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   11866篇
  免费   540篇
  国内免费   2篇
  12408篇
  2023年   78篇
  2022年   79篇
  2021年   135篇
  2020年   196篇
  2019年   263篇
  2018年   327篇
  2017年   358篇
  2016年   362篇
  2015年   295篇
  2014年   335篇
  2013年   1429篇
  2012年   515篇
  2011年   549篇
  2010年   337篇
  2009年   389篇
  2008年   516篇
  2007年   473篇
  2006年   427篇
  2005年   393篇
  2004年   401篇
  2003年   388篇
  2002年   363篇
  2001年   202篇
  2000年   196篇
  1999年   193篇
  1998年   184篇
  1997年   135篇
  1996年   124篇
  1995年   132篇
  1994年   117篇
  1993年   93篇
  1992年   116篇
  1991年   113篇
  1990年   114篇
  1989年   113篇
  1988年   107篇
  1987年   82篇
  1986年   100篇
  1985年   124篇
  1984年   105篇
  1983年   100篇
  1982年   88篇
  1981年   77篇
  1980年   85篇
  1979年   63篇
  1978年   84篇
  1977年   69篇
  1976年   70篇
  1975年   68篇
  1974年   68篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
Immigrant job applicants are often not fluent in the majority language. This raises the question whether selectors adjust their decision strategy when selecting immigrants. In two field studies (N = 1,949 and N = 156), we examined the decision strategies of professional selectors. Selectors used differential strategies, giving less weight to the test scores and impression scores of immigrants. Dutch language proficiency served as a moderator variable; test scores were considered less important in the employment recommendation especially for immigrants with low language skills. Yet professional selectors also used similar strategies for different groups; the same test scores led to the same recommendations, regardless of ethnicity. In sum, personnel selectors adjusted their decision strategy for immigrants, but this did not lead to immigrants receiving higher recommendations than majority applicants with similar test scores.  相似文献   
942.
Children are able to distinguish between regular events that can occur in everyday reality and magical events that are ordinarily impossible. How do children respond to a person who brings about magical as compared with ordinary outcomes? In two studies, we tested children's acceptance of informants' claims when the informants had produced either magical or ordinary outcomes. In Study 1, children's skeptical or credulous stance toward magic predicted their endorsement of the claims made by the informants. Children who were more credulous were likely to accept information from the informant who had produced magical outcomes. In Study 2, a brief manipulation was only partially effective in changing children's initial stance toward magic. Their initial stance toward magic continued to predict their acceptance of information from the informant who had produced magical outcomes.  相似文献   
943.
The personality traits neuroticism and extraversion are differentially related to socioemotional functioning and susceptibility to affective disorders. However, the neurobiology underlying this differential relationship is still poorly understood. This discrepancy could perhaps best be studied by adopting a brain connectivity approach. Whereas the amygdala has repeatedly been linked to neuroticism and extraversion, no study has yet focused on the intrinsic functional architecture of amygdala-centered networks in relation to both traits. To this end, seed-based correlation analysis was employed to reveal amygdala resting-state functional connectivity (RSFC) and its associations with neuroticism and extraversion in 50 healthy participants. Higher neuroticism scores were associated with increased amygdala RSFC with the precuneus, and decreased amygdala RSFC with the temporal poles, insula, and superior temporal gyrus (p < .05, cluster corrected). Conversely, higher extraversion scores were associated with increased amygdala RSFC with the putamen, temporal pole, insula, and several regions of the occipital cortex (p < .05, cluster corrected). The shifts in amygdala RSFC associated with neuroticism may relate to the less-adaptive perception and processing of self-relevant and socioemotional information that is frequently seen in neurotic individuals, whereas the amygdala RSFC pattern associated with extraversion may relate to the heightened reward sensitivity and enhanced socioemotional functioning in extraverts. We hypothesize that the variability in amygdala RSFC observed in the present study could potentially link neuroticism and extraversion to the neurobiology underlying increased susceptibility or resilience to affective disorders.  相似文献   
944.
945.
