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   7451篇
  免费   451篇
  国内免费   3篇
  2021年   65篇
  2020年   127篇
  2019年   145篇
  2018年   197篇
  2017年   246篇
  2016年   240篇
  2015年   179篇
  2014年   203篇
  2013年   835篇
  2012年   333篇
  2011年   375篇
  2010年   225篇
  2009年   237篇
  2008年   303篇
  2007年   306篇
  2006年   271篇
  2005年   272篇
  2004年   261篇
  2003年   227篇
  2002年   246篇
  2001年   121篇
  2000年   143篇
  1999年   138篇
  1998年   106篇
  1997年   95篇
  1996年   107篇
  1995年   99篇
  1994年   87篇
  1993年   69篇
  1992年   95篇
  1991年   74篇
  1990年   64篇
  1989年   66篇
  1988年   63篇
  1987年   55篇
  1986年   62篇
  1985年   80篇
  1984年   70篇
  1983年   60篇
  1982年   82篇
  1981年   80篇
  1980年   58篇
  1979年   65篇
  1978年   52篇
  1977年   76篇
  1976年   52篇
  1975年   57篇
  1974年   48篇
  1973年   58篇
  1972年   46篇
排序方式: 共有7905条查询结果,搜索用时 15 毫秒
301.
Neuropsychology Review - Attention problems are thought to be a hallmark feature of prenatal alcohol exposure (PAE). Despite decades of research however, these findings have never been pooled to...  相似文献   
302.
Journal of Behavioral Education - The aim of this study was to investigate the effect of a precision teaching (PT) framework on the mathematical ability of students with intellectual and...  相似文献   
303.

In current classification systems, selective mutism (SM) is included in the broad anxiety disorders category. Indeed, there is abundant evidence showing that anxiety, and social anxiety in particular, is a prominent feature of SM. In this article, we point out that autism spectrum problems in addition to anxiety problems are sometimes also implicated in SM. To build our case, we summarize evidence showing that SM, social anxiety disorder (SAD), and autism spectrum disorder (ASD) are allied clinical conditions and share communalities in the realm of social difficulties. Following this, we address the role of a prototypical class of ASD symptoms, restricted and repetitive behaviors and interests (RRBIs), which are hypothesized to play a special role in the preservation and exacerbation of social difficulties. We then substantiate our point that SM is sometimes more than an anxiety disorder by addressing its special link with ASD in more detail. Finally, we close by noting that the possible involvement of ASD in SM has a number of consequences for clinical practice with regard to its classification, assessment, and treatment of children with SM and highlight a number of directions for future research.

  相似文献   
304.
Both Classical Greek philosophy and the early Christian theology that often drew upon it reflected a tension in their understanding of essence (ο?σ?α). Was it a concrete thing, something that could assume agency and be related to, or did it refer only to the shared characteristics that reflect things and persons of a common kind? In this article I first establish that this question pertains, mutatis mutandis, to the Platonic forms, as well as to Christian concepts of essence and nature. I then argue that the Christian theology of the conciliar period sided against the reification of essence/nature, noting that their misplaced concreteness resulted in problematic doctrines. In conclusion I briefly explore how this same dynamic plays out in twentieth‐century Orthodox theology, as expressed by Sergius Bulgakov, Vladimir Lossky and John Zizioulas.  相似文献   
305.
Background/Objective: This study explored the association between active school travel (AST) and suicide attempts among adolescents in low- and middle-income countries (LMICs). Method: We used the data from the Global School-based Health Survey, including 127,097 adolescents aged 13-17 years from 34 LMICs. A self-reported survey was used to collect data on AST and suicide attempts as well as some variables. Multivariable logistic regression was performed to assess the association between AST and suicide attempts. A meta-analysis with random effects was undertaken to identify the difference in the association between AST and suicide attempts. Results: Across all the adolescents, the prevalence of AST was 37% and the prevalence of suicide attempts was 11.60%. Adolescents who engaged in AST were less likely to have suicide attempts irrespective of gender. The country-wise analysis indicated a large inconsistency in the association between AST and suicide attempt across the countries. Conclusions: AST would appear to be a protective factor for reducing suicide attempts among adolescents. However, the association between AST and suicide attempts varied greatly across the countries. Future studies should confirm the association between AST and suicide attempts.  相似文献   
306.
307.
This study investigated the specificity of diagnostic classification in two standardized systems: DSM-IV and Diagnostic Classification: Zero to Three. A sample of 82 infants aged 1–24 months suffering from various psychogenic and functional pediatric symptoms was diagnosed applying both systems. For DC: 0–3 (the Diagnostic Classification on Mental Health and Developmental Disorders of Infancy and Early Childhood), this study presents results with respect to the specificity of symptom patterns. Twelve out of 27 symptoms, specific for disorders in early infancy, showed high specificity and were significantly discriminative for the diagnostic entities. These symptoms were differentiated for frequency and severity of occurrence for each diagnosis. In the sample, DSM-IV and DC: 0–3 diagnoses were compared. Additionally, 13 items of biographical-biological data were collected (e.g., low SES combined with very young or older mothers resulted in an increased risk for psychiatric disorders in early infancy). The data provide support for the idea that the use of DC: 0–3 in early infancy may be helpful in relation to daily routines and research by increasing the range of clearly defined diagnostic entities.  相似文献   
308.
309.
310.
The question investigated in this study is how the temperament traits of strength of excitation (SE), strength of inhibition (SI), and mobility (MO) affect behaviour during the execution of computer tasks and tasks interrupting them. Several hypotheses, partly derived from the regulative theory of temperament, were tested in an experiment in which the natural environment and the types of task commonly performed by secretaries were simulated. The sample consisted of 39 female secretaries (21–64 years old). It was found that individuals high on SE and MO needed less time to resume tasks after an interruption than individuals low on these temperament traits. Interruptions similar to the main task resulted in longer resumption times for low-SE individuals. MO was negatively related to the time needed to perform the main task. A model describing the relationship between the frequency of switches between tasks and the speed of task performance in low-MO and high-MO individuals is presented.  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