首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
Using an individual differences approach, we evaluated whether manual and locomotor adaptation are associated in terms of adaptation and savings across days, and whether they rely on shared underlying mechanisms involving visuospatial working memory or visual field dependence. Participants performed a manual and a locomotor adaptation task during 4 separate test sessions over a 3-month period. Reliable adaptation and savings were observed for both tasks. It was further found that higher visuospatial working memory performance and lower visual field dependence scores were associated with faster learning in the manual and locomotor tasks, respectively. Moreover, adaptation rates were correlated between the 2 tasks in the final test session, suggesting that people may gradually be learning something generalizable about the adaptation process.  相似文献   

2.
    
Conflicting empirical and theoretical accounts suggest that dyslexia is associated with either average, enhanced, or impoverished high-level visuospatial processing relative to controls. Such heterogeneous results could be due to the presence of wider variability in dyslexic samples, which is unlikely to be identified at the single study level, due to lack of power. To address this, this study reports a meta-analysis of means and variances in high-level visuospatial ability in 909 non-dyslexic and 956 dyslexic individuals. The findings suggest that dyslexia is associated not only with a lower mean performance on visuospatial tasks but also with greater variability in performance. Through novel meta-analytic techniques, we demonstrate a negative effect size for mean differences (−.457), but a positive effect size for SD differences (+.118; SD ratio = 1.107). In doing so, this is the first study to demonstrate impoverished visuospatial processing of the majority of individuals with dyslexia in addition to greater variance in performance in this group. The findings advocate for further consideration of both the presence of, and reasons for, increased variance in perception, attention, and memory across neurodevelopmental disorders.  相似文献   

3.
李晴  陈安涛 《心理科学》2018,(6):1318-1324
视频游戏是一类需要借助视听设备并基于一定剧情进行操作的游戏。先前研究大多关注暴力视频游戏对攻击等负面行为的影响,但本文着重探讨视频游戏对个体认知能力的积极影响及内在神经基础,以辩证看待视频游戏对个体心理和行为的作用。本文对前人研究归纳梳理发现,视频游戏训练能使个体认知能力得到持久改善,同时论述了视频游戏中脑神经基础和奖赏预期对认知能力的调控作用。未来研究应在规范视频游戏训练技术的基础上,用其干预靶脑区以提升个体特定脑功能。  相似文献   

4.
    
We investigated the effect of age and color in a computerized version of the jigsaw-puzzle task. In Experiment 1, young and older adults were presented with puzzles in color and black-and-white line drawings, varying in difficulty from 4 to 9 pieces. Older adults performed the task better with the black-and-white stimuli and younger adults performed better with the color ones. In Experiment 2, new older and young adults identified the same fragmented pictures as fast and accurately as possible. The older group identified the black-and-white stimuli faster than those presented in color, while the younger adults identified both similarly. In Experiment 3A, new older and young groups performed the puzzle task with the same color pictures and their monochrome versions. In Experiment 3B, participants performed a speeded identification task with the two sets. The findings of these experiments showed that older adults have a memory not a perceptual difficulty.  相似文献   

5.
游戏是激发幼儿兴趣的有效载体,已有研究表明游戏可以提高幼儿自我控制的外显行为表现,但未考察是否能够引起幼儿自我控制相关的电生理变化。本研究将幼儿按班级随机分为实验组和对照组,实验组的幼儿接受一学期的游戏训练,对照组不参加训练,进行自由活动,训练前后所有幼儿完成Go/No Go任务的ERP测试,评定自我控制能力。结果发现:实验组后测中No Go任务的N2和P3成分(分别表示为No Go-N2和No Go-P3)平均波幅均显著小于前测,而对照组前后测波幅无变化;同时,后测实验组中No Go-N2平均波幅显著小于对照组。结果表明,游戏训练可促进幼儿自我控制相关大脑系统的发展,为自我控制游戏训练的效果提供了电生理证据。。  相似文献   