Anxiety and depression frequently co-occur and may share similar deficits in the processing of emotional stimuli. High anxiety is associated with a failure in the acquisition and extinction of fear conditioning. Despite the supposed common deficits, no research has been conducted on fear acquisition and extinction in depression. The main aim of the present study was to investigate and compare fear acquisition and extinction in anxiety- and depression-prone participants. Non-clinical anxious, depressive, anxious-depressive and control participants performed a fear discrimination task. During acquisition, the CS+ predicted an aversive event (unconditioned stimulus, US) and the CS? safety (no US). During extinction, the CS+ was no longer followed by the US, rendering it (temporarily) into a safety signal. On each CS participants rated their US expectancy; skin conductance responses (SCRs) were measured throughout. The expectancy scores indicated that high anxiety resulted in less safety learning during acquisition and extinction; no effect of depression was observed. SCRs showed that high-anxiety persons displayed less discrimination learning (CS+ minus CS?) during acquisition than low-anxiety persons. During extinction, high-depression persons demonstrated more discriminative SCR than low-depression persons. The observed discrepancies in response patterns of high-anxiety and -depression persons seem to indicate distinctive information processing of emotional stimuli.  相似文献   
946.
Emerging adults are at substantial risk for developing or worsening psychopathology and university students appear to be particularly vulnerable. Interventions targeted at these young adults that can mitigate transdiagnostic causal risk factors or burgeoning mental health problems have the potential to make a large impact. We aimed to develop and pilot test an accessible, single-session, transdiagnostic group intervention with the goals of enhancing emotion regulation skills and reducing risk for mental health problems in graduate students. The intervention included psychoeducation, skills instruction (e.g., mindful emotion awareness, cognitive flexibility, countering emotion-driven behaviors), group discussion, and supervised practice based on content from the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders. The pilot program demonstrated strong feasibility and acceptability. Baseline, 1-month, and 3-month follow-up surveys also suggested benefits for reducing emotional avoidance and suppression, increasing use of cognitive reappraisal, and reducing symptoms of depression and neuroticism. Graduate students have seldom been the beneficiaries of university-based intervention and prevention research. Furthermore, most college and university mental health centers do not have the capacity to provide psychoeducation, preventative, or early intervention services to the many students who need or could benefit from them. Results suggest that future iterations of this intervention could address such barriers to meaningfully supporting emerging adults in graduate school.  相似文献   
947.
Previous research has focused on the importance of leaders being seen to be of the group (i.e. to be prototypical of a group) but less on the impact of leaders' own degree of identification with the group. Also, little is known about the combined impact of leader prototypicality and leader identification on followers' responses. This paper reports two studies that address these lacunae. Study 1 shows experimentally that perceived leader identification and prototypicality interact to determine followers' personal identification with leaders and their perceptions of leader charisma. Findings indicate that high identification can compensate for low prototypicality such that high‐identified leaders are able to inspire followership when leaders are low prototypical. Study 2 replicates these findings in the field by examining followers' responses to workgroup leaders. In addition, results demonstrate that the aforementioned responses are more pronounced for highly identified followers. The present research extends social identity theorizing by demonstrating that leaders' inability to inspire followership derives as much from their failure to project a sense of ‘we’ and ‘us’ as part of their self‐concept as from a failure to exemplify group‐typical attributes. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
948.
Physical cognition has generally been assessed in tool-using species that possess a relatively large brain size, such as corvids and apes. Parrots, like corvids and apes, also have large relative brain sizes, yet although parrots rarely use tools in the wild, growing evidence suggests comparable performances on physical cognition tasks. It is, however, unclear whether success on such tasks is facilitated by previous experience and training procedures. We therefore investigated physical comprehension of object relationships in two non-tool-using species of captive neotropical parrots on a new means-end paradigm, the Trap-Gaps task, using unfamiliar materials and modified training procedures that precluded procedural cues. Red-shouldered macaws (Diopsittaca nobilis) and black-headed caiques (Pionites melanocephala) were presented with an initial task that required them to discriminate between pulling food trays through gaps while attending to the respective width of the gaps and size of the trays. Subjects were then presented with a novel, but functionally equivalent, transfer task. Six of eight birds solved the initial task through trial-and-error learning. Four of these six birds solved the transfer task, with one caique demonstrating spontaneous comprehension. These findings suggest that non-tool-using parrots may possess capacities for sophisticated physical cognition by generalising previously learned rules across novel problems.  相似文献   
949.
950.
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