Two experiments compared preschoolers' awareness of knowledge transitions involving behavioral changes to those involving vocabulary or general knowledge changes. Found that children tended to report they had learned something new when novel information was behavioral (e.g., counting in Japanese) and tended to claim prior knowledge when the novel…

Three studies of how workers construct knowledge associated with vocational practice were examined within a framework classifying dispositions as interest, attitudes, and values. Findings suggest that dispositions are rooted in individual history and participation in communities of practice and that consideration of how cognitive structures…

Notes two faulty aspects of the Reznick et al., twin study (PS 526 688): the expressive language measure at 14 months, which has practically no spread of item difficulty, as well as measures included to assess specific cognitive characteristics; and the notion of infant transition as it affects interpretation of the results. (HTH)

Two studies investigated development of infants' visual preferences for the human body shape. Results indicated that 18-month-olds had a reliable preference for scrambled body shapes over typical body shapes in line drawings, while 12- and 15-month-olds did not respond differentially. In condition using photographs, only 18-month-olds had reliable…

Three experiments investigated effects of complexity on 2- to 6-year-olds' understanding of a beam balance. Found that 2- to 4-year-olds succeeded on problems that entailed binary relations, but 5- and 6-year-olds also succeeded on problems that entailed ternary relations. Ternary relations tasks from other domains (transitivity and class…

Presents implications for consideration by community, parents, educators, and policymakers if guided by the recommendations of the final report on the "Early Years Study" by McCain and Mustard. Cautions against an overemphasis on brain development during the early years and against viewing children as capital for social policy purposes.…

This study examined preschoolers' performance on an observation task and a search task involving the invisible displacement of an object. Findings indicated that in the observation task, there was significantly longer looking to impossible than to possible outcomes among all children. Most 3-year-olds, but significantly fewer 2.5-year-olds,…

Examined the effect of experience on children's use of video-presented information. Found that after seeing themselves "live" on their family television for 2 weeks, 2-year-olds reliably used a live video presentation of an adult hiding a toy to find the toy in an object-retrieval task. Most also transferred what they learned to a task…

Nine experiments examined 6- to 10-month-olds' formation of an abstract category representation for "between." Findings indicated that older, but not younger infants, could form an abstract category representation for "between" when performing in an object-variation version of the between categorization task. Six- to…

An ecological method was used to assess the patterns of goal-directed behaviors of eight children with autism and eight chronological and mental age comparable children with Down syndrome. Analysis of quantitative and qualitative behavior coding indicated that children with autism exhibited shorter and less overlapping goal-directed behaviors,…

This article summarizes proposed benefits of children's play and critically reviews the empirical evidence which supports or refutes the explanatory model. It concludes with suggestions for future research to explicate more fully the developmental benefits of play for the child. (JD)

This article suggests that a Piagetian approach to education of the deaf can be applied to understanding what occurs as a deaf child comes to a point of knowledge. The article reviews current research on the relationship between language acquisition and cognitive development, and applies this research to education of deaf children. (Author/JDD)

The study compared the performance of 30 blind Chinese children in Taiwan, 34 blind Indian children, and 40 sighted Chinese children on 8 conservation tasks. Although both groups of blind children performed considerably poorer than sighted children, those blind children with considerable experience handling tangible materials performed better than…

Students from the fifth, eighth, and eleventh grades were asked to describe their ideal self-image. Analyzed according to 19 categories (such as occupation, marriage, and physical appearance), the responses revealed differences according to gender, age, cognitive-developmental level, and socialization experience. (DM)

Reviews the literature concerning play theories. Classifies play theories into three categories: classical theories, early twentieth century theories, and recent theories. Theories discussed include psychoanalytic, cognitive development, arousal, communication, and adaptive plasticity. (RJC)