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   2333篇
  免费   126篇
  2023年   17篇
  2022年   23篇
  2021年   19篇
  2020年   47篇
  2019年   74篇
  2018年   81篇
  2017年   81篇
  2016年   81篇
  2015年   81篇
  2014年   84篇
  2013年   267篇
  2012年   160篇
  2011年   163篇
  2010年   92篇
  2009年   82篇
  2008年   106篇
  2007年   134篇
  2006年   88篇
  2005年   90篇
  2004年   97篇
  2003年   94篇
  2002年   89篇
  2001年   32篇
  2000年   31篇
  1999年   37篇
  1998年   33篇
  1997年   28篇
  1996年   28篇
  1995年   24篇
  1994年   23篇
  1993年   24篇
  1992年   10篇
  1991年   15篇
  1990年   8篇
  1989年   14篇
  1988年   10篇
  1987年   7篇
  1986年   9篇
  1985年   9篇
  1984年   8篇
  1983年   6篇
  1982年   5篇
  1981年   5篇
  1978年   4篇
  1975年   5篇
  1974年   5篇
  1973年   4篇
  1972年   3篇
  1971年   3篇
  1970年   4篇
排序方式: 共有2459条查询结果,搜索用时 15 毫秒
161.
Autism spectrum disorder (ASD) is characterized by rich heterogeneity in vocabulary knowledge and word knowledge that is not well accounted for by current cognitive theories. This study examines whether individual differences in vocabulary knowledge in ASD might be partly explained by a difficulty with consolidating newly learned spoken words and/or integrating them with existing knowledge. Nineteen boys with ASD and 19 typically developing (TD) boys matched on age and vocabulary knowledge showed similar improvements in recognition and recall of novel words (e.g. ‘biscal’) 24 hours after training, suggesting an intact ability to consolidate explicit knowledge of new spoken word forms. TD children showed competition effects for existing neighbors (e.g. ‘biscuit’) after 24 hours, suggesting that the new words had been integrated with existing knowledge over time. In contrast, children with ASD showed immediate competition effects that were not significant after 24 hours, suggesting a qualitative difference in the time course of lexical integration. These results are considered from the perspective of the dual‐memory systems framework.  相似文献   
162.
163.
The protection of offspring against predators and competitors is especially important in organisms using spatially separated breeding resources, impeding the offspring’s chances to escape. One example of such isolated reproductive resources are phytotelmata (small water bodies in plant axils), exploited by the Neotropical poison frog Ranitomeya variabilis (Dendrobatidae) for both clutch and tadpole deposition. Because poison frog tadpoles are often cannibalistic, parents tend to avoid deposition with conspecifics. Previous studies have shown that this avoidance is based on chemical cues produced by conspecific tadpoles. Further, cues produced by phylogenetically less-related tadpoles (Bufonidae) were avoided for clutch but not tadpole depositions. We analyzed how the different responses to tadpole cues are triggered. We tested the reactions of parental R. variabilis to tadpole cues of species differing in two aspects: whether or not they are dendrobatids, and whether or not they reproduce in phytotelmata. We found that for clutch deposition, tadpole cues were always avoided, i.e., all tadpoles were treated by the frogs as if they pose a danger to the eggs. However, responses varied for tadpole depositions: while dendrobatid larvae living in phytotelmata were avoided, those breeding in streams were not. Non-poison frog tadpoles were ignored when associated with habitat other than phytotelmata, but they were preferred when living in phytotelmata. This suggests that both phylogeny and tadpole habitat are important triggers for the decisions made by R. variabilis. Only tadpoles using the same breeding resources are considered as relevant for the frog’s own larvae (i.e., as a potential danger or food resource), while further decisions are related to evolutionary relationship.  相似文献   
164.
Motivation and Emotion - Mourning constitutes an important human emotion, which might cause—among other things—major depressive symptoms when lasting for too long. To date, no study...  相似文献   
165.

Communication during a combat deployment has changed significantly in current times. Couples can now communicate with each other frequently and through multiple modes. Despite this greater availability of communication options, there remain unanswered questions related to how healthy deployment communication is best achieved between couples, particularly regarding navigating the uncertainty of deployment. In this qualitative study, we report on the experiences of 31 National Guard couples who endured a combat deployment in support of Operation Enduring Freedom. Couples were interviewed three months after the soldier returned from deployment. Through the lens of relational turbulence theory, we provide a conceptual framework related to effective and non-effective deployment communication, along with structural communication barriers in the military that may negatively affect the mental well-being of partners. Finally, we provide recommendations to guide couples through these difficult deployments.

  相似文献   
166.
Research on Child and Adolescent Psychopathology - Affective instability is common during adolescence, but at high levels it is associated with a variety of internalizing and externalizing...  相似文献   
167.
Journal of Happiness Studies - Researchers have emphasized the detrimental effects of COVID-19 on mental health, but less attention has been given to personal strengths promoting resilience during...  相似文献   
168.
Research is beginning to reveal negative effects of perceived discrimination on romantic relationship quality among members of devalued groups, yet potential mechanisms driving these effects remain underexplored. In the current work, we examined the mediating role of self‐image. Data from two cross‐sectional studies with samples composed of racial minorities (Study 1) and sexual minorities (Study 2) provided support for a model, whereby the negative association between perceived discrimination and romantic relationship quality is partially mediated by impaired self‐image. As proposed, results from bootstrapping analyses revealed significant indirect effects of perceived discrimination on relationship quality through self‐image. Implications of social identity threats for the romantic relationships and families of members of stigmatized groups are discussed along with other potential mechanisms.  相似文献   
169.
Lisa E. Dahill 《Dialog》2014,53(3):250-258
Viewing modern life from the perspective and world of those whose lives are treated as expendable commodities in our current economic systems—humans and creatures of every other species—creates, Bonhoeffer asserts, the most reliable hermeneutical standpoint for seeing and living in reality. This essay attempts to fashion in broad strokes a Christian theology of creaturely re‐engagement: learning to live again “way below,” in literal and metaphoric touch with reality. I assert that Bonhoeffer's theology of I/Thou encounter as the means of humans’ ethical formation has the potential to ground a broader theology of inter‐species encounter as well.  相似文献   
170.
Families play an important role in the lives of individuals with mental illness. Coping with the strain of shifting roles and multiple challenges of caregiving can have a huge impact. Limited information exists regarding race-related differences in families’ caregiving experiences, their abilities to cope with the mental illness of a loved one, or their interactions with mental health service systems. This study examined race-related differences in the experiences of adults seeking to participate in the National Alliance on Mental Illness Family-to-Family Education Program due to mental illness of a loved one. Participants were 293 White and 107 African American family members who completed measures of problem- and emotion-focused coping, knowledge about mental illness, subjective illness burden, psychological distress, and family functioning. Multiple regression analyses were used to determine race-related differences. African American caregivers reported higher levels of negative caregiving experiences, less knowledge of mental illness, and higher levels of both problem-solving coping and emotion-focused coping, than White caregivers. Mental health programs serving African American families should consider targeting specific strategies to address caregiving challenges, support their use of existing coping mechanisms and support networks, and increase their knowledge of mental illness.  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