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 0 毫秒
1.
The present study examined a visual field asymmetry in the contingent capture of attention that was previously observed by Du and Abrams (2010). In our first experiment, color singleton distractors that matched the color of a to-be-detected target produced a stronger capture of attention when they appeared in the left visual hemifield than in the right visual hemifield. This replicated Du and Abrams and also revealed a difference between hemifields in the time course of this effect. Our second experiment suggested that this asymmetry is moderated by the tuning of attentional control settings: when the target was easier to detect the asymmetry was attenuated. Our third experiment showed that this asymmetry is also present during singleton detection: a color singleton distractor produced a larger capture effect in the left hemifield than in the right hemifield. Finally, our fourth experiment suggested that this asymmetry is moderated by the salience of the attention-capturing distractor: when the distractor was not salient, the asymmetry was attenuated. These results suggest that there are boundary conditions in the observed hemifield asymmetry in the contingent capture of attention and several underlying brain systems might be involved.  相似文献   

2.
Two recent experiments (Della Casa et al., in press) yielded the typical reduced latent inhibition (LI) in high vs low schizotypy subjects after a slow, irregularly presented masking task (Stroop task), and reduced LI in low vs high schizotypy subjects after a fast, regularly presented masking task. The present experiment was aimed at testing whether speed or regularity was responsible for the different results. The present slow, regular experiment replicated the results of the former slow, irregular experiment, i.e. reduced LI in high schizotypals and significant LI in low schizotypals, indicating that speed and not regularity is the critical experimental variable. The modulation of the schizotypy—latent inhibition relationship can be attributed to differences in attentional resources or the time available to process the to-be-target stimuli during preexposure, in accordance with the hypothesis of Lubow and Gewirtz, 1995 that automatic processing of these stimuli is critical for the development of latent inhibition in adult humans. In addition, results on Stroop and negative priming effects are presented.  相似文献   

3.
4.
Although it is well documented that language plays an important role in cognitive development, there are different views concerning the mechanisms underlying these effects. Some argue that even early in development, effects of words stem from top-down knowledge, whereas others argue that these effects stem from auditory input affecting attention allocated to visual input. Previous research (e.g., Robinson & Sloutsky, 2004a ) demonstrated that non-speech sounds attenuate processing of corresponding visual input at 8, 12, and 16 months of age, whereas the current study demonstrates that words attenuate visual processing at 10 months but not at 16 months (Experiment 1). Furthermore, prefamiliarization with non-speech sounds (Experiment 2) resulted in able processing of visual input by 16-month-olds. These findings suggest that some effects of labels found early in development may stem from familiarity with human speech. The possibility of general-auditory factors underlying the effects of words on cognitive development is discussed.  相似文献   

5.
Atypical attention, while not a diagnostic feature, is common in individuals with autism spectrum disorders (ASD). The study of these atypicalities has recently gained in both quantity and quality, due in part to an increased focus on attentional atypicalities as one of the earliest signs of ASD in infancy. A range of attentional processes and components have been investigated, and the methods used are varied, from Posner-type paradigms, to the more recent use of eye-movement recording and change-detection techniques. This methodological complexity is one factor in the production of conflicting evidence on the topic of attention in ASD. This review uses a focus on methodology to clarify the literature to date and provide a resource for researchers wishing to study attention in ASD. Other factors that have contributed to the current discrepancies in findings are discussed, particularly the role of individual and group differences within the population of people with ASD.  相似文献   

