首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2881篇
  免费   165篇
  2023年   37篇
  2022年   57篇
  2021年   80篇
  2020年   109篇
  2019年   92篇
  2018年   167篇
  2017年   168篇
  2016年   141篇
  2015年   79篇
  2014年   103篇
  2013年   381篇
  2012年   219篇
  2011年   222篇
  2010年   136篇
  2009年   69篇
  2008年   187篇
  2007年   139篇
  2006年   120篇
  2005年   67篇
  2004年   59篇
  2003年   68篇
  2002年   42篇
  2001年   26篇
  2000年   35篇
  1999年   20篇
  1998年   17篇
  1997年   13篇
  1996年   6篇
  1995年   7篇
  1994年   8篇
  1993年   12篇
  1992年   7篇
  1991年   17篇
  1990年   8篇
  1989年   10篇
  1988年   9篇
  1987年   8篇
  1986年   7篇
  1985年   11篇
  1984年   5篇
  1981年   6篇
  1980年   6篇
  1979年   5篇
  1972年   6篇
  1971年   6篇
  1969年   3篇
  1968年   8篇
  1967年   4篇
  1966年   7篇
  1965年   8篇
排序方式: 共有3046条查询结果,搜索用时 15 毫秒
991.
Emotional stimuli have been repeatedly demonstrated to be better remembered than neutral ones. The aim of the present study was to test whether this advantage in memory is mainly produced by the affective content of the stimuli or it can be rather accounted for by factors such as semantic relatedness or type of encoding task. The valence of the stimuli (positive, negative and neutral words that could be either semantically related or unrelated) as well as the type of encoding task (focused on either familiarity or emotionality) was manipulated. The results revealed an advantage in memory for emotional words (either positive or negative) regardless of semantic relatedness. Importantly, this advantage was modulated by the encoding task, as it was reliable only in the task which focused on emotionality. These findings suggest that congruity with the dimension attended at encoding might contribute to the superiority in memory for emotional words, thus offering us a more complex picture of the underlying mechanisms behind the advantage for emotional information in memory.  相似文献   
992.
Three experiments assessed the role of verbal and visuo‐spatial working memory in supporting long‐term repetition priming for written words. In Experiment 1, two priming tasks (word stem completion and category‐exemplar production) were included with three levels of load on working memory: (1) without memory load, (2) memory load that involved storing a string of six digits, and (3) memory load that involved storing a graphic shape. Experiments 2 and 3 compared the effects of a verbal (Experiment 2) or a visual (Experiment 3) working memory load at encoding on both an implicit (word stem completion) and an explicit test (cued recall). The results show no effect of memory load in any of the implicit memory tests, suggesting that priming does not rely on working memory resources. By contrast, loading working memory at encoding causes a significant disruptive effect on the explicit memory test for words when the load is verbal but not visual.  相似文献   
993.
ABSTRACT

Pairs of emotional (pleasant or unpleasant) and neutral scenes were presented peripherally (≥5° away from fixation) during a central letter-discrimination task. Selective attentional capture was assessed by means of eye movement orienting, i.e., probability of first fixating a scene and the time until first fixation. Static and dynamic visual saliency values of the scenes were computationally modelled. Results revealed selective orienting to both pleasant and unpleasant relative to neutral scenes. Importantly, such effects remained in the absence of visual saliency differences, even though saliency influenced eye movements. This suggests that selective attention to emotional scenes is genuinely driven by the processing of affective significance in extrafoveal vision.  相似文献   
994.
In case of special engineering projects of important relevance it is interesting to pay attention to several possible risks; some of them are in the field of morality or ethics. Due to the social importance of these risks, additional considerations or even additional warranties are justified.  相似文献   
995.
Abstract

