Describes a study which used a discrimination-learning procedure to compare the ability of language-disordered and normal children to modify hypotheses. In a series of two-dimensional learning set and orthogonal problems, all children reached learning set criteria quickly; on orthogonal problems, language-disordered children performed…

Apparently contradictory findings regarding the locus of information processing differences between retarded and nonretarded persons were discussed. (Author)

A total of 45 fifth grade students were the subjects of an experiment offering support for a component of learning strategy (memory imagery). Various theoretical explanations of the image-tracing phenomenon are considered, including depth of processing, dual coding and frequency. (MS)

This paper presents a study of children's abilities to make inferences about an actor's plans and to use these inferences to assign blame and praise. Preschool children were presented with eight stories combining good and bad intentions with final outcomes that were either intended or accidental (foreseeable or unforeseeable side effects). Results…

Two experiments investigated the role of children's spontaneous conceptual "biases" in pictorial discrimination learning. The results suggested that such biases may serve either to facilitate or to interfere with discrimination learning. Moreover, in each experiment, age by treatment interactions revealed that in comparison to the behavior of…

The purpose of this study was to determine if children given spatial relationship training had learned a definition and/or conceptualization of "in front" which was limited to two distinctly different classes of objects functioning in a specific relationship. Twenty-one children who had completed the "in front" training were given three sets of…

Experiment conducted to determine the different effects of a mediational method of verbal learning and visual-discrimination verbal learning. (Author/MM)

Reports effects of context that are entirely perceptual. Visual discrimination was enhanced when line segments were flashed in a region that was perceived as a figure. Discrimination was substantially degraded when the same region was seen as ground although the physical stimulus remained identical throughout figure-ground reversals. (Author/JN)

Nurr1 expression is up-regulated in the brain following associative learning experiences, but its relevance to cognitive processes remains unclear. In these studies, rats initially received bilateral hippocampal infusions of control or antisense oligodeoxynucleotides (ODNs) 1 hour prior to training in a holeboard spatial discrimination task. Such…

This study of the effects of practice on children's perceptual judgments investigates the validity of the distinctive features hypothesis and the schemata hypothesis by comparing performance on discrimination tasks using familiar stimuli (letters of the alphabet) with a variety of transformations held constant over four massed practice conditions.…