6.
Adaptive cruise control (ACC), a driver assistance system that controls longitudinal motion, has been introduced in consumer cars in 1995. A next milestone is highly automated driving (HAD), a system that automates both longitudinal and lateral motion. We investigated the effects of ACC and HAD on drivers’ workload and situation awareness through a meta-analysis and narrative review of simulator and on-road studies. Based on a total of 32 studies, the unweighted mean self-reported workload was 43.5% for manual driving, 38.6% for ACC driving, and 22.7% for HAD (0% = minimum, 100 = maximum on the NASA Task Load Index or Rating Scale Mental Effort). Based on 12 studies, the number of tasks completed on an in-vehicle display relative to manual driving (100%) was 112% for ACC and 261% for HAD. Drivers of a highly automated car, and to a lesser extent ACC drivers, are likely to pick up tasks that are unrelated to driving. Both ACC and HAD can result in improved situation awareness compared to manual driving if drivers are motivated or instructed to detect objects in the environment. However, if drivers are engaged in non-driving tasks, situation awareness deteriorates for ACC and HAD compared to manual driving. The results of this review are consistent with the hypothesis that, from a Human Factors perspective, HAD is markedly different from ACC driving, because the driver of a highly automated car has the possibility, for better or worse, to divert attention to secondary tasks, whereas an ACC driver still has to attend to the roadway.  相似文献   

7.
8.
9.
Mindfulness meditation might improve a variety of cognitive processes, but the available evidence remains fragmented. This preregistered meta-analysis (PROSPERO-CRD42018100320) aimed to provide insight into this hypothesis by assessing the effects of brief mindful attention induction on cognition. Articles were retrieved from Pubmed, PsycInfo and Web of Science up until August 1, 2018. A total of 34 studies were included. The outcomes were categorized into four cognitive domains: attentional functioning, memory, executive functioning and higher-order function. A small effect was found across all cognitive domains (Hedges’ g = 0.18, 95% IC = 0.07–0.29). Separated analyses for each cognitive domain revealed an effect only in higher-order cognitive functions (k = 10, Hedges’ g = 0.35, 95% IC = 0.20–0.50). Results suggest that mindfulness induction improves cognitive performance in tasks involving complex higher-order functions. There was no evidence of publication bias, but studies generally presented many methodological flaws.  相似文献   

10.
Based on a puzzling pattern in our judgements about intentional action, Knobe [(2003). “Intentional Action and Side-Effects in Ordinary Language.” Analysis 63: 190–194] has claimed that these judgements are shaped by our moral judgements and evaluations. However, this claim goes directly against a key conceptual intuition about intentional action – the “frame-of-mind condition”, according to which judgements about intentional action are about the agent’s frame-of-mind and not about the moral value of his action. To preserve this intuition Hindriks [(2008). “Intentional Action and the Praise-Blame Asymmetry.” The Philosophical Quarterly 58: 630–641; (2014). “Normativity in Action: How to Explain the Knobe Effect and its Relatives.” Mind & Language 29: 51–72] has proposed an alternate account of the Knobe Effect. According to his “Normative Reason account of Intentional Action”, a side-effect counts as intentional only when the agent thought it constituted a normative reason not to act but did not care. In this paper, I put Hindriks’ account to test through two new studies, the results of which suggest that Hindriks’ account should be rejected. However, I argue that the key conceptual insight behind Hindriks’ account can still be saved and integrated in future accounts of Knobe’s results.  相似文献   

11.
The notion that developmental dyslexia may result from a general, nonspecific, defect in perceiving rapidly changing auditory signals is a current subject of debate (so-called "temporal processing deficit" hypothesis). Thirteen phonological dyslexics (age 10-13 years) and 10 controls matched for chronological and reading age were compared on a temporal order judgment (TOJ) task using the succession of two consonants (/p/-/s/) within a cluster. In order to test the relevance of the temporal deficit hypothesis, the task also included two additional conditions where either the two stimuli were artificially slowed or the interstimulus interval was expanded. As expected, the TOJ performance was significantly poorer in dyslexics than in controls. Moreover, in the "slowed speech" condition dyslexics' performance improved to reach the normal controls' level, whereas no significant improvement occurred when increasing the interstimulus interval. Finally dyslexics' performances, especially on the slowed condition, were found correlated with several tests of phonological processing (phoneme deletion, rhyme judgment, and nonword spelling tasks). These results lend support to the general temporal deficit theory of dyslexia.  相似文献   