6.
鲁忠义  贾宁 《心理学报》2006,38(5):654-662
采用混合实验设计,以含有空间信息的语篇为实验材料,选取不同视空间工作记忆广度的大学生作为被试,利用新的实验范式分离了空间情境模型的建立过程和更新过程,对这两个过程在不同时间模式下的加工特点进行分析,考察了空间情境模型建立和更新的影响因素。研究发现:(1)视空间工作记忆广度影响空间情境模型的建立,但不影响空间情境模型的更新。(2)时间模式既影响空间情境模型的建立又影响空间情境模型的更新。(3)方位对空间情境模型的建立有显著影响,对空间模型的更新没有显著影响。在空间情境模型的建立和更新过程中,前后判断的准确性不易受限时的影响,而左右判断的准确性则易受到限时的影响而显著降低,前后方位效应具有稳定性和优势性  相似文献   

7.
    
Classic studies in cognition have demonstrated that the use of appropriate memory mnemonics can reliably increase recall performance. However, is the facilitative effect of mnemonics consistent across all individuals? As some mnemonics explicitly contain a large visuospatial component, does normal variance in visuospatial aptitudes predict the effectiveness of such strategy usage? To explore this question, participants who varied in visuospatial ability were asked to recall several lists of words, and either did or did not use a visuospatial mnemonic. Results indicated that effective mnemonic usage was directly dependent on participants' visuospatial ability, and those lower in visuospatial aptitudes actually produced lower recall performance when asked to use such a mnemonic. Similarly, those lower in visuospatial aptitude also reported that mnemonic usage made the task significantly more difficult. These findings suggest that individual differences in relevant cognitive abilities can influence the effectiveness of memory strategies commonly used to enhance recall.  相似文献   

8.
    
When spatial stimulus configurations repeat in visual search, a search facilitation, resulting in shorter search times, can be observed that is due to incidental learning. This contextual cueing effect appears to be rather implicit, uncorrelated with observers’ explicit memory of display configurations. Nevertheless, as I review here, this search facilitation due to contextual cueing depends on visuospatial working memory resources, and it disappears when visuospatial working memory is loaded by a concurrent delayed match to sample task. However, the search facilitation immediately recovers for displays learnt under visuospatial working memory load when this load is removed in a subsequent test phase. Thus, latent learning of visuospatial configurations does not depend on visuospatial working memory, but the expression of learning, as memory‐guided search in repeated displays, does. This working memory dependence has also consequences for visual search with foveal vision loss, where top‐down controlled visual exploration strategies pose high demands on visuospatial working memory, in this way interfering with memory‐guided search in repeated displays. Converging evidence for the contribution of working memory to contextual cueing comes from neuroimaging data demonstrating that distinct cortical areas along the intraparietal sulcus as well as more ventral parieto‐occipital cortex are jointly activated by visual working memory and contextual cueing.  相似文献   

9.
10.
    
The aim of this study was to specify whether cerebellar lesions cause visuospatial impairments in children. The study sample consisted of 40 children with low‐grade cerebellar astrocytoma, who underwent surgical treatment and 40 healthy controls matched with regard to age and sex. Visuospatial abilities were tested using the spatial WISC‐R subtests (Block Design and Object Assembly), Rey–Osterrieth Complex Figure, Benton Judgment of Line Orientation Test, PEBL Mental Rotation Task, and Benton Visual Retention Test. To exclude general diffuse intellectual dysfunction, the WISC‐R Verbal Intelligence IQ, Performance IQ, and Full‐Scale IQ scores were analysed. Post‐surgical medical consequences were measured with the International Cooperative Ataxia Rating Scale. Compared to controls, the cerebellar group manifested problems with mental rotation of objects, visuospatial organization, planning, and spatial construction processes which could not be explained by medical complications or general intellectual retardation. The intensity of visuospatial syndrome highly depends on cerebellar lesion side. Patients with left‐sided cerebellar lesions display more severe spatial problems than those with right‐sided cerebellar lesions. In conclusion, focal cerebellar lesions in children affect their visuospatial ability. The impairments profile is characterized by deficits in complex spatial processes such as visuospatial organization and mental rotation, requiring reconstruction of visual stimuli using the imagination, while elementary sensory analysis and perception as well as spatial processes requiring direct manipulation of objects are relatively better preserved. This pattern is analogous to the one previously observed in adult population and appears to be typical for cerebellar pathology in general, regardless of age.  相似文献   

