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A chasm divides the huge corpus of maze studies found in the literature, with animals tested in mazes on the one side and humans tested with mazes on the other. Advances in technology and software have made possible the production and use of virtual mazes, which
allow humans to navigate computerized environments and thus for humans and nonhuman animals to be tested in comparable spatial
domains. In the present experiment, this comparability is extended even further by examining whether rhesus monkeys (Macaca mulatta) can learn to explore virtual mazes. Four male macaques were trained to manipulate a joystick so as to move through a virtual
environment and to locate a computer-generated target. The animals succeeded in learning this task, and located the target
even when it was located in novel alleys. The search pattern within the maze for these animals resembled the pattern of maze
navigation observed for monkeys that were tested on more traditional two-dimensional computerized mazes. 相似文献
154.
Mahmoud Rashidi Farid Pazhoohi Masoud Hosseinchari 《Australian journal of psychology》2012,64(3):164-168
Facial attractiveness has advantages both socially and sexually, and the human brain has evolved to perceive specific facial characteristics as attractive. The current research examined the effect of facial stimuli exposure time on facial attractiveness evaluations. In Experiment 1, 86 students observed 44 facial stimuli in short and long amounts of time. To eliminate any influence of repeated stimuli on the second observations, Experiment 2 was performed on 84 participants who observed the facial stimuli in either short or long durations. Differences in both experiments were significant. These studies showed that exposure time has an influence on the evaluation of facial attractiveness. Participants who were exposed to facial stimuli for a short amount of time perceived greater facial attractiveness than when they were exposed for a longer time to the same stimuli. In other words, faces were more beautiful when they were observed in a short amount of time, and this effect occurred regardless of gender. 相似文献
155.
Six normally capable adults first learned three conditional relations in each of two prospective equivalence classes via match-to-sample training with figures as conditional (sample) and discriminative (comparison) stimuli. Then one trained conditional relation in each prospective class was brought under the control of contextual stimuli, two dictated nonsense syllables. Test performances indicated the emergence of untrained conditional relations, and therefore two equivalence classes, that were conditional on the contextual stimuli. These tests involved untrained combinations of contextual stimuli and stimuli in conditional relations, suggesting that the contextual stimuli functioned independently to control conditional relations rather than forming compound stimuli with samples and comparisons in training. Next, two novel figures were made equivalent to each of the original dictated contextual stimuli by match-to-sample training and testing. On subsequent tests, all subjects demonstrated transfer of conditional control of untrained conditional relations from the original auditory contextual stimuli to equivalent visual stimuli. These outcomes further supported the conclusion that the contextual stimuli exerted true conditional control over conditional relations in the equivalence classes and were not merely elements of compound stimuli. 相似文献
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情绪刺激的特定加工路径使其能够有效捕获注意并获得加工资源,在一定程度上反映了其加工优势。然而,由于信息加工资源的有限性,由情绪信息引发的、不受自上而下认知因素影响的加工优势并非一直存在。本文根据情绪刺激在信息加工过程不同阶段的加工特点,阐述了情绪注意效应与自上而下注意效应在知觉阶段的注意选择过程中的交互影响,以及在执行控制阶段,情绪刺激加工与执行控制功能间的相互作用。 相似文献
158.
本研究探讨重复知盲发生在知觉阶段还是在记忆阶段。采用快速视觉系列呈现(rapid serial visual representation, 简称RSVP)任务, 让被试即时回忆80个词表中呈现的词。操作了词表中目标词的重复数, 分为无重复、单刺激重复(重复一对)和双刺激重复(重复两对)三种, 和目标词的情绪效价, 分为中性词和情绪词两种。结果发现, 对目标词回忆的正确率是:当目标词和非目标词都是中性词汇, 即二者的情绪效价强度相当时(实验1), 在无重复条件与双刺激重复条件下无差异, 二者均大于单刺激重复条件; 当目标词是消极词汇, 非目标词是中性词汇, 即目标刺激的情绪效价强度大于非目标刺激时(实验2), 无重复条件与单刺激重复条件无差异, 二者均大于双刺激重复条件。结果表明:(1)RSVP 任务下词表中有双刺激重复时, 如果刺激的效价强度相当, 出现重复优势; 如果目标刺激的效价强度高于非目标刺激, 出现重复劣势; (2)人们会主动分配更多的注意资源给效价高的刺激, 重复知盲产生在记忆阶段, 支持注意资源分配最优化假设。 相似文献
159.
社会情绪选择理论从时间知觉和动机的角度推论老年人的情绪加工有积极效应; 即与年轻人相比, 老年人更偏向于加工积极刺激而回避消极刺激。但是, 关于积极效应的实证研究有诸多不一致之处。分析近年相关研究的设计细节, 验证积极效应的研究多采用年轻和老年两个年龄组的对照, 而采用3个以上年龄组被试的研究结果不一致; 积极效应在东方文化下的应用研究结论也不一致; 多样化的情绪刺激、情绪分类和刺激呈现方式是各研究结论差异的重要原因, 而且积极效应研究应区分“情绪偏向”和“情绪效应”两种年龄组评价方式。因此, 今后研究需要尽可能地扩大年龄范围以确认积极效应出现时间、加强跨文化、跨地区比较以验证积极效应的普适性, 并提高研究中所用刺激材料的生态效度, 深入探索积极效应的普遍性与神经机制。 相似文献
160.
阈下语义启动效应是指阈下呈现的启动词能够对与之有语义联想关系的目标词的加工产生促进作用.阈下语义启动效应具有不稳定性且容易受到各种因素的影响.影响阈下语义启动效应的因素有外部因素和内部因素两大类,外部因素包括任务类型、实验材料和实验程序等因素,内部因素包括注意、任务设置、目的和期望.本文首先简单回顾阈下语义启动效应的研究历史,并介绍相应的研究范式及觉知状态的测量方法,然后重点对影响因素进行了总结和评述.未来的研究可以从优化研究范式、加强脑机制研究以及发展理论等几个方面进一步拓展. 相似文献