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441.
视觉工作记忆巩固机制是工作记忆研究领域的前沿科学问题。Vogel等(2006)采用掩蔽的变化检测范式揭示视觉工作记忆巩固过程及其规律, 指出巩固是从容易受到干扰的感觉表征转化为稳定的工作记忆的表征的过程。本文系统梳理了视觉工作记忆巩固的实验范式, 以及相关影响因素的研究成果, 分析了视觉工作记忆巩固现象所反映的内部机制, 指出Vogel等所揭示的视觉工作记忆巩固现象反映的可能并非记忆项目的固化过程, 而是掩蔽刺激对记忆项目的干扰作用的衰退过程。 相似文献
442.
Change detection performance is influenced by a number of factors, among which is the informativeness of targets. It has not
been clarified, yet, whether the highly informative regions have a processing priority as a result of resource deployment
from other tasks or whether it results from a better resource management. In this paper, we adopted a change detection paradigm
in which thirty participants were randomly assigned to two groups: single (change detection task) and dual task [change detection
and a simplified version of the Paced Auditory Serial Oppository Task (PASOT, Gow and Deary in J Clin Exp Neuropsychol 26:723–736,
2004), which implies a verbal effort]. Stimulus informativeness was defined as social relevance, that is, changing targets were
people (high relevance) versus objects (low relevance), all other aspects (i.e., salience and position in the scene) kept
constant. As hypothesized, data analyses showed a significant main effect of social relevance and task condition, i.e., better
change detection performance and lower change detection times for people versus objects and for single than for dual task
condition. Interestingly, the PASOT accuracy remained stable across the person versus object trials, thus implying that the
better performance with socially relevant targets could not be explained by a resources withdrawal from the secondary task.
相似文献
Fabrizio BraccoEmail: |
443.
Jeffrey J. Walczyk Kevin T. Mahoney Dennis Doverspike Diana A. Griffith-Ross 《Journal of business and psychology》2009,24(1):33-49
Purpose The purpose of this study was to test a new cognitive lie detection method, time restricted integrity confirmation (Tri-Con),
which uses response time and inconsistencies across answers as cues to deception.
Design/methodology/approach Data were obtained from two samples of students enrolled in psychology classes (n = 96 for Experiment 1, n = 99 for Experiment 2). The experimental task required students to lie or tell the truth to questions probing biodata under
time restriction. The foci of questions (such as Academics or Employment History) were chosen because of their relevance to
participants’ lives.
Findings Tri-Con was able to distinguish between truth tellers and liars after controlling for individual differences. In one experiment,
liar-truth teller classification accuracies reached 89%. Mean response times and answer consistency can be used to distinguish
those who lie from those who tell the truth.
Implications Research on cognitive-based lie detectors, such as Tri-Con, hold the potential for developing reliable and valid methods of
screening out employees likely to engage in misconduct and providing deceptive answers to screening questions. A cognitive
lie detector would constitute a paradigm shift away from the polygraph, and could be used in tandem with integrity tests.
Originality/value This study was a preliminary test of a cognitive lie detection method based on a model of cognitive events (the Activation-Decision-Construction
model) when people answer questions deceptively. It constitutes a step in translating laboratory-based cognitive research
into applied technologies for the real world detection of lying, including lying that occurs during pre-employment screening.
Received and reviewed by former editor, George Neuman. 相似文献
444.
结核病仍然是严重危害我国人群健康的传染病,如何有效发现结核病病例是制约目前结核病控制项目是否成功的瓶颈。乡村医生在结核病病例发现方面具有至关重要的作用,如何提高其作用已成为研究的热点。本文对现阶段乡村医生发现可疑结核病症状者的方式及现状进行综述,并提出提高乡村医生在结核病病例发现中作用的措施。 相似文献
445.
Five experiments investigated whether observer locomotion provides specialized information facilitating novel-view scene recognition. Participants detected a position change after briefly viewing a desktop scene when the table stayed stationary or was rotated and when the observer stayed stationary or locomoted. The results showed that 49° novel-view scene recognition was more accurate when the novel view was caused by observer locomotion than when the novel view was caused by table rotation. However such superiority of observer locomotion disappeared when the to-be-tested viewpoint was indicated during the study phase, when the study viewing direction was indicated during the test phase, and when the novel test view was 98°, and was even reversed when the study viewing direction was indicated during the test phase in the table rotation condition but not in the observer locomotion condition. These results suggest scene recognition relies on the identification of the spatial reference directions of the scene and accurately indicating the spatial reference direction can facilitate scene recognition. The facilitative effect of locomotion occurs because the spatial reference direction of the scene is tracked during locomotion and more accurately identified at test. 相似文献
446.