12.
Multisensory integration and crossmodal attention have a large impact on how we perceive the world. Therefore, it is important to know under what circumstances these processes take place and how they affect our performance. So far, no consensus has been reached on whether multisensory integration and crossmodal attention operate independently and whether they represent truly automatic processes. This review describes the constraints under which multisensory integration and crossmodal attention occur and in what brain areas these processes take place. Some studies suggest that multisensory integration and crossmodal attention take place in higher heteromodal brain areas, while others show the involvement of early sensory specific areas. Additionally, the current literature suggests that multisensory integration and attention interact depending on what processing level integration takes place. To shed light on this issue, different frameworks regarding the level at which multisensory interactions takes place are discussed. Finally, this review focuses on the question whether audiovisual interactions and crossmodal attention in particular are automatic processes. Recent studies suggest that this is not always the case. Overall, this review provides evidence for a parallel processing framework suggesting that both multisensory integration and attentional processes take place and can interact at multiple stages in the brain.  相似文献   

13.
Suicide is a major public health problem, and suicide rates are still on the rise. Current strategies for identifying individuals at risk for suicide, such as the use of a patient's self‐reported suicidal ideation or evidence of past suicide attempts, have not been sufficient in reducing suicide rates. Recently, research groups have been focused on determining the acute mental state preceding a suicide attempt. The development of an acute suicidal diagnosis, the Suicide Crisis Syndrome (SCS), is aimed at capturing this state to better treat individuals. The SCS has five main evidence‐based components—entrapment, affective disturbance, loss of cognitive control, hyperarousal, and social withdrawal. The SCS may provide clinicians with the ability to identify individuals who are experiencing an acute pre‐suicidal mental state, regardless of their self‐reported suicidal ideation. Future research leading to the incorporation of this diagnosis into clinical practice could improve the quality of care and reduce the personal, societal, and legal burden of suicide.  相似文献   

14.
We report a study that examines whether the presentation of irrelevant, ordinal information at central fixation interacts with the allocation of attention beyond fixation. Previous research has demonstrated that number perception influences the allocation of spatial attention, such that the presentation of a spatially nonpredictive number at fixation results in attention being allocated to the left when the central number is low (e.g., 1), and attention being allocated to the right when the central number is high (e.g., 9). Here, we examine whether this attentional SNARC effect (spatial numerical association of response codes) generalizes to other ordinal sequences: letters, days, and months. Though we replicate the attentional SNARC we find that this effect is number-specific, unless participants are required to process the cue in an order-relevant fashion. This discovery of number-specificity has important implications both for the functional separation between SNARC and attention-SNARC effects, as well as lending support to recent theories regarding the specificity of a shared neural architecture between numbers and visuospatial attention.  相似文献   

15.
Some people seem to have a ‘talent’ for spiritual experience: they readily sense the presence of supernatural beings, receive special messages from God, and report intense feelings of self-transcendence, awe and wonder. Here we review converging strands of evidence to argue that the trait of 'absorption' captures a general proclivity for having spiritual experiences. Participants scoring highly on the Tellegen Absorption Scale report vivid experiences of hearing God's voice during prayer, intense mystical experiences in response to psychedelics or placebo brain-stimulation, and strong feelings of presence and transcendence when confronted with natural beauty, virtual reality, or music. Several mechanisms may help to explain the relationship between absorption and spiritual experience. We suggest that absorption captures an experiential mindset that intensifies inner and outer sensory experience in ways that reflect both prior expectation and novel sensory engagement. It seems to enable that which must be imagined to feel more real.  相似文献   

16.
Lv C  Wang Q 《Brain and cognition》2012,80(1):96-103
Event-related brain potentials (ERPs) were recorded during a Chinese character decision task to examine whether N400 amplitude is modulated by stimulus font. Results revealed large negative-going ERPs in an N400 time window of 300-500ms to stimuli presented in degraded Xing Kai Ti (XKT) font compared with more intact Song Ti (ST) font regardless of whether the stimuli were real or pseudo-characters. ERPs for the pseudo-characters were more negative than for the real characters with similar timing and scalp distribution. The N400-like font effect on amplitude is interpreted as analogous to an N400 stimulus degradation effect, an extension to Holcomb (1993); the degraded perceptual cues provided by XKT supposedly account for this degradation effect. This effect is further interpreted to reflect relative difficulty, which results from orthographic processing difficulty, in retrieving the meaning of XKT stimuli compared with ST stimuli.  相似文献   

