity, stability, and change in behaviors reflecting infant reactivity and regulation. Subjects were 100 infants of 5 and 10 months old. Found that infant behaviors during frustrating situations showed both change and continuity, but the relationship between reactivity and regulation changed in that both factors became more…

Investigated effects of depressed mothers' touching on their infants' behavior during still-face situation. Subjects were 48 mothers and their 3-month-old infants. Findings suggested that by providing touch stimulation for their infants, depressed mothers can increase infants' positive affect and compensate for negative effects often resulting…

Determined whether individual neonate characteristics could be detected and reliably measured in preterm infants. Results showed that preterms were highly self-consistent in their reactions to stimuli from neurobehavioral assessments. Highly reliable individual differences among infants were also seen. Individual consistencies and differences in…

Measured the neurobehavioral integrity of Irish infants and maternal alcohol consumption and cigarette smoking. Subjects were 127 primiparous mothers. Results demonstrated significant cry effects on infants of heavily drinking mothers, supporting the conclusion that newborn infants show functional disturbances in the nervous system resulting from…