Background: In the last decades, children's understanding of mathematical principles has become an important research topic. Different from the commutativity and inversion principles, only few studies have focused on children's understanding of the addition/subtraction complement principle (if a - b = c, then c + b = a), mainly relying on verbal…

New technologies enable flexible combinations of text and interactive or non-interactive pictures. The aim of the present study was to investigate (a) whether adding pictures to texts is generally beneficial for learning or whether it can also have detrimental effects, (b) how interactivity of pictures affects learning, (c) whether the…

Psychological research shows that learning can be powerfully enhanced through testing, but this finding has so far been confined to memory tasks requiring verbal responses. We explored whether testing can enhance learning of visuospatial information in maps. Fifty subjects each studied 2 maps, one through conventional study, and the other through…

Spontaneous recovery from extinction is one of the most basic phenomena of Pavlovian conditioning. Although it can be studied by using a variety of designs, some procedures are better than others for identifying the involvement of underlying learning processes. A wide range of different learning mechanisms has been suggested as being engaged by…

Introspective experiences that nine University of Tulsa (Oklahoma) faculty members (aged 29-52 years) have when acquiring cognitive skills without awareness were studied as they acquired nonconscious knowledge about a pattern of stimuli. Nonconsciously acquired knowledge was automatically used to facilitate performance, without conscious…

Comparison of external memory strategies in 31 children (ages 11 and 17) with mild mental retardation and 64 children without mental retardation found no differences between children with mental retardation and their age peers in frequency of use of object-oriented strategies. For all groups, external strategies were used more frequently than…

Describes two experiments which examined how supplementing specific practice experiences with variable practice experiences influenced motor skill retention. Participants received varying trials of acquisition practice on a criterion force production task. Acquisition practice with variations of the criterion task led to better retention than…

Reports three experiments with kindergartners and first graders which used one-trial multidimensional reasoning tasks like those of Toppino (Journal of Experimental Child Psychology, v30, p496-512, 1980). Feedback information and preliminary experience with simple forms of the task produced high performance levels, and verbal labeling in the…

The polysialylated neural cell adhesion molecule (PSA-NCAM) has been implicated in activity-dependent synaptic remodeling and memory formation. Here, we questioned whether training-induced modulation of PSA-NCAM expression might be related to individual differences in spatial learning abilities. At 12 h posttraining, immunohistochemical analyses…

Much research has focused on cognitive skills in isolation from daily life and from action. However, memory and thinking in daily life are not separate from, but are part of, doing. This study is based on a theoretical framework that encompasses an integrated account of mind in action. This "activity theory" holds that neither mind as such nor…

Do our memories remain static during sleep, or do they change? We argue here that memory change is not only a natural result of sleep cognition, but further, that such change constitutes a fundamental characteristic of declarative memories. In general, declarative memories change due to retrieval events at various times after initial learning and…

Discusses research on cognitive styles and strategies. Groups labels into two principle styles. Describes the wholist-analytic style, examining whether an individual tends to process information in wholes or parts, and the verbalizer-imager style considering whether an individual is inclined to represent information during thinking verbally or in…

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…

Nonverbal communication in the classroom can produce subtle nonverbal influences, particularly in the affective domain. In Suggestopedia, double-planeness (the role of the environment and the personality of the teacher) is considered an important factor in learning. Suggestopedic teachers are trained to use nonverbal gestures in their presentation…

This paper presents a historical overview of visualization as a human problem-solving tool. Visualization strategies, such as mental imagery, pervade historical accounts of scientific discovery and invention. A selected number of historical examples are presented and discussed on a wide range of topics such as physics, aviation, and the science of…