Six types of remedial projection slide programs were tested on male students (n=120) who showed difficulty in visualizing rotation from molecular diagrams. There were no significant differences in improvement of understanding which were dependent on the number of remedial diagrams. However, when slides contained multicolored diagrams, which were…

This study investigated the speed of encoding and rotation of images during simple spatial rotational operations to discover any similarities or differences in groups of differing spatial ability. This project was subdivided into five basic subproblems. First, research was done to arrive at a simple, easily testable information processing model…

Differences in learning processes were studied in more versus less intellectually able undergraduate students. Thirty subjects were selected to represent a wide range of general and mathematical reasoning abilities, based on the following test scores: Necessary Arithmetic Operations and Vocabulary Test V2 from the Educational Testing Service ETS…

Focuses on whether 9- and 12-month-old infants understand that an object has been deleted from its initial hiding place as part of its displacement to a new location. (Author/NH)

Four experiments investigated three- and four-year-old children's knowledge of projective size-distance and projective shape-orientation relationships. Results indicated that preschool children's understanding of these relationships seems at least partly cognitive rather than wholly perceptive, providing further evidence for the acquisition of…

Concepts important to cognitive development in children can be classified according to several levels. At level 1, concepts are equivalent in structural complexity to binary relations and univariate functions. At level 2, concepts are equivalent to compositions of binary relations, binary operations, and bivariate functions. At level 3, concepts…

Two experiments tested the assertion that development of quantitative knowledge follows a U-shaped course with an early stage of conservation based on functional significance. Tested three age groups of children from three to six years. Results suggest the assertion is unwarranted and reveal that performance in younger children is best interpreted…

This article reports on a study of the spatial mapping skills of two totally blind, two visually impaired, and eight normally sighted children. Children were asked to point to familiar locations in and around their homes. Results suggest that blindness interferes with the development of spatial knowledge in which Euclidean directions between…

Evaluates some possible reasons for the occurrence and eventual correction of children's naming errors in an experiment in which two-, four-, and six-year-olds learned two artificial object names in succession. (HOD)

Examines reasons for sex-related differences among adults on horizontality and verticality concepts. Studies the effects on task performance of inadequate knowlege of relevant physical phenomena and pictorial examples. (Author/AS)

Reanalyzes data from a study in which 42 fifth graders received training in map-drawing skills. Explores the relationship between the mixture of reasoning levels and developmental change, and compares findings with those of an earlier study of social reasoning. (CB)

Explores the relations among combinatorial capacities in language, symbolic play, blockbuilding, and nonsemantic action sequences within a sample of 18- to 24-month-old children, as well as assessing the developmental level of a selected subset of concepts. (HOD)

This research explores the moment-by-moment understanding students exhibit in the learning of a non-physical science domain--the human circulatory system. The goal was to understand how students learn by capturing the nature of their initial mental models (naive conceptions), and by seeing how new information gets assimilated into their mental…

Describes two experiments that examined children's understanding of the distinction between real and apparent emotion. Discusses the findings in relation to research concerning children's concept of mind, their grasp of the appearance-reality distinction; their ability to produce complex, embedded justifications; and their ideas about emotion.…

Describes three experiments that tested autistic children's nonverbal and verbal categorization abilities. Concludes that autistic children do not suffer a specific cognitive deficit in ability to categorize and form abstract concepts. (HOD)