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121.
Abstract Stress has been a ubiquitous concept in health research. We compare stress theories with the operationalization of stress in health research. Although scientific investigation is ideally based on theoretical principles, stress research is seen as often atheoretical or misapplying theories. Major conceptualizations of stress are considered and prominent research avenues in health psychology are analyzed as to the extent they mirror, diverge from, or inform stress conceptualizations. A central conclusion of the paper is that perceived and objective stressors are not only both valid construels of stress, but that they operate differently on psychological and physiological systems. 相似文献
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The neural correlates of reward-related trial-and-error learning: an fMRI study with a probabilistic learning task 下载免费PDF全文
Koch K Schachtzabel C Wagner G Reichenbach JR Sauer H Schlösser R 《Learning & memory (Cold Spring Harbor, N.Y.)》2008,15(10):728-732
This fMRI study investigated the neural correlates of reward-related trial-and-error learning in association with changing degrees of stimulus-outcome predictabilities. We found that decreasing predictability was associated with increasing activation in a frontoparietal network. Only maximum predictability was associated with signal decreases across the learning process. The receipt of monetary reward revealed activation in the striatum and associated frontoparietal regions. Present data indicate that during reward-related learning, high uncertainty forces areas relevant for cognitive control to remain activated. In contrast, learning on the basis of predictable stimulus-outcome associations enables the brain to reduce resources in association with the processes of prediction. 相似文献
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Backhaus J Hoeckesfeld R Born J Hohagen F Junghanns K 《Neurobiology of learning and memory》2008,89(1):76-80
While there is mounting evidence for the importance of sleep for declarative memory consolidation in adults, so far this issue has not been investigated in children despite considerable differences in sleep duration and sleep architecture between children and adults. Here, 27 children (aged between 9 and 12yr) were examined on two conditions: on the Sleep-Wake condition, subjects learned word pairs in the evening and delayed recall was tested first in the next morning after sleep and then again in the following evening after daytime wakefulness. On the Wake-Sleep condition, learning took place in the morning and delayed recall was tested in the evening of the same day and again in the next morning after sleep. In both conditions retention of declarative memory was significantly increased only after an interval of sleep that either followed immediately after learning (as in the Sleep-Wake condition) or that followed after daytime wakefulness (as in the Wake-Sleep condition), respectively. The results support the hypothesis that sleep plays an active role in declarative memory consolidation even if delayed and further show for the first time the importance of sleep for declarative memory consolidation during childhood. 相似文献
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Aleksandra Luszczynska Benicio Gutirrez‐Doa Ralf Schwarzer 《International journal of psychology》2005,40(2):80-89
Based on social‐cognitive theory ( 1 Bandura, 1997), this paper examined whether perceived self‐efficacy is a universal psychological construct that accounts for variance within various domains of human functioning. Perceived self‐efficacy is not only of a task‐specific nature, but it can also be identified at a more general level of functioning. General self‐efficacy (GSE) is the belief in one's competence to tackle novel tasks and to cope with adversity in a broad range of stressful or challenging encounters, as opposed to specific self‐efficacy, which is constrained to a particular task at hand. The study aimed at exploring the relations between GSE and a variety of other psychological constructs across several countries. Relations between general self‐efficacy and personality, well‐being, stress appraisals, social relations, and achievements were examined among 8796 participants from Costa Rica, Germany, Poland, Turkey, and the USA. Across countries, the findings provide evidence for associations between perceived general self‐efficacy and the selected variables. The highest positive associations were with optimism, self‐regulation, and self‐esteem, whereas the highest negative associations emerged with depression and anxiety. Academic performance is also associated with self‐efficacy as hypothesized. The replication across languages or cultures adds significance to these findings. The relations between self‐efficacy and other personality measures remained stable across cultures and samples. Thus, perceived general self‐efficacy appears to be a universal construct that yields meaningful relations with other psychological constructs. 相似文献
127.
Klusmann V Evers A Schwarzer R Heuser I 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2011,18(3):328-339
In this study we addressed the subjective benefits of activity interventions that were designed to improve cognitive fitness in old age. Two hundred and fifty-nine women (aged 70-93 years) were randomized to participate in an exercise or a computer course or a control condition for 6 months. Subjective ratings of the perceived change of cognitive and physical fitness components were captured before, during, after the intervention interval, and at a 10-month follow-up. Positive and negative affect levels and objective cognitive fitness parameters served as possible covariates. Multilevel modeling revealed that the computer group rated memory and concentration as having improved at 4 months and again at 6 months. The exercise group, in contrast, perceived physical capacities as maintained or improved. The characteristics of the activity experience seem to determine the perceived fitness changes. We conclude that actual learning experiences improve one's self-concept of abilities. 相似文献
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According to the seductive details (SD) effect, interesting, but irrelevant information in learning materials reduces learning outcomes. Basic research suggests that subjects in positive mood are more distractible by task‐irrelevant stimuli than subjects in negative mood. Hence, mood could moderate the SD effect. We tested this assumption by comparing eye movements to seductive pictures in participants in positive versus negative mood. As expected, participants in positive mood fixated pictures longer and more frequently than participants in negative mood, which can be interpreted in terms of mood‐based higher distractibility. However, this did not translate to a more pronounced SD effect in the learning test. Unexpectedly, there was no SD effect in either mood condition. We discuss implications of the eye‐tracking data as well as potential reasons for the nonexistent SD effect in our study. 相似文献
130.