It was hypothesized that the concept of cognitive effort in memory is both useful and important. Cognitive effort was defined as the engaged proportion of limited- capacity central processing. Four experiments were conducted, and the implications and potential applications of the concept were discussed. (Author/MH)

One hundred eighteen college students studied a passage as a knowledge map or as traditional text. Half studied already color-coded material, and half color coded the material themselves. Results support effectiveness of knowledge maps and indicate the role of test anxiety in mediating outcomes associated with demanding tasks such as color coding.…

This article examines the relationship of cognitive processing and creativity and argues that educational interventions contribute to the development of creative thinking skills when they provide requisite knowledge structures and stress controlled application of these processes in solving progressively more complex problems. (DB)

This study compared 24 adult stutterers and 24 nonstutterers for response initiation and completion times on manual task conditions varying as to decision complexity. It was concluded that response planning and organization deficits in stutterers are independent of decision complexity but related to spatial and temporal coordination. (Author/DB)

Switching between tasks produces decreases in performance as compared to repeating the same task. Asymmetrical switch costs occur when switching between two tasks of unequal difficulty. This asymmetry occurs because the cost is greater when switching to the less difficult task than when switching to the more difficult task. Various theories about…

This study sought to investigate whether the abnormally small P3 amplitudes observed in pervasive developmental disorder (PDD) are related to differences in processing capacity. PDD children and adolescents and their control groups participated in the study. Visual probe stimuli were presented during an auditory task with two levels of difficulty.…

Based on a previously validated cognitive processing model of reading comprehension, this study experimentally examines potential generative components of text-based multiple-choice reading comprehension test questions. Previous research (Embretson & Wetzel, 1987; Gorin & Embretson, 2005; Sheehan & Ginther, 2001) shows text encoding and decision…

Prior exposure to drugs of abuse has been shown to occlude the structural plasticity associated with living in a complex environment. Amphetamine treatment may also occlude some cognitive advantages normally associated with living in a complex environment. To test this hypothesis we examined the influence of prior exposure to amphetamine on fear…

To understand the difficulties that many students have with comprehension of mathematics, we must determine the cognitive functioning underlying the diversity of mathematical processes. What are the cognitive systems that are required to give access to mathematical objects? Are these systems common to all processes of knowledge or, on the…

This study explored the perceptions of 304 teacher education students regarding how effectively and meaningfully their instructors use the "Microsoft PowerPoint" presentation software program in their teaching and compared graduate and undergraduate students' perceptions to determine the extent to which graduate and undergraduate teacher educators…

This paper covers an experiment designed to investigate the relationship between the didactical setting and learning effects with animations. We investigated whether the cognitive load imposed by animations could be reduced when the students could control the flow of the animation. We did not find an effect due to the fact that the students did…

Although the use of hypertext systems for learning complex knowledge has been attracting recent attention, there have been few discussions in the hypertext literature on issues related to the cognitive prerequisites for learning conceptually demanding material. A study was conducted to investigate a theory-based hypertext learning environment that…

Cognitive-based approaches to social and personality psychology have studied the structure of trait constructs in memory. The bipolar view of traits suggests that the activation of a trait construct such as "hostile" should be associated with the simultaneous activation of its semantic opposite "kind." The unipolar view, in…

Investigated were the role of mental imagery in children's logical reasoning and individual differences in children's use of imagery while reasoning. Fifth grade students assessed as being high imagers (HIS) and low imagers (LIS) completed conditional syllogisms of various kinds and were asked, after each of their responses, whether an image had…

The task consisted of categorizing a set of slides depicting concepts of freedom, nonfreedom, justice, and nonjustice. The results of the analysis indicated that abstract thinkers performed significantly better than did concrete thinkers and that performance increased as a function of grade level. (Author/BJG)