Infants exposed to a set of artificially-created face stimuli having distinct mean and modal prototypes showed a pattern of behavior predicted by category abstraction models. Infants appeared to abstract, at the time of learning, a feature-count summary of the category displayed. (Author/RH)

Two experiments investigated infants' use of structural relations in dividing schematic drawings of animals into categories. Results demonstrated subjects' sensitivity to structural information like that thought by Rosch (1978) to exist in the natural world and their ability to segregate items into categories on the basis of clusters of correlated…

Two studies tested young children to determine whether their collections of geometric figures would have graphic properties. A majority of three-year-olds constructed graphic collections, whereas five- and seven-year-olds constructed predominantly nongraphic collections. Increasing the number of dimensions on which the stimuli varied did not have…

Two experiments assessed the importance of form versus function in 2-year-old infants' categorizations. Nonsense objects were constructed to independently vary form and function. Adults differentially directed subjects' attention to one or the other stimulus dimension. It was hypothesized that children's conceptualizations would vary as a function…

Two experiments using the habituation-dishabituation paradigm examined infants' ability to form and retrieve a basic-level category. Results indicated that infants categorized when tested immediately and after a five-minute delay. (PCB)

The role of variation as a determinant of infant categorical responding was investigated in three studies of infants 7 to 7 1/2 months of age. Sixty-three infants, divided into groups of 21 each, were habituated to color slide poses of either one, two, or six different adult female faces. Their responses to a novel pose of a familiar face and a…

To provide a differentiated characterization of autistic children's logical deficits, a non-verbal, microanalytic method designed for infants and young children was used. Subjects were 12 autistic children ranging in age from 5 to 7 years and a control group of 12 normal children ranging in age from 23 to 30 months. Subjects were given two…

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…

Findings suggest that semantic knowledge for concrete objects is represented and organized in similar ways in autistic, retarded, and normal children. Previous findings on cognitive deficits in autistic children are more likely related to their inability to use cognitive representations in an appropriate and flexible manner. (Author/RH)

Examines how reference points for the categorical interpretation of high and low (adjectives) were defined by three- to five-year-old children and adults. Shows categorical interpretations of relative terms to be complex dependent. (HOD)

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)

The purpose of this research is to examine the factor structure of the Armed Services Vocational Aptitude Battery (ASVAB), Forms 8, 9, and 10. The ASVAB consists of ten subtests: General Science; Arithmetic Reasoning; Word Knowledge; Paragraph Comprehension; Numerical Operations; Coding Speed; Auto Shop Information; Mathematics Knowledge;…

An exploratory study of structured and unstructured play was conducted with a small number of severely disturbed and normal children 9 to 13 years of age. Specifically, the investigators characterized psychopathology from a cognitive-developmental perspective by focusing on the Piagetian "scheme" and its manifestation in the play and…

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)

A total of 41 preschool children, either 2 or 3 years of age, and their mothers were randomly assigned to two treatment groups: a microworld computer experience designed to teach the concept of inside/outside and an alphabet computer experience designed to drill ABC's. Videotapes of mother/child dyads were coded and scored using a revision of the…