17.
王震  龙昱帆  彭坚 《心理科学进展》2019,27(6):1123-1140
在领导力研究领域, 积极领导力通常被视为提升组织、团队和下属产出的关键因素之一。近年来, 上述观点却不断受到质疑。在此背景下, 积极领导力潜在的消极效应日益引起关注, 并逐渐演变成为一个前沿课题。从现有的41项实证研究来看:(1)在研究主题上, 现有研究主要考察了变革、授权、道德、包容和仁慈等行为导向和领导-下属交换等关系导向领导风格的消极效应, 涉及对下属、团队和领导自身三类主体的消极作用; (2)在分析视角上, 主要包括两大类——构建兼具“积极效应”和“消极效应”的模型和单纯只考虑某一领导风格潜在的“消极效应”, 前者可以细分为三类双刃剑效应和两类非线性效应; (3)在理论机制上, 积极领导风格的消极效应可以用社会认定、社会交换、精神分析、认知加工和资源相关理论进行解释。未来研究可着重: (1)形成一个系统解释积极领导消极效应的整合性理论、框架或模型; (2)从领导类型、消极效应表现和作用机制方面进一步进行实证探讨; (3)挖掘积极领导消极效应的边界条件和破解因素, 为实践应用提供启示; (4)开展跨群体和针对特定群体的探讨。  相似文献   

18.
Despite the ubiquitous presence of the term “career patterns” in the discourse about careers, the existing empirical evidence on (managerial) career patterns is rather limited. From this literature review of 33 published empirical studies of managerial and similar professional career patterns found in electronic bibliographic databases, it is clear that upward mobility is still the norm, even when contrasting traditional to “new” careers. We argue that the nature and number of unique career patterns identified is strongly influenced by where and when the data were collected (i.e. empirical access), and how career patterns are measured. Our review further shows organizations clearly still act as containing social structures for the patterning of managerial careers, and that contemporary managerial careers, despite some evidence of increasing inter-organizational mobility, have new boundaries which induce linearity. We provide insights for further conceptualization of managerial career patterns and for advancing methodological approaches, including the use of optimal matching analysis and narratives. By expanding the scope of career pattern dimensions beyond time and direction, this review provides ground for further research on managerial career patterns.  相似文献   

19.
Induction of lucid dreams: A systematic review of evidence   总被引:1,自引:0,他引:1  
In lucid dreams the dreamer is aware of dreaming and often able to influence the ongoing dream content. Lucid dreaming is a learnable skill and a variety of techniques is suggested for lucid dreaming induction. This systematic review evaluated the evidence for the effectiveness of induction techniques. A comprehensive literature search was carried out in biomedical databases and specific resources. Thirty-five studies were included in the analysis (11 sleep laboratory and 24 field studies), of which 26 employed cognitive techniques, 11 external stimulation and one drug application. The methodological quality of the included studies was relatively low. None of the induction techniques were verified to induce lucid dreams reliably and consistently, although some of them look promising. On the basis of the reviewed studies, a taxonomy of lucid dream induction methods is presented. Several methodological issues are discussed and further directions for future studies are proposed.  相似文献   

20.
This article presents two studies aimed at validating a new TAT-like projective measure of autonomous motivation in children. Study 1 assesses the validity of the new measure by correlating it with self-report questionnaires of autonomous motivation, positive and negative affect, task value and mastery goal orientation. Study 2 is an experiment in which autonomous motivation is manipulated and then assessed with the new projective measure and with a self-report scale. Results of both studies support the validity of the new projective measure. In study 2, regression analysis suggests that the new projective measure is sensitive to aspects of experimentally induced autonomous motivation that are not captured by a self-report measure.
Avi AssorEmail:
  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