Burnout syndrome has been described by different authors as a reaction to work stress. Hence both the role stress components–role ambiguity and role conflict–appear in the literature as burnout antecedent variables. The correlation between these variables is positive. On the other hand, the work social support (from supervisors and colleagues) is a variable with influence on both role stress and burnout, so the people who perceive higher work social support feel lower role stress and lower burnout than the people who perceive lower social support. In this study we present the results of a correlational study of role ambiguity, role conflict, burnout levels (tested with Maslach Burnout Inventory), and the work social support effects on the relations. The sample are 102 nursing professionals, 24 per cent males and 76 per cent females. The results present a positive correlation between both role ambiguity and role conflict, and the emotional exhaustion scale and depersonalization scale, and a negative correlation between both role conflict and role ambiguity, and reduced personal accomplishment and work social support influence on the relations.  相似文献   
996.
This study focuses on how converts and their close acquaintances perceive changes in personality characteristics after religious conversion and possible demographic influences of these perceptions. Sixty Slovakian respondents self-defined as having experienced conversions rated themselves twice on measures of Big Five personality traits, self-esteem, and meaningfulness in life. The first rating provided retrospective information concerning pre-conversion conditions and the second rating obtained data reflecting the convert's present self-understanding. In addition, every convert was rated on the same characteristics by someone who knew the person well during both pre- and post-conversion times. The convert and the rater both provided demographic information (age, education, religiosity, relationship to conversions and converts etc.). Analyses showed that the converts perceived several personality changes: neuroticism decreased while self-esteem, agreeableness, conscientiousness, and extraversion increased. They also reported a large increase in meaningfulness. Perceived changes were in part related to education level and age for converts, and to religiosity in both converts and close persons, suggesting a retrospective bias.  相似文献   
997.
ABSTRACT

Mild Cognitive Impairment (MCI) is characterized by episodic memory deficits, while aspects of working memory may also be implicated, but studies into this latter domain are scarce and results are inconclusive. Using a computerized search paradigm, this study compares 25 young adults, 25 typically aging older adults and 15 amnestic MCI patients as to their working-memory capacities for object-location information and potential differential effects of memory load and additional context cues. An age-related deficit in visuospatial working-memory maintenance was found that became more pronounced with increasing task demands. The MCI group additionally showed reduced maintenance of bound information, i.e., object-location associations, again especially at elevated memory load. No effects of contextual cueing were found. The current findings indicate that working memory should be considered when screening patients for suspected MCI and monitoring its progression.  相似文献   
998.
999.
Evolutionary arms races between humans and parasites resulted in a set of behavioral adaptations that serve as parasite-avoidance mechanisms. We investigated associations among reported health of the respondent, antiparasite behavior, and sensitivity to disgust and fear of disease-relevant and irrelevant animals. Ninety-seven participants (15–19 years old) rated their fear and disgust at 25 colorful pictures of disease-relevant and disease-irrelevant invertebrates. Consistent with previous work, we found that participants reported greater fear and disgust of disease-relevant invertebrates relative to disease-irrelevant invertebrates. Better perceived health correlated with lower fear of disease-relevant invertebrates. Sensitivity to disgust correlated with reported antiparasite behaviors. Contrary to expectations, we found a positive correlation between antiparasite behavior and reported health, which suggests that antiparasite behavior influences perceived health (but not vice versa), and we found that males perform more antiparasite behaviors than females. These results support the idea that disgust and fear of disease-relevant objects are adaptive emotions that prevent contact with contagious objects, especially in individuals with low perceived health.  相似文献   
1000.
The purpose of this study was to examine the role of situational and dispositional factors in contributing to competitive task involvement and performance in young tennis players. One hundred fifty-one adolescent tennis players and their coaches participated in the study. Participants responded to instruments measuring pre-game dispositional goal orientations and perceptions of the motivational climate and post-game task involvement in the competition by assessing concentration, loss of self-consciousness, and autotelic experience, perceptions of coach-initiated motivational climate in competition, and self-evaluation of game performance. In addition, coaches evaluated the players’ performance. Results showed that task involvement was predicted by players’ perceptions of a coach-initiated learning motivational climate in competition. Loss of self-consciousness was predicted by the players’ perceptions of a coach-initiated performance climate in competition. Finally, coaches’ and players’ assessment of performance were predicted by autotelic experience, concentration, and by perception of coach-initiated learning and performance orientation in competition.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号