11.
《周易》以"易道广大,无所不包"被称为"大道之源",古人往往把《周易》作为观察世界、理解世界的范式,用以解读现实事物。东汉班固首开以《周易》哲学思想解读围棋的先河,其后以"易"解"弈"者代有其人,形成了具有易学内涵的围棋义理。本文试图通过对《周易》哲学思想影响下围棋之道的剖析,揭示《周易》的现代价值及易学思想观照下的"围棋之道"对现代人的启示。  相似文献   

12.
旋转汉字识别的眼动特性   总被引:7,自引:0,他引:7       下载免费PDF全文
吴冰  孙复川 《心理学报》1999,32(1):7-14
该文以客观眼动测量方法考察了单个旋转汉字的识别和由旋转汉字组成的短文的阅读过程。对心理旋转操作在汉字辨认过程中的作用及其操作对象进行了探讨。  相似文献   

13.
Räty  Hannu  Vänskä  Johanna  Kasanen  Kati  Kärkkäinen  Riitta 《Sex roles》2002,46(3-4):121-128
This study was conducted to examine whether Finnish parents would endorse the the classic gender-related attribution pattern and explain their son's mathematical performance in terms of talent and their daughter's in terms of effort. In addition, we examined whether the pattern of attributions would be the opposite in regard to parental explanations of their child's reading performance. A group of parents (N = 486), both mothers and fathers, were requested to assess the level of competence of their 1st grader in mathematics and reading. The parents were also asked to recall events from their child's 1st school year in which the child succeeded and failed in mathematics and reading; they were then asked to evaluate the importance of talent, effort, and task to the child's outcomes. The parents of boys assessed their child's mathematical competence to be higher than did the parents of girls. Furthermore, the parents of boys rated talent as a more important reason for their child's mathematical success than did the parents of girls. In contrast, the parents of girls rated effort as a more important reason for their child's mathematical success. Although the girls were perceived to surpass boys in reading, the girls' positive outcomes in reading were explained by effort more than the boys' outcomes, and at the highest level of assessed competence, the boys' verbal talent was rated as a more significant cause of success in reading than the girls' verbal talent. In sum, our results suggested that in both mathematics and reading, girls were not entitled to ability-based attribution to the same extent as were boys.  相似文献   

14.
    
In polymorphic ants, such as Cataglyphis niger, sterile individual workers from the same nest show some degree of variation in size and/or morphology. We studied whether worker size and size difference between opponents had an effect on aggression during conspecific encounters. Although the capacity to recognize nestmates was shared by all individuals, some patterns of agonistic behaviors were size related. Escape was mostly displayed by the small workers, and threat, associated with ritualized fights, by the large workers. As game theory predicted, ants of C. niger adjusted their level of aggression as a function of the size of the opponent. However, only large individuals used such assessment strategies, responding with escalation of aggression towards small workers and reduction of aggression towards large ones. On the contrary, small individuals behaved in the same manner whatever the opponent's size. Differences between both morphological castes were discussed with reference to the resource holding assessment models. Aggr. Behav. 25:369–379, 1999. © 1999 Wiley‐Liss, Inc.  相似文献   

15.
ABSTRACT— Recent advancements in imaging methods and analysis approaches have provided important insights about the neural bases of object recognition. We address the potential limitations of standard functional magnetic resonance imaging (fMRI) and discuss methodological advancements, including fMRI-adaptation, pattern analyses, and high-resolution fMRI, that may be more appropriate for studying object and face representations. fMRI-adaptation and high-resolution fMRI measure responses of neural subpopulations within standard fMRI voxels, and pattern analyses examine the information in the distributed activations across voxels, which may differ from the mean response across these voxels. These methods have provided evidence for a multitude of representations across the human ventral stream that provide empirical constraints for cognitive theories of recognition.  相似文献   

16.
    
