In this study the authors investigated whether children demonstrated the "underconfidence-with-practice" (UWP) effect. This effect is a highly robust metacognitive illusion in which adults become underconfident in their memory performance when asked to predict their memory for the same items across multiple study-test trials. One…

Twenty-four studies were included in this systematic review of vocabulary research literature. The review corroborates the findings of past studies that several strategies have emerged that increase students' vocabulary knowledge. Findings further reinforce the National Reading Panel's recommendations regarding the context and magnitude of studies…

This study was undertaken to determine the relative contribution of age, sex, and three stimulus features (board shape, block arrangement, and block shape) to perceptual accuracy on 39 board/block adaptations of Piaget's three-mountain task. (Author/SB)

The problems examined in this study were (1) age differences in grasp of psychological causality during middle childhood, (2) the exploration of possible mediating abilities of a physical-logical nature accounting for such age differences and (3) relations between cognition of psychological causality and intentionality in moral judgment.…

This study investigated children's conceptions of death from a developmental perspective. Subjects were 170 children from grades K-4. Children were tested for conservation and interviewed, following story presentations about an elderly woman's death, to assess their understanding of three concepts concerning death: irrevocability, cessation of…

This paper is a working draft of a study which has examined the accumulated research on child growth and development. The draft is designed as an input paper to enable the Marin Social Studies Project to refine its rationale and criteria for a recommended K-12 social studies program of curriculum options. Identification of the capabilities of…

A total of 180 6-, 8-, and 10-year-old children participated in tasks employing an object array in which the views from the experimental positions were objectively of equal difficulty. (SB)

Perceptual counterparts of a series of conservation of length tests were presented to subjects who were categorized as conservers or nonconservers conservation of length pre-tests, and to conservers and nonconservers given conservation length training. Perceptual performance of the untrained nonconservers was significantly worse than that of the…

Examined the influence of both peer and adult models who displayed either consistent, conflicting, or inconsistent moral judgments on the moral judgments and explanations of first graders. The influence of rationale provision was also assessed. (Author)

In a study of charitable behavior, 187 kindergarten through sixth grade Caucasian boys and girls were given the opportunity to share candy with children (1) described as similar to them, (2) with children described as dissimilar and needy, or (3) with both. (BD)

Cross-lagged correlational analyses and multiple-regression analyses of the data collected in these two studies supports the causal model that, while intentionality and internality both emerge when a common cognitive construct develops, heightened internality also significantly enhances a child's ability to learn intentionality. (Author/JMB)

Frequency of aggression in 5- to 8-year-old children was examined in relation to frequency of helping, comforting and sharing. Subjects (39 boys and 40 girls attending a summer day camp) were each observed for two hours and their aggressive and prosocial behaviors recorded. This study differed from previous investigations of this issue in two…

This document reports the results of two studies performed to determine the effectiveness of special lessons in facilitating the attainment by children of the basic concept "tree." The first study, which utilized 103 fifth-grade students, also investigated the effects of pretesting. Results showed no significant effects of pretesting and…

Eighty first and third graders were presented one of two brief videotaped social interactional episodes. Half viewed an unambiguous tape in which affective response was congruent with situational context; the other half viewed an ambiguous tape in which nonverbal affective response was incongruent with situational context. (MS)