The interrelationship between the Autism Diagnostic Interview-Revised (ADI-R), Autism Diagnostic Observation Schedule-Generic (ADOS-G) and clinical classification was studied in 184 children and adolescents with Mental Retardation (MR). The agreement between the ADI-R and ADOS-G was fair, with a substantial difference between younger and older…

It is generally accepted that Attention-Deficit/Hyperactivity Disorder (ADHD) results from a dysfunction of the central nervous system, which has led to a commonly held belief that environmental factors play little role in the behavioural problems of children identified as having ADHD. Therefore, the two studies reported in this article…

The present research assessed the ability to attend to relevant information in the presence of irrelevant distraction in hyperactive (H), learning disabled (LD), and unselected (US) children. A total of 20 LD, 20 H, and 20 US children divided into younger and older age groups participated in the study. Younger children were between 94 and 104…

The study examined whether an awareness that semantic organization is beneficial to picture recall ("semantic enhancement") precedes an awareness that certain types of organization are more beneficial than others ("levels of processing"). A series of pilot studies was conducted with kindergarten and adult subjects and a formal…

An incidental memory paradigm was used to study involuntary encoding processes and voluntary retrieval strategies in children's memory. Subjects were 16 preschool children and 16 kindergarten children. (Author/MP)

This study examines the development of children's understanding of temporal cycles and the relationship between cyclic concepts and cognitive development. A sample of 62 children, ranging in age from 4 to 10 years, were administered Piagetian tests of classification and seriation and a variety of specially designed cyclic tasks. (Author/JMB)

Investigated the development and fragmentation of categories over chronological and mental age without the requisite of free recall. Kindergarten, fourth grade, ninth grade and retarded students labeled and categorized chromatic slides of picturable objects. (GO)

Comparison of the free recall of learning-disabled (N=24) and non-disabled (N=24) eight- and ten-year-old readers during directive and nondirective encoding conditions found that both groups recalled more semantically- than nonsemantically-organized items. Learning-disabled readers preferred to encode categorically-organized items nonsemantically…

Preschool children's awareness of distinctions between animate and inanimate objects was assessed by showing stimulus films of animate and inanimate objects that moved in different ways. Results indicated that five- and some four-year-olds performed near adult levels, whereas three-year-olds did not, although the animate-inanimate distinction did…

In a schematic concept formation task, second and fifth graders were required to sort 60 computer-generated, 8-sided polygons into two classes. The results indicated that age differences in schematic concept formation are due more to the efficiency of information use than to differences in strategy or the selection of information to be used. (ST)

One hundred sixty sibling pairs from two child families were sampled for sibling interaction behaviors as they relate to measures of categorization style. The study provides additional evidence of the importance of a child's siblings to his cognitive development. (Editor/RK)

Study compared the relative power of the Taxonomic, Semantic Differential, and Sense Impression categories in the recall behavior of children. (Authors)

Multiple classification refers to the combination of the common attribute of one class with the common attribute of another class such that the multiple class is defined by the simultaneous presence of both attributes. (Authors)

Purpose of the study was to evaluate the effectiveness of a hierarchically arranged instructional program in multiple classification, which refers to the ability to define a class by two or more attributes simultaneously. (Authors/MB)