This paper investigated decision pattern analysis (DPA) as a general and standard framework for studying individuals' consistent decision making behavior within and between contexts. DPA classifies decisions on the basis of judgement accuracy and the goal orientation of the decided‐upon action. Over repeated decisions, patterns of individuals' decision behavior are described by five variables: competence, optimality, recklessness, hesitancy and decisiveness. A fictitious medical decision making test and three standard cognitive ability tests (extended with confidence ratings and a ‘submit answer for marking’ decision) were used to investigate the psychometric properties of these DPA variables. Internal consistency of the decision patterns ranged from good to excellent. Convergent validity was assessed via cognitive abilities, metacognitive confidence and a control criterion imposed on confidence that determines the decision to be made: the point of sufficient certainty. Personality variables were included to assess discriminant validity. As hypothesised, cognitive abilities showed positive correlations with competence and optimality. High confidence, low points of sufficient certainty and a greater discrepancy between them were associated with higher decisiveness and recklessness, and lower hesitancy. Personality measures showed mixed and generally weak correlations with the DPA variables. These convergent and discriminant results also held after controlling for all variables in regression. The results provide preliminary psychometric support for DPA as a general framework of behavioral decision making. DPA has the potential to be exploited in many contexts for uses that, to date, have been unachievable in a psychometrically valid manner. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   

17.
    
Visuospatial working memory allows us to hold multiple visual objects over short delays. It is typically tested by presenting an array of objects, then after a delay showing a ‘probe’ indicating which memory item to recall or reproduce by adjusting a target feature. However, recent studies demonstrate that information at the time of probe can disrupt recall. Here, in three experiments we test whether traditional memory probes, which contain features that compete with the feature to be recalled, may themselves interfere with performance. We asked participants to report the direction of one of the several coloured arrows in memory, based on its colour. First, we demonstrate that recall is better when the probe is initially just a coloured dot, rather than a coloured arrow which has to be adjusted to match orientation memory, consistent with interference from features of the probe itself. Second, this interference is present even when a mask follows the memory array, suggesting that the interference does not work by degrading immediate or iconic memory. Finally, when items are shown sequentially, the first and last items are invulnerable to probe interference. Our findings support recent theories of associative recall, in which probes reactivate features in WM, retrieving information by pattern completion.  相似文献   

18.
伪忽视是指个体存在的轻微偏左的不对称空间注意,而视觉空间伪忽视和表征伪忽视是其两种主要表现形式。研究初期,研究者认为两种伪忽视基于相同的注意定向左偏机制,但近年来研究发现,它们存在神经机制的差异。本文主要从两种伪忽视神经机制的异同出发,梳理近期研究结果,以期增进对伪忽视的理解。未来研究可以从认知时间进程角度或设计更为完善的研究范式进一步探讨这两种伪忽视神经机制的异同。  相似文献   

19.
Robinson's ([Robinson, D.L. (1999). The ‘IQ’ factor: implications for intelligence theory and measurement. Personality and Individual Differences, 27, 715–735]) arguments that crystallized intelligence represents the “one valid intelligence factor” are disputed. It is argued that Robinson seriously underestimated the relevance of fluid abilities to “intelligence”, by using an inappropriate criterion for assessing the intelligence-saturation of cognitive ability variables. The relevance of fluid and crystallized abilities to popular, psychometric, and biological conceptions of intelligence is discussed, and the issue of age-related changes in fluid and crystallized intelligence is also addressed.  相似文献   

20.
Sex Differences in Episodic Memory   总被引:1,自引:0,他引:1  
ABSTRACT— Research shows sex differences in episodic memory. These differences vary in magnitude as a function of the type of material to be remembered. Throughout the life span, verbal episodic-memory tasks yield differences favoring women. In contrast, episodic-memory tasks requiring visuospatial processing result in differences favoring men. There are also sex differences favoring women on episodic-memory tasks requiring both verbal and visuospatial processing and on face-recognition tasks. Thus, there may be a small, general episodic-memory advantage for women—an advantage that can increase by the advantage women have over men in verbal production and can be reversed by the male advantage in visuospatial tasks. In addition, environmental factors affect the magnitude of the sex differences in episodic memory.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号