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   3557篇
  免费   159篇
  国内免费   2篇
  2020年   49篇
  2019年   74篇
  2018年   97篇
  2017年   88篇
  2016年   94篇
  2015年   72篇
  2014年   94篇
  2013年   393篇
  2012年   120篇
  2011年   142篇
  2010年   88篇
  2009年   89篇
  2008年   128篇
  2007年   111篇
  2006年   114篇
  2005年   102篇
  2004年   84篇
  2003年   99篇
  2002年   108篇
  2001年   96篇
  2000年   86篇
  1999年   69篇
  1998年   42篇
  1997年   37篇
  1996年   41篇
  1995年   43篇
  1994年   40篇
  1993年   33篇
  1992年   49篇
  1991年   51篇
  1990年   46篇
  1989年   48篇
  1988年   36篇
  1987年   37篇
  1986年   46篇
  1985年   43篇
  1984年   43篇
  1983年   33篇
  1982年   41篇
  1981年   35篇
  1979年   40篇
  1978年   31篇
  1975年   35篇
  1974年   34篇
  1973年   29篇
  1972年   31篇
  1970年   39篇
  1968年   35篇
  1967年   42篇
  1966年   33篇
排序方式: 共有3718条查询结果,搜索用时 15 毫秒
251.
252.
I argue in favour of the central claim of virtue-ethical accounts of right action: that right action is virtuous action. First, I disambiguate this claim and argue for a specific interpretation of it. Second, I provide reasons to prefer target-centred over both agent-centred and motive-centred accounts of virtuous action. Third, I argue that an action is right if, only if, and because it is overall virtuous. Finally, I respond to important arguments to the contrary.  相似文献   
253.
Sierra Leone has endured a turbulent history, including a decadelong civil war and the devastation of Ebola virus disease. Despite the psychological consequences of such events, only limited therapeutic services are available. The authors review mental health services in Sierra Leone and document the emergence of counseling as a profession in the face of challenges. They conclude by highlighting the multiple contributions that professional counselors can make to address critical mental health needs in Sierra Leone.  相似文献   
254.
Working memory (WM) plays an important role in children’s learning and is linked to later academic and occupational success. Understanding the early development of WM can provide critical clues regarding the underlying structure of executive functions and how they change over the life span. The main objectives of the present study were to (1) investigate age differences in the development of three components of WM (retrieval, substitution, transformation) on a novel preschool WM measure and (2) explore whether findings are consistent with the hierarchical model of WM development by examining perseverative and non-perseverative WM errors. Perseverative errors were hypothesized to be more strongly associated with problems substituting and transforming a representation held in mind, whereas non-perseverative errors were hypothesized to be associated with problems maintaining a representation in mind. Participants were 64 children ranging in age from 3.0 to 5.6 years. The results provide evidence for the sensitivity of the WM task to age differences from 3 to 5 years and support for the hierarchical model of WM development.  相似文献   
255.
This study examines perceived stress and its relationship to depressive symptoms, life changes and functional capacity in a large sample of individuals who are positive for the Huntington disease (HD) gene expansion but not yet diagnosed. Participants were classified by estimated proximity to HD diagnosis (far, mid, near) and compared with a non-gene-expanded comparison group. Persons in the mid group had the highest stress scores. A significant interaction between age and time since HD genetic testing was also found. Secondary analyses using data from a different data collection point and including a diagnosed group showed the highest stress scores in the diagnosed group. Possible explanations and implications are discussed.  相似文献   
256.
257.
The personality traits of neuroticism and agreeableness are consistently related to marital quality, influencing the individual's own (i.e., actor effect) and the spouse's marital quality (i.e., partner effect). However, this research has almost exclusively relied on self-reports of personality, despite the fact that spouse ratings have been found to have incremental validity over self-reports for a variety of other important outcomes. In a study of 300 middle-aged and older married couples, we examined the incremental validity of spouse ratings of neuroticism and agreeableness in predicting concurrent levels of self-reported marital quality, observations of behavior during a marital disagreement task, and depressive symptoms. Neuroticism and agreeableness had expected actor and partner effects on each of these outcomes. Spouse ratings of these traits demonstrated incremental validity in estimates of actor and partner effects on marital quality, marital behavior, and depressive symptoms. Results suggest that spouse ratings of personality may be important additions to the typical reliance on self-reports for research and clinical assessment in marriage.  相似文献   
258.
The International Standards for Cytogenomic Arrays (ISCA) Consortium is a worldwide collaborative effort dedicated to optimizing patient care by improving the quality of chromosomal microarray testing. The primary effort of the ISCA Consortium has been the development of a database of copy number variants (CNVs) identified during the course of clinical microarray testing. This database is a powerful resource for clinicians, laboratories, and researchers, and can be utilized for a variety of applications, such as facilitating standardized interpretations of certain CNVs across laboratories or providing phenotypic information for counseling purposes when published data is sparse. A recognized limitation to the clinical utility of this database, however, is the quality of clinical information available for each patient. Clinical genetic counselors are uniquely suited to facilitate the communication of this information to the laboratory by virtue of their existing clinical responsibilities, case management skills, and appreciation of the evolving nature of scientific knowledge. We intend to highlight the critical role that genetic counselors play in ensuring optimal patient care through contributing to the clinical utility of the ISCA Consortium's database, as well as the quality of individual patient microarray reports provided by contributing laboratories. Current tools, paper and electronic forms, created to maximize this collaboration are shared. In addition to making a professional commitment to providing complete clinical information, genetic counselors are invited to become ISCA members and to become involved in the discussions and initiatives within the Consortium.  相似文献   
259.
The insanity defense presents many difficult questions for the legal system. It attracts attention beyond its practical significance (it is seldom used successfully) because it goes to the heart of the concept of legal responsibility. ??Not guilty by reason of insanity?? generally requires that as a result of mental illness the defendant was unable to distinguish right from wrong at the time of the crime. The many difficult and complex questions presented by the insanity defense have led some in the legal community to hope that neuroscience might help resolve some of these problems, but that hope is not likely to be realized.  相似文献   
260.
Patterson SY  Smith V  Mirenda P 《Autism》2012,16(5):498-522
Aim: The purpose of this systematic review was to examine research utilizing single subject research designs (SSRD) to explore the effectiveness of interventions designed to increase parents' ability to support communication and social development in children with autism spectrum disorders (ASDs). Method: Included studies were systematically assessed for methodological quality (Logan et al., 2008; Smith et al., 2007) and intervention effects. Data examining participant characteristics, study methodology, outcomes, and analysis were systematically extracted. Results: Eleven SSRD parent-training intervention studies examining 44 participants with ASD were included. Overall, the studies were of moderate quality and reported increases in parent skills and child language and communication outcomes. Interpretation: The results supported by improvement rate difference (IRD) analysis indicated several interventions demonstrated positive effects for both parent and child outcomes. However, limited generalization and follow-up data suggested only one intervention demonstrated parents' accurate and ongoing intervention implementation beyond training.  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