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   5028篇
  免费   302篇
  国内免费   10篇
  2023年   64篇
  2022年   51篇
  2021年   79篇
  2020年   154篇
  2019年   153篇
  2018年   201篇
  2017年   207篇
  2016年   220篇
  2015年   122篇
  2014年   163篇
  2013年   581篇
  2012年   259篇
  2011年   266篇
  2010年   172篇
  2009年   157篇
  2008年   181篇
  2007年   212篇
  2006年   177篇
  2005年   167篇
  2004年   147篇
  2003年   122篇
  2002年   138篇
  2001年   98篇
  2000年   70篇
  1999年   75篇
  1998年   45篇
  1997年   39篇
  1996年   38篇
  1995年   53篇
  1994年   54篇
  1993年   40篇
  1992年   53篇
  1991年   46篇
  1990年   37篇
  1989年   38篇
  1988年   40篇
  1987年   39篇
  1986年   37篇
  1985年   40篇
  1984年   27篇
  1983年   26篇
  1982年   30篇
  1980年   26篇
  1979年   38篇
  1978年   38篇
  1977年   25篇
  1976年   23篇
  1974年   34篇
  1973年   31篇
  1971年   22篇
排序方式: 共有5340条查询结果,搜索用时 31 毫秒
991.
Despite the critical role of the goal difficulty construct in predicting the effects of goals on task performance, the choice of goal difficulty measure(s) has not played a prominent role in goal setting research. The current laboratory study, using 92 college students, examines three operationalizations of the goal difficulty construct: assigned goal level (objective or direct measure), self-referenced goal difficulty perception. and an externally-referenced goal difficulty perception. The results clearly demonstrated that the choice of a goal difficulty measure matters in relation to other constructs in goal setting theory. Furthermore, it was found that the externally-referenced goal difficulty perception measure corresponded best with assigned goal level.  相似文献   
992.
In this article we investigate relations between general and specific measures of self-rated affect and markers of Neuroticism, Extraversion, Openness to Experience, Agreeableness, and Conscientiousness. Replicating previous research, we found strong and pervasive associations between Neuroticism, its facets, and the various negative affects; and between Extraversion, its facets, and the positive affects. Conscientiousness also had a significant, independent relation with general positive affect, but this effect was entirely due to the specific affect of attentiveness, which was more strongly related to Conscientiousness than Extraversion. Conversely, only the achievement facet of Conscientiousness correlated broadly with the positive affects. Finally, hostility had a strong independent association with (low) Agreeableness. The results for Neuroticism and Extraversion further clarify the temperamental basis of these higher order trait dimensions; whereas those obtained for Agreeableness and Conscientiousness illustrate the importance of examining personality-affect relations at the lower order level.  相似文献   
993.
Descriptions and depictions of environments   总被引:5,自引:0,他引:5  
  相似文献   
994.
Studied contributions of maternal psychological distress, family stress load, maternal and family risk factors, and family coping strategies in predicting behavior problems in 441 inner-city black primary-grade children. Results indicated maternal psychological distress and high family stress load were associated with high child behavior problems. Family coping strategies offered no protection against risk, while coping with life difficulties by reframing them was detrimental to child behavioral adjustment. Active help-seeking strategies (i.e., family mobilization, acquiring social supports) served to moderate the effects of maternal psychological distress and family risk attributes for boys, but exacerbated the effects of dysfunctional maternal social and psychiatric histories for girls. Implications for understanding vulnerability and resilience in inner-city black children and recommendations for future research are discussed.  相似文献   
995.
Prosodic Effects in Minimal Attachment   总被引:2,自引:0,他引:2  
This experiment explores the role of prosodic cues in resolving temporary morphosyntactic ambiguities in spoken language comprehension. Using a cross-modal naming task, we find that prosodic cues are as effective as overt lexical cues in controlling how the listener resolves attachment ambiguities. This suggests that prosodic factors can affect the early stages of parsing and interpretation.  相似文献   
996.
We permitted male prairie and montane voles (Microtus ochrogaster and M. montanus) five thrusts, without ejaculation, with a female at variable times after a 1st male ejaculated. In both prairie and montane voles, there were fewer sperm, in relation to control conditions, in the female's tract 1 hr after ejaculation if the female received thrusts immediately or 15 min after the ejaculate. There was no such effect after a 50-min delay. There was no significant decrease in litter production in prairie voles caused by thrusts delivered either immediately or after a 15-min delay. Sperm transport in these species is susceptible to disruption for a longer period than in deer mice or rats. The proposal that the postejaculatory interval protects a male from disrupting its own sperm transport (the PEI matching law) appears not to hold for these species.  相似文献   
997.
998.
999.
This study examined the relations among optimism, coping, functional status, and psychological adjustment in 75 adults diagnosed with cancer. Both the positive and the negative aspects of psychological adjustment were assessed. All participants had been diagnosed with advanced stages of cancer (i.e., Stages II, III, and IV). Participants completed three assessments across a 4-month time period. Both optimism and coping were associated with psychological adjustment, even after controlling for functional status and prior adjustment. Additionally, optimism and coping were differentially related to distress and well-being. Optimism was strongly and positively associated with well-being and inversely related to distress. Escape-Avoidance coping was positively associated with distress and Accepting Responsibility coping was negatively associated with well-being. Comparisons between the current and prior studies indicated that individuals who are diagnosed with more advanced stages of cancer or who have survived bone marrow transplantation exhibit higher levels of optimism than do healthy individuals and individuals with early-stage disease.  相似文献   
1000.
The efficacy of multimedia-based training in producing increased learning was evaluated. Two multimedia software packages were compared with live or videotaped lectures on the same material. Results differed by type of student (low or high initial knowledge) and type of program. Multimedia training programs may need to provide more aid to students with less initial knowledge in the training domain. In addition, the effects of multimedia may be subtle and therefore require rigorous evaluation.  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