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101.
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In the present study, we tested whether visual singletons remaining outside awareness are processed. Singletons differ by at least one feature from their more homogeneous neighbors. Here, we used backward masking to prevent awareness of shape singleton primes (Experiments 1-4) or color singleton primes (Experiment 5). Masked singleton primes nonetheless produced a congruence effect: Congruent singletons indicating the location of subsequent visible targets facilitated responses, in comparison with incongruent singletons at positions away from the targets. This congruence effect was found with singletons defined by feature presence or feature absence. It was at least partly due to attentional capture by singletons remaining outside of the participants' awareness. Results are discussed in light of theories pertaining to singleton effects and masked-priming effects. 相似文献
103.
John L. Woodard Elinor S.W. Dorsett James G. Cooper Bruce P. Hermann Mark A. Sager 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2013,20(4):299-315
Abstract The purpose of this study was to develop and evaluate a brief cognitive screen for possible Mild Cognitive Impairment (MCI) and other neurocognitive impairment in a sample of general medical patients. Two hundred community-dwelling general medical patients aged 65 or older participated in this study. Age and education corrected scores from the Rey Auditory Verbal Learning Test and Mattis Dementia Rating Scale were used to classify participants into three groups: MCI, neurocognitive disorder, cognitively intact. Groups were then compared on an independent set of measures: the Consortium to Establish a Registry for Alzheimer’s Disease (CERAD) neuropsychological battery, Mini-Mental State Examination, and Clock Drawing Test. The MCI group constituted 9% of the sample, while 10.5% of the sample was classified into the neurocognitive disorder group. The CERAD Verbal Category Fluency and CERAD Word List Memory Test Delayed Recall measures were individually and collectively the most effective in differentiating cognitively intact elders from persons in both the MCI and neurocognitive disorder groups. We conclude that these two brief measures appear to be effective for detecting possible MCI or neurocognitive disorder, thereby facilitating identification of candidates who would benefit from more detailed neuropsychological assessment. 相似文献
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Julia Schüler Veronika Brandstätter Nicola Baumann 《European journal of social psychology》2013,43(5):335-343
The present research investigates whether and how learned symbols for failure reduce task performance. We tested the effect of number priming in two countries with different learning histories for numbers. Priming numbers associated with failure (6 in Germany and 1 in Switzerland) were hypothesized to reduce performance. As expected, in Switzerland, priming with the failure number 1 reduced performance (Study 1), whereas in Germany, priming with the failure number 6 impaired performance in analogy tasks (Study 2). Study 2 additionally analyzed the mechanism and showed that the relationship between failure number priming and performance was mediated by evoked avoidance motivation and that dispositional fear of failure moderated this mediation. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
106.
Blind people can learn to understand speech at ultra-high syllable rates (ca. 20 syllables/s), a capability associated with hemodynamic activation of the central-visual system. To further elucidate the neural mechanisms underlying this skill, magnetoencephalographic (MEG) measurements during listening to sentence utterances were cross-correlated with time courses derived from the speech signal (envelope, syllable onsets and pitch periodicity) to capture phase-locked MEG components (14 blind, 12 sighted subjects; speech rate = 8 or 16 syllables/s, pre-defined source regions: auditory and visual cortex, inferior frontal gyrus). Blind individuals showed stronger phase locking in auditory cortex than sighted controls, and right-hemisphere visual cortex activity correlated with syllable onsets in case of ultra-fast speech. Furthermore, inferior-frontal MEG components time-locked to pitch periodicity displayed opposite lateralization effects in sighted (towards right hemisphere) and blind subjects (left). Thus, ultra-fast speech comprehension in blind individuals appears associated with changes in early signal-related processing mechanisms both within and outside the central-auditory terrain. 相似文献
107.
An action crisis is defined as an intra-psychic conflict between further goal pursuit and disengagement from the goal and frequently signifies the beginning of disengagement processes. By analyzing dispositional predictors of the development of goal-related action crises over time, we applied a process-based approach to goal disengagement. In two longitudinal studies, we evaluated the effect of action (vs. state) orientation on the development of action crises. Using change-regression models, the hypothesis could be confirmed that action orientation enables individuals to overcome action crises in personal goals. Furthermore, in two cross-sectional studies, previously reported effects of action orientation on health and well-being could be replicated and shown to be partially mediated by a decreased overall prevalence of action crises. 相似文献
108.
In visual search for pop‐out targets, target detection is expedited when the target‐defining dimension (e.g., colour) is repeated on consecutive trials, but not (or less) when the target feature (e.g., red) is repeated (Found & Müller, 1996). The present study examined whether this dimension‐specific intertrial facilitation (ITF) is mediated by an explicit or an implicit memory of the target on the previous trial. In Experiment 1, observers had no above‐chance knowledge of the target dimension (or feature) when this information was not to be encoded and retained explicitly; yet, they exhibited dimension‐specific ITF. In Experiment 2, the nature of the ITF effect was unaffected by whatever attribute of the target was to be explicitly encoded and memorized, its dimension or feature; however, ITF was increased compared to a no‐memory control condition. In Experiment 3, ITF was not increased when observers had to determine the target dimension, but without having to maintain a memory of it during the intertrial interval. These results suggest that, although an implicit memory is sufficient for producing dimension‐specific ITF, ITF is top‐down modulable by explicit memory instructions. 相似文献
109.
The study investigated whether dynamic information promotes newborns' ability to recognize a face. After being habituated to a face undergoing an ordered sequential head rigid motion (Exp. 1), 1- to 3-day-old newborns fully recognized the familiar face shown in the profile pose, as documented by a preference for the profile pose of a novel face. When familiarized to an ordered sequence of different viewpoint static images of a face (Exp. 2), newborns failed to recognize the profile pose of the familiar face, their visual exploration of the familiar and novel faces being at chance. Habituation to a random head rigid motion (Exp. 3) allowed only a partial recognition of face identity, as newborns preferred the profile pose of the familiar, rather than the novel, face. Rigid head motion is an important source of information for newborns' face recognition, probably aiding the derivation of a three-dimensional face structure. 相似文献
110.
This article presents a classification method that makes possible the detection of important decision strategies that people use in nonrisky multiattribute decision tasks. The classification method incorporates a multimethod approach that combines elements of both structural modeling and process tracing. We begin with a discussion of nine common characteristics of decision strategies and then classify 13 decision strategies on the basis of these characteristics. Next, we demonstrate that six of the characteristics can be used to develop one outcome-based and three process-based metrics. In addition, we present an algorithm that shows how to use the metrics. We demonstrate that using our metrics in conjunction with a measure for direction of search allows identification of most of the 13 decision strategies. Finally, we outline the potential of our research for the design of decision support systems such as online shops. 相似文献