This replication study negates Bruner's finding that older subjects (age 15 and adult) understand the mathematical concept of ratio as exemplified by comparing judgments of fullness in pairs of glasses differing in height, diameter, and water volume. Weaknesses in Bruner's design and procedure that explain the discrepancy between the two studies…

The effects of imagery on children's learning of verbal materials is reviewed. Paired associate learning is emphasized, with some discussion of recall, recognition, visual discrimination and prose learning. Visual versus verbal images, elaborated versus unelaborated stimuli, induced images, and physical manipulation of learning materials are…

Evidence is provided for gradual age (and, seemingly, cognitive developmental) changes in the acquisition of complex problem solving strategies. Differential performance as a function of exposure to a child-model exhibiting the best strategy also suggests the role of learning in strategy acquisition. (Author/MV)

As an example, two aspects of children's conservation are explained: decalages and the shift from perceptual to quantitative cues. This approach, relative to structuralist formulation, involves cognitive factors such as prior learning, as well as impinging social experience. It is compatible with Piaget's theory, yet simpler and more flexible. (CP)

Presentation of a "natural experiment" problem situation to fourth, sixth, and eighth graders and college students revealed that not until adolescence could subjects isolate alternative or additive causes in a multivariable situation. (JMB)

Delay of gratification and temporal span were investigated in 58 girls, ages 4 to 9 years, by estimated story durations, delay of gratification in a direct choice money test, and reproduction of a 60-second interval. (BD)

Kindergarten, first and second grade children participated in a study of the development of conservation of equality and inequality. (BD)

Two experiments showed that: 5- and 6-year-old listeners have difficulties with spatial reference if it includes "left" and "right"; and 7-year-olds understand this limitation on the comprehension skill of younger children and make appropriate allowances by using more landmarks instead. (CB)

Two studies examined the relation between current developmental levels, as estimated by IQ, and proximal levels of development, as estimated by the efficiency of learning and transfer in assisted contexts. Subjects were 8- to ll-year-old children. Theoretical and clinical implications are discussed. (HOD)

Extends and replicates the 1948 Soviet study by Istomina that examined the age at which children use deliberate strategies to aid recall and the effect that task context has on remembering. Subjects were 3- to 7-year-old children. Istomina's results were not replicated in this study. (HOD)

Explores age differences (6 to 22 years of age) in conceptions about the nature of the skills required by verbal and nonverbal (abstract) intelligence tests. (HOD)

Two studies examined second- through fifth-grade children's negative-item bias with responses to the Self Description Questionnaire and how it is related to cognitive development and reading achievement. Results showed that younger children and poorer readers responded less appropriately to negative items, thus biasing the interpretations of their…

Reviews and integrates several aspects of peer interaction in the infant/toddler period. Reveals convergence between age-related changes in social skills and similarly timed cognitive developments. (HOD)

Tested 32 4-year-olds and 32 6-year-olds for free and cued recall following either play-and-remember or sort-and-remember instructions and assessed them for their metamemory of the efficacy of conceptual and perceptual sorting strategies. Younger children recalled more items under sort-and-remember, whereas no recall differences were found for the…

Examines whether elementary school children relate to the "harmful hidden message" about nuclear war in Dr. Seuss's THE BUTTER BATTLE BOOK. After ascertaining the children's cognitive level, they participated in activities to find hidden meanings in stories, including Seuss's book. Students failed to identify the nuclear war message in…