Previous neuroimaging studies have suggested that the neural activity associated with truthful recall, with false memory, and with feigned memory impairment are different from one another. Here, we report a functional magnetic resonance imaging (fMRI) study that addressed an important but yet unanswered question: Is the neural activity associated with intentional faked responses and with errors differentiable? Using a word list learning recognition paradigm, the findings of this mixed event-related fMRI study clearly indicated that the brain activity associated with intentional faked responses was different to the activity associated with errors committed unintentionally. For intentional faked responses, significant activation was found in the ventrolateral prefrontal cortex, the posterior cingulate region, and the precuneus. However, no significant activation was observed for unintentional errors. The results suggest that deception, in terms of feigning memory impairment, is not only more cognitively demanding than making unintentional errors but also utilizes different cognitive processes. 相似文献
447.
Lying about facial recognition: an fMRI study 总被引:1,自引:0,他引:1
Novel deception detection techniques have been in creation for centuries. Functional magnetic resonance imaging (fMRI) is a neuroscience technology that non-invasively measures brain activity associated with behavior and cognition. A number of investigators have explored the utilization and efficiency of fMRI in deception detection. In this study, 18 subjects were instructed during an fMRI "line-up" task to either conceal (lie) or reveal (truth) the identities of individuals seen in study sets in order to determine the neural correlates of intentionally misidentifying previously known faces (lying about recognition). A repeated measures ANOVA (lie vs. truth and familiar vs. unfamiliar) and two paired t-tests (familiar vs. unfamiliar and familiar lie vs. familiar truth) revealed areas of activation associated with deception in the right MGF, red nucleus, IFG, SMG, SFG (with ACC), DLPFC, and bilateral precuneus. The areas activated in the present study may be involved in the suppression of truth, working and visuospatial memories, and imagery when providing misleading (deceptive) responses to facial identification prompts in the form of a "line-up". 相似文献
448.
线索对基本特征刺激加工作用机制研究 总被引:1,自引:0,他引:1
许多研究认为,基本特征的觉察过程是平行加工的过程,它的探测与注意分配到某个位置没有关系。本实验通过不同线索分配注意,探讨了基本特征的平行加工与选择性注意的作用的关系。结果发现:(1)基本特征的平行加工,可能受到注意分配影响的;(2)注意分配的作用可能通过抑制干扰项的加工,而不仅仅只是通过促进靶子的加工而实现的。作者在讨论中探讨了可能的原因。 相似文献
449.
结构方程模型中调节效应的标准化估计 总被引:7,自引:0,他引:7
回归分析和结构方程分析中,标准化估计对解释模型和比较效应大小有重要作用。对于调节效应模型(或交互效应模型),通常的标准化估计没有意义。虽然显变量的调节效应模型标准化估计问题已经解决,但潜变量的调节效应模型标准化估计问题复杂得多。本文先介绍回归分析中显变量调节效应模型的标准化估计,然后提出了一种通过参数的原始估计和通常标准化估计来计算潜变量调节效应模型的“标准化”估计的方法,得到的“标准化”估计是尺度不变的,说明可以用“标准化”估计来解释和比较主效应和调节效应 相似文献
450.
In the present report, we describe a new dynamic field theory that captures the dynamics of visuo-spatial cognition. This theory grew out of the dynamic systems approach to motor control and development, and is grounded in neural principles. The initial application of dynamic field theory to issues in visuo-spatial cognition extended concepts of the motor approach to decision making in a sensori-motor context, and, more recently, to the dynamics of spatial cognition. Here we extend these concepts still further to address topics in visual cognition, including visual working memory for non-spatial object properties, the processes that underlie change detection, and the ‘binding problem’ in vision. In each case, we demonstrate that the general principles of the dynamic field approach can unify findings in the literature and generate novel predictions. We contend that the application of these concepts to visual cognition avoids the pitfalls of reductionist approaches in cognitive science, and points toward a formal integration of brains, bodies, and behavior. 相似文献