Infants' visual fixations were monitored while they viewed predictable and unpredictable sequences of stimuli. Analyses of anticipatory fixations indicated that by two months of age, infants form expectations for the reappearance of visual stimuli positioned opposite to each other. By three months, infants rapidly form expectations for asymmetric…

Used an event-based approach to study the nature of coordination in 3- and 6-month olds during interaction with their caregivers. Found that infants coordinated their vocalizations and facial actions more than expected by chance. When two communicative events were temporally associated across modalities, one event tended to be embedded within the…

Examined performance of first through sixth graders on conditional-inference task, using causal conditionals and a generation of alternatives task. Found a steady age-related increase in uncertainty responses to two uncertain logical forms and an increase in production of disabling conditions for "modus ponens." Individual differences in inference…

Evaluated role of visual input during reaching and grasping. Found that both infants and adults completed a reach and grasp to a darkened object but used vision when object remained visible. Infants contacted the object more often when it remained visible, although with longer durations and more movement units. Adults reached faster and more…

Examined relation between friendship and social competence in Head Start preschoolers. Suggested that number of reciprocated friendships was associated with social competence. Found having nonreciprocated friendships was not a liability; there was a trend toward participating in reciprocated friendships from age 3 to 4; and number of reciprocated…

Three experiments compared infants' reactions to videos of normally responsive women varying in eye contact. Found that, relative to frontal faces, three-month olds smiled less at images averting head and eye (H&I), head alone (H), and closing eyes (ECL) but not at averting eyes (E). Five-month-olds smiled less at H&I, E, and ECL but not…

Short-term longitudinal study compared influence of 6th, 8th, and 10th graders' closest friends (CF) and friendship groups (FG) on cigarette and alcohol use. Results showed that CF influenced initiation of cigarette and alcohol use. Only FG use predicted transition into current cigarette use. Only CF use predicted transition into current alcohol…

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…

Investigated the construct validity of the Coopersmith Self Esteem Inventory, using approximately 1500 elementary school students. Also investigated grade level differences in preadolescent and adolescent children. (Author/ED)

Describes the development and testing of an objective measure of moral development, based on Kohlberg's moral stages. (DP)

Studied the relationship between mental age and progression toward Piaget's stages of concrete operations and formal operations in a sample of middle class children. Formal operations in preadolescence and adulthood are discussed in relation to IQ. (GO)

A 5-trial social-conditional reasoning task was administered to 80 children between the ages of 3 and 6 years. The results indicated that by 4 years of age children are able to reason from a premise to its logical conclusion in reasoning about the probable behavior of others. (JMB)

Involving 82 preschool children and grade 2 students, a study was conducted to (1) determine whether heart rate, facial, and self-report indices could be used to differentiate between different vicariously induced negative emotional states; (2) examine developmental differences in the degree of differentiation; and (3) assess the pattern of…

Describes four experiments conducted among adults and 3- to 7-year-olds to validate a task analysis that indicates that the equality, group enhancement, and superiority social decisions require a greater information processing load than the altruism, rivalry, and individualism social decisions. (HOD)

Demonstrates the usefulness of the inclusion paradigm as a methodological tool in providing information about the conceptual breadth of selected social and nonsocial superordinate categories in children who exhibit some degree of inclusion logic. (HOD)