Two experiments tested predictions from a theory in which processing load depends on relational complexity (RC), the number of variables related in a single decision. Tasks from six domains (transitivity, hierarchical classification, class inclusion, cardinality, relative-clause sentence comprehension, and hypothesis testing) were administered to…

This study examined the hypothesis that age-related increases in reasoning ability are associated with the ability to represent relations of increasing complexity, defined as the number of entities related. The study's purpose was to determine the extent to which this ability to process relations with three entities increased between ages 4 and 8…

A study investigated how young children understand natural kind terms by examining how 3- and 4-year-olds rely on category membership to draw inductive inferences about objects. One hundred four children (53 girls and 51 boys) from six preschools in California and Michigan participated in the study. The children were shown 10 sets of pictures of…

A study investigated whether very young children use the concept of mutual exclusivity to make an initial link between a word and an object, and whether its use is linked to age or intelligence differences. Three groups of normally-developing children, aged 1 to 3 years, and three groups of older, mildly retarded children with similar levels of…

Modification of mother-child instructional interaction was examined in relation to specific tasks and the age of the child. Thirty-two mothers taught their 6- or 8-year-old children one of two laboratory classification tasks resembling a home or a school activity. The home task involved putting grocery items on shelves in a mock kitchen, and the…

The differences in performance on a variety of cognitive measures were studied in 67 learning disabled (LD) and normal elementary school children. Younger and older Ss were administered tests of conceptual sorting, central and incidental learning, and selective attention. Teacher ratings of classroom hyperactive behavior were also examined. LD Ss…

The consistently inferior performance of economically disadvantaged children led to this study designed to investigate how cognitive development changes with age and how it is affected by previous life experience. Classification behavior and inferential thinking were the main concerns of the study. The measurement instrument was the Matrix Test, a…

Kindergarten, fourth-grade, and tenth-grade subjects were shown pictures representing combinations of high and low inter-item association and high and low category relatedness. Results support a hypothesis that young children cluster in recall as a function of associations while older individuals show organizational flexibility which serves to…

Assessed through two studies the organization and basis for preschool children's (n=240) and adults' (n=60) categorization of emotions. In one, children and adults chose facial expressions that exemplify emotion categories such as fear, anger, and happiness. In another they grouped emotions differing in arousal level or pleasure-displeasure…

Depending on age and the demands of the task, people may use different processing strategies in object categorization. Three-year-olds used a wholistic approach with strong effects of object typicality on three categorization tasks. Older children and adults showed differential effects of typicality, suggesting various strategies including…

A four-part taxonomy was used to analyze first-, third-, and fifth-grade children's ability to throw and to anticipate the position of a target. The children's performances were assessed under conditions in which both the thrower and the target were stationary, both were moving, and one was moving and the other stationary. (Authors/PP)

Examined children's beliefs about the origins of gender differences and age-related changes in these beliefs. Findings suggested that young children may have an early bias to view gender categories as predictive of essential, underlying similarities between members but later come to acknowledge the role of other causal mechanisms in shaping how…

The two reports compiled here are intended as aids in evaluating and planning future educational efforts for handicapped students in New Jersey. The reports include a census of handicapped pupils, their programs, the service delivery personnel and special education due process cases for the 1980-81, 1981-82, and 1982-83 school years. Each report…

Two experiments which investigated the young child's ability to deal with multiplicative classes and relations (considered behavioral indices of concrete operations thought) in double series and cross class matrices are described and discussed. In the initial study, 160 children from preschool through grade 2 received six matrix subtasks…

Students in grades K, 1, 3, and 5 were administered the Rod and Frame Test (RFT), the Matching Familiar Figures (MFF) Test, and the Piagetian tasks of Discontinuous Quantity, Class Inclusion, Multiplication of Classes, and Multiplication of Relations. Cross-sectional trends were found in all tasks with older children being less impulsive, more…