Two experiments were conducted to study the development of mental rotation abilities in late childhood, adolescence, and adulthood. Subjects were third, fourth, and sixth graders, and college students. (MP)

The effect of the sensory discriminability of targets from nontargets on depth of nontarget processing was examined. Depth of nontarget processing was measured by semantic overlap between targets and nontargets, reaction time, and nontarget recall. Depth of processing decreased as sensory discriminability increased, supporting multiple-loci…

Differences in storage and rehearsal components of the phonological loop and visuo-spatial sketchpad were investigated in individuals with (n=19) and without (n=21) intellectual disability matched on memory span. Those with intellectual disability had specific difficulty in the rehearsal component of the phonological loop. Groups did not differ in…

The theory that the rationality characteristic of the intellectual tasks performed by scientists is linked to the ways they organize their professional lives is extended to science teaching. It is proposed that the forms of rationality typical of scientists' thinking may be irrelevant or even invalid in the college classroom. (MSE)

Identifies the cognitive skills necessary for children to accurately comprehend projective size on television. Traces the acquisition of these skills and identifies the role of media experience in facilitating comprehension by assessing the extent to which different types of television fare require the use of different cognitive skills. (MS)

Two experiments examined the development of children's memory for spatial location or color. Results refuted the proposal that in contrast to color, spatial location would not show developmental improvement because it is remembered automatically. Suggests that, for the age range studied, there was developmental change in the efficiency of…

Discusses approaches to the problem presented in understanding consciousness as a yet undiscovered process of interacting neuron activity. Presents the historical context of research in the area of human awareness and identifies research necessary to scientifically explain how the brain relates to the mind. (MCO)

This study compared the phonological awareness ability of 11 children (ages 6-8) with persistent phonological impairment to that of 11 phonologically normal children. Phonologically normal children scored higher on three of the four phonological awareness measures, with no differences on word recognition. Speech intelligibility was a significant…

Examined 3 aspects of construct validity of Expectations about Counseling-Brief form (EAC-B): whether it measures expectations about counseling rather than other constructs, whether test items are clearly understood, whether test maintains respondents' attention. Analyzed cognitions of 30 undergraduates to determine which thought processes were…

Investigates two problems: (1) do learning effects accrue in accuracy or response time when computerized tests are administered in two sessions? and (2) what are the effects of tonal pattern order and contour types on average item difficulty and length of response time for children with different levels of achievement? (DSK)

The verbal overshadowing paradigm was used with 167 undergraduates to determine whether performance across all items on Raven's Advanced Progressive Matrices was dependent on the same cognitive processes. Results clearly indicated that a subset of items was dependent on visuospatial processes, while another subset required verbal-analytic…

Two experiments examined developmental changes in reasoning about intensive quantities--predicting mixture intensity of pairs of liquids with different intensities of red color. Results showed that cognitive averaging in this domain developed late and slowly. Predominating up to 12 years was an extensivity bias, a strong tendency to use rules that…

This review aims to create a cross-disciplinary framework for understanding the perception of control. Although, the personality trait locus of control, the most common measure of control perception, has traditionally been regarded as a product of social learning, it may have biological antecedents as well. It is suggested that control perception…

The articles in this collection consider one very interesting puzzle of development: U-shaped developmental functions. At some point during development, an organism might exhibit what seems like a regression from its expected developmental trajectory and, according to continuity models of development, this is aberrant. In this special issue,…

Prior research (DeLoache, Uttal & Rosengren, 2004) has documented that 18- to 30-month-olds occasionally make scale errors: they attempt to fit their bodies into or onto miniature objects (e.g. a chair) that are far too small for them. The current study explores whether scale errors are limited to actions that directly involve the child's…