Thirteen 4-year olds were asked to arrange dolls in order from largest to smallest. Longitudinal observations over six months revealed five approaches to ordering and four approaches to correction. The "method of extremum" was employed later in development; otherwise, the order in which approaches appeared was highly variable, with many…

Three degrees of cognitive processing were tapped by four problem types when 60 children between four and eight years were administered a set of geometry tasks differing in complexity. Analysis revealed that the tasks differed in difficulty, task success was related to age, and a hierarchical sequence existed among the skills. (SKC)

In order to study developmental and task-related factors in ability to coordinate two dimensions, a simple multiplicative relations matrix task was presented to 51 children in kindergarten and grades 1 and 2. (MS)

Explored whether there are changes with age in understanding the specific distinction between natural and human-made phenomena and whether an appreciation of this distinction influences children's beliefs about the possibility of altering or transforming different categories of objects. Found that this distinction, a powerful organizer for adults,…

Profiles typical characteristics and behaviors of kindergartners. Highlights physical development, including energy and growth, motor development, physical activities, and health; mental development, including Piagetian stages, academic development, mental limitations, and effective classroom rewards; and psychosocial development, including…

Profiles typical characteristics and behaviors of first graders. Highlights physical development, including energy and growth, motor development, physical activities, and health; mental development, including Piagetian stages, academic development, mental limitations, and effective classroom rewards; and psychosocial development, including…

Profiles typical characteristics and behaviors of second graders. Highlights physical development, including energy and growth, motor development, physical activities, and health; mental development, including Piagetian stages, academic development, mental limitations, and effective classroom rewards; and psychosocial development, including…

Profiles typical characteristics and behaviors of third graders. Highlights physical development, including energy and growth, motor development, physical activities, and health; mental development, including Piagetian stages, academic development, mental limitations, and effective classroom rewards; and psychosocial development, including…

Profiles typical characteristics and behaviors of fourth graders. Highlights physical development, including energy and growth, motor development, physical activities, and health; mental development, including Piagetian stages, academic development, mental limitations, and effective classroom rewards; and psychosocial development, including…

Profiles typical characteristics and behaviors of fifth graders. Highlights physical development, including energy and growth, motor development, physical activities, and health; mental development, including Piagetian stages, academic development, mental limitations, and effective classroom rewards; and psychosocial development, including…

Profiles typical characteristics and behaviors of sixth graders. Highlights physical development, including energy and growth, motor development, physical activities, and health; mental development, including Piagetian stages, academic development, mental limitations, and effective classroom rewards; and psychosocial development, including…