A study compared 84 readers with learning disabilities, chronologically age-matched and reading level-matched, for the children's working memory performance for phonological, visual-spatial, and semantic information under initial, gain, and maintenance conditions. The working memory deficits of readers with learning disabilities were hard to…

To study the effects of Metacognitve Reading Program on Reading achievement and metacognitive strategies of students with cases of dyslexia, the author conducted a single-case quasi-experimental. The conceptual framework of the study was based on the theories of cognitive processes stating that metacognition helps regulate the flow of information…

Background: The Towers of London (TOL) and Hanoi (TOH) have been viewed as equivalent measures of planning and/or problem solving, although recent evidence in adults suggests that the underlying measurement characteristics of these two tasks may differ. As tower tasks are one of the few instruments that can be used to assess executive functioning…

In 3 experiments, participants saw lists of 16 words for free recall with or without a 6-digit immediate serial recall (ISR) task after each word. Free recall was performed under standard visual silent and spoken-aloud conditions (Experiment 1), overt rehearsal conditions (Experiment 2), and fixed rehearsal conditions (Experiment 3). The authors…

TgCRND8 mice represent a transgenic mouse model of Alzheimer's disease, with onset of cognitive impairment and increasing amyloid-[beta] plaques in their brains at 12 weeks of age. In this study, the spatial memory in 25- to 30-week-old TgCRND8 mice was analyzed in two reference and one working memory Morris water maze (MWM) tests. In reference…

The impact of a previously successful or unsuccessful experience on the subsequent acquisition of a related task is not well understood. The nature of past experience may have even greater impact in individuals with learning deficits, as their cognitive processes can be easily disrupted. Mice with a targeted disruption of the [alpha] and [delta]…

The recently published fourth edition of the Wechsler Intelligence Scale for Children (WISC-IV) represents a considerable departure from previous versions of the scale. The structure of the instrument has changed, and some subtests have been added and others deleted. The technical manual for the WISC-IV provided evidence supporting this new…

The present work investigated cognitive, linguistic and narrative abilities in a group of children suffering from Duchenne Muscular Dystrophy, an allelic X-linked recessive disorder caused by mutations in the gene encoding dystrophin. The patients showed mildly reduced IQ with lower Verbal than Performance Intelligence Quotient and were mildly…

Undergraduate students who were given specific instructions to form mental images while reading a text passage containing spatial information scored significantly higher than the control group on a drawing posttest. Significant correlations also resulted between the test scores and both reading time and use of imagery. The use of imagery…

An interview protocol was devised to determine whether demands on working memory are reduced by the use of drawn or telegraphic formats. Students were chosen because some aspect of their group testing on presentation formats was provocative (e.g. high spatial score, but low reading comprehension score; high drawn score and low verbal score, etc.).…

This investigation of cognitive effort begins with a review of cognitive principles relating to memory and graphic encoding of information. The cognitive framework described allows explanation of improved memory due to reparsing of graphic representations. It also provides the basis for optimizing graphical material design to insure best retention…

In recent research, two qualitatively different classes of mental operations have been identified. The performance of one type of cognitive task requires attention, in the sense of mental effort, for its execution, while the second type can be performed automatically, independent of attentional control. Further research has shown that automatic…

An overview is provided of the principles of cognitive psychology that can be used to enhance the effectiveness of computer-assisted instruction (CAI). First, the paper looks at the features of classical and operant conditioning that provide the foundation for important parts of mastery learning and CAI programs. Next, findings from four areas of…

Prompted by current theories in reading suggesting that variation in word knowledge affects the processing of not only individual words but also clauses and sentences, this report explores some different ways in which children's comprehension processes may be affected by variation in word knowledge. The report first examines whether the effects of…

A study examined the nature of the schematic processes for a story presented in television, text, and radio form and for a story presented to above average and average readers. The story was parsed according to J. M. Mandler and N. S. Johnson's story grammar. Schematic processing was inferred from the pattern of node memorability for the different…