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21.
Justin M. Nelson Lindsey K. McIntire Chuck Goodyear Craig Walters 《Military psychology》2015,27(6):335-347
Military personnel endure rigorous and demanding man-hours designated to monitoring and locating targets in tasks such as cyber defense and Unmanned Aerial Vehicle (UAV) operators. These tasks are monotonous and repetitive, which can result in vigilance decrement. The objective of the study was to implement a form of noninvasive brain stimulation known as transcranial DC stimulation (tDCS) over the left frontal eye field (LFEF) region of the scalp to improve cognitive performance. The participants received anodal and cathodal stimulation of 2 mA for 30 min as well as placebo stimulation on 3 separate days while performing the task. The findings suggest that anodal and cathodal stimulation significantly improves detection accuracy. Also, a correlation was detected between percent of eye closure (PERCLOS) and blinking frequency in relation to stimulation condition. Our data suggest that tDCS over the LFEF would be a beneficial countermeasure to mitigate the vigilance decrement and improve visual search performance. 相似文献
22.
This study examines whether people use the general implicit theories of creativity or not when applying them to themselves and others. On the basis of the actor–observer asymmetry theory, the authors propose that conception of creativity would be differently constructed depending on the targets of attention: general, self, and other. Three studies attempted to examine this hypothesis. In the preliminary study, a measure was developed to assess the characteristics that describe general creativity. In Study 1, exploratory and confirmatory factor analyses found the conceptual factors of general creativity. In Study 2, the common and specific factors of general, self, and others’ creativity concepts were compared through invariance tests. As a result, it was revealed that the invariance test failed, which means that the general conception of creativity may not be applicable to monitor self and others’ creativity in a consistent way. Implications and limitations of this study are discussed at the end of the study. 相似文献
23.
We examined the effect of perceptual training on a well-established hemispheric asymmetry in speech processing. Eighteen listeners were trained to use a within-category difference in voice onset time (VOT) to cue talker identity. Successful learners (n=8) showed faster response times for stimuli presented only to the left ear than for those presented only to the right. The development of a left-ear/right-hemisphere advantage for processing a prototypically phonetic cue supports a model of speech perception in which lateralization is driven by functional demands (talker identification vs. phonetic categorization) rather than by acoustic stimulus properties alone. 相似文献
24.
A modified proactive interference paradigm was developed to investigate encoding and memory processes in preschool-age children. The buildup and release from proactive interference in preschool-age children parallels that of adults and of mentally retarded persons, indicating that very young children and older people may use many of the same encoding dimensions. 相似文献
25.
Marc A. Lindberg 《The Journal of genetic psychology》2013,174(3):269-280
Two cuing, free-recall studies were conducted to test Bach and Underwood's (1970) hypothesis that acoustic encoding is dominant among second graders and semantic encoding is dominant among sixth graders. When retrieval cues were presented with to-be-remembered items at both input and output (Experiment 1), and when cues were presented only at output (Experiment 2), semantic cues were more efficient in elevating recall than were acoustic cues for both second and sixth graders. When these and other results generally found using recognition, sorting, incidental learning, and free-recall experimental designs are compared, it seems plausible that item presentation and memory-testing formats interact with age, and that these factors account for the different patterns of attribute dominance found in the literature. The knowledge base cannot be understood by focusing on either subject or task analyses, but only by focusing on interactions between subject and task variables as they change over time. The educational implications for young grade-school children are discussed. 相似文献
26.
The aim of the present study was to evaluate the usefulness of Barkley’s (1997a) model of inhibition and executive functioning in describing the deficits associated with Attention Deficit Hyperactivity Disorder (ADHD). Besides group differences, the present study addressed the question of independent effects of inhibition and the other executive functions in discriminating between children with ADHD and controls and how well, in terms of sensitivity and specificity, these measures can classify the children into the correct group. The results showed that children with ADHD differed significantly from controls with regard to measures of inhibition as well as all other executive function measures, except repetition of hand movements. In logistic regression models, three different measures tapping inhibition, working memory and emotion regulation were shown to be significant independent predictors of group membership. The sensitivity for these three variables as a set was 76.2, the specificity was 90.5, with a total of 86% of the sample correctly classified. When excluding the parental rating of emotion regulation, the overall classification rate decreased some, but was still relatively high in comparison with previous studies within this area of research. 相似文献
27.
Maria Yassa 《Scandinavian Psychoanalytic Review》2013,36(2):134-135
The increasing discourse of the concept of intersubjectivity in modern psychoanalysis has pushed the interest in the intrapsychic and its emphasis on drive and object into the background. Authors who wish to avoid a one-sided focus on intersubjectivity usually subscribe to a dual dimensional approach, taking both perspectives into account. In this article, the analytic situation is described not in two, but in three dimensions, the analytic function constituting a third dimension necessary for the interplay between the other two dimensions. Focusing on the analyst's position, the author presents a model that consists of (1) the-analyst-as-subject, (2) the-analyst-as-function, and (3) the-analyst-as-object. The analytic function is understood to be invested with a particular form of desire and it is argued that the asymmetry between this desire of the analyst and the desire of the analysand is a central characteristic of the analytic situation. 相似文献
28.
Prior research has demonstrated that semantic organization in the right hemisphere (RH) is more diffuse and specialized for distant semantic associates than is semantic organization in the left hemisphere (LH). The present research explored individual differences in this regard. If the RH is more specialized for distant semantic associates, then individuals with a more active RH should display greater activation of distant semantic associations. Two experiments were conducted to examine this issue. In both studies a line bisection task was used to assess arousal asymmetry. In Experiment 1, greater RH activation was associated with the ability to generate remote associates to three word stimuli. In Experiment 2, relatively greater RH activation was associated with enhanced priming of distant semantic associates. Taken together, these experiments demonstrate that arousal asymmetry is an individual difference variable that is related to variability in semantic organization and retrieval. 相似文献
29.
Most health decision-making models posit that cost-benefit analyses underlie decisions to make changes in health-related behavioral practices. In a series of studies, participants imagined either increasing or decreasing the frequency of a variety of health behaviors and estimated the consequences of those changes. In Studies 1 and 2, individuals consistently estimated that increasing a health behavior produced greater consequences than did decreasing the behavior by an equivalent amount. The results of Study 3 demonstrated that this effect is due to differences in how individuals judge the impact of health behavior changes which involve not engaging in the behavior at all versus other types of changes. Taken together, these findings suggest that perceptions of the outcomes afforded by health behavior changes depend on both the behavioral frequency and direction of changes in behavior an individual is considering. This asymmetry has the potential to help explain patterns of behavior in a range of important health domains and may impact the effectiveness of behavior change interventions. 相似文献
30.
Anne Petit Thierry Constans Karl Mondon Frédéric Andersson Danièle Perrier-Palisson Aurélie Marqué 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(5):620-631
ABSTRACT Introduction: The aim of this study was to evaluate whether the classic asymmetry seen in hemispheric functioning is modified in older adults by using a verbal-manual concurrency task. Method: Thirty-five right-handed participants divided into two groups according to age (15 older participants, mean age: 68 ± 8 years, without cognitive decline and 20 younger participants, mean age: 23 ± 2 years) had to perform a 30-second uni-manual tapping task, in both a single task (tapping alone) and dual task (tapping and performing a letter fluency task together) condition. Results: In younger participants, the letter fluency task disrupted the right hand more than the left hand whereas, in older participants, the letter fluency task disrupted both hands equally. Conclusion: These results should be considered preliminary data using a behavioral dual task condition, which might be useful for studying lateralized hemispheric functioning and the processes of divided attention during aging. 相似文献