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131.
Rehearsal in Spatial Working Memory: Evidence From Neuroimaging 总被引:7,自引:0,他引:7
Edward Awh John Jonides Edward E. Smith Richard B. Buxton Larry R. Frank Tracy Love Eric C. Wong & Leon Gmeindl 《Psychological science》1999,10(5):433-437
A variety of biological evidence has identified a frontal-parietal circuit underlying spatial working memory for visual stimuli. But the question remains, how do these neural regions accomplish the goal of maintaining location information on-line? We tested the hypothesis that the active rehearsal of spatial information in working memory is accomplished by means of focal shifts of spatial selective attention to memorized locations. Spatial selective attention has been shown to cause changes in the early visual processing of stimuli that appear in attended locations. Thus, the hypothesis of attention-based rehearsal predicts similar modulations of visual processing at memorized locations. We used functional magnetic resonance imaging to observe posterior visual activations during the performance of a spatial working memory task. In line with the hypothesis, spatial rehearsal led to enhanced activation in the early visual areas contralateral to the memorized locations. 相似文献
132.
Perfidious feminine faces 总被引:1,自引:0,他引:1
133.
134.
Angelika Kratzer 《Journal of Philosophical Logic》1981,10(2):201-216
Conclusion The last section made it clear that an analysis which at first seems to fail is viable after all. It is viable if we let it depend on a partition function to be provided by the context of conversation. This analysis leaves certain traits of the partition function open. I have tried to show that this should be so. Specifying these traits as Pollock does leads to wrong predictions. And leaving them open endows counterfactuals with just the right amount of variability and vagueness. 相似文献
135.
James R. Kauffman Steve M. Jex Kevin G. Love Terry M. Libkuman 《International Journal of Selection & Assessment》1993,1(4):213-223
Evidence regarding the construct validity of assessment centre performance dimensions is reviewed. The evidence strongly suggests that variance in ratings tends to reflect exercises more than individual performance dimensions, thus calling into question the construct validity and utility of these dimensions. A number of biases in the assessment centre process, as well as more general rating biases are noted that may be responsible for these pervasive exercise effects. Suggestions are made for enhancing the construct validity of performance dimensions. 相似文献
136.
Summary This article examines the programming of relatively long sequences of action with the control of sequential movements being effected through the use of a tapping task involving a sequence of five taps. Subjects were required to tap with their right hand at rates of 150, 200, and 250 ms. There were two conditions, with subjects being required either to increase, in condition 1, or to decrease, in condition 2, the force at one of the five tap positions (all five tap positions were examined), then return to the previous force level. Changes in timing resulting from variations in the force characteristics have previously been discussed in terms of changes in the organizational time required ( Semjen, Garcia-Colera, & Requin, 1984). The current study breaks the intertap interval down into two separate components: the contact interval (finger in contact with the key) and the non-contact interval (interval preceding the tap). Although changes in the non-contact interval could be explained in terms of changes in the organizational time required, changes in the contact interval appeared to be a result of the mechanical changes in force. 相似文献
137.
Hurricane Andrew: Psychological distress among shelter victims 总被引:1,自引:0,他引:1
David N. Sattler Jerome M. Sattler Charles Kaiser Beverly A. Hamby Mary G. Adams Laura Love Jacqueline Winkler Claudia Abu-Ukkaz Barrett Watts Ann Beatty 《International journal of stress management》1995,2(3):133-143
This study examined psychological distress and functioning among Hurricane Andrew victims who lost their homes and were living in shelters. Four and one-half weeks after Hurricane Andrew struck southern Florida, 89 (45 males, 44 females) Blacks, Hispanics, and Whites completed a questionnaire. The questionnaire asked for information about psychological and psychophysiological symptoms, use of mental health services, coping responses, and extent of preparation for the storm. The findings suggest that loss of home and property were related to distress and depression. About one-quarter of the sample were moderately depressed. Over one-third of the sample reported experiencing psychological and psychophysiological distress. Approximately one-half of the subjects did not take the hurricane warnings seriously. White subjects began preparing earlier for the storm, and evacuated their homes more frequently than did Black subjects. Implications of the findings and future research directions are discussed. 相似文献
138.
Laures-Gore Jacqueline S. Lambert Penelope Leonard Kruger Ann Cale Love Jennifer Davis Don E. 《Journal of religion and health》2018,57(5):1876-1888
Journal of Religion and Health - The role of spirituality in post-stroke aphasia recovery has been ignored despite its potential contribution to positive health outcomes, particularly stroke... 相似文献
139.
How left inferior frontal cortex participates in syntactic processing: Evidence from aphasia 总被引:3,自引:0,他引:3
We report on three experiments that provide a real-time processing perspective on the poor comprehension of Broca’s aphasic patients for non-canonically structured sentences. In the first experiment we presented sentences (via a Cross Modal Lexical Priming (CMLP) paradigm) to Broca’s patients at a normal rate of speech. Unlike the pattern found with unimpaired control participants, we observed a general slowing of lexical activation and a concomitant delay in the formation of syntactic dependencies involving “moved” constituents and empty elements. Our second experiment presented these same sentences at a slower rate of speech. In this circumstance, Broca’s patients formed syntactic dependencies as soon as they were structurally licensed (again, a different pattern from that demonstrated by the unimpaired control group). The third experiment used a sentence-picture matching paradigm to chart Broca’s comprehension for non-canonically structured sentences (presented at both normal and slow rates). Here we observed significantly better scores in the slow rate condition. We discuss these findings in terms of the functional commitment of the left anterior cortical region implicated in Broca’s aphasia and conclude that this region is crucially involved in the formation of syntactically-governed dependency relations, not because it supports knowledge of syntactic dependencies, but rather because it supports the real-time implementation of these specific representations by sustaining, at the least, a lexical activation rise-time parameter. 相似文献
140.
Rule-based and information-integration category learning were compared under minimal and full feedback conditions. Rule-based category structures are those for which the optimal rule is verbalizable. Information-integration category structures are those for which the optimal rule is not verbalizable. With minimal feedback subjects are told whether their response was correct or incorrect, but are not informed of the correct category assignment. With full feedback subjects are informed of the correctness of their response and are also informed of the correct category assignment. An examination of the distinct neural circuits that subserve rule-based and information-integration category learning leads to the counterintuitive prediction that full feedback should facilitate rule-based learning but should also hinder information-integration learning. This prediction was supported in the experiment reported below. The implications of these results for theories of learning are discussed. 相似文献