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   3153篇
  免费   170篇
  2023年   37篇
  2022年   60篇
  2021年   89篇
  2020年   114篇
  2019年   97篇
  2018年   179篇
  2017年   180篇
  2016年   154篇
  2015年   81篇
  2014年   113篇
  2013年   410篇
  2012年   234篇
  2011年   233篇
  2010年   151篇
  2009年   78篇
  2008年   200篇
  2007年   150篇
  2006年   134篇
  2005年   91篇
  2004年   74篇
  2003年   74篇
  2002年   49篇
  2001年   28篇
  2000年   38篇
  1999年   21篇
  1998年   18篇
  1997年   16篇
  1996年   8篇
  1995年   8篇
  1994年   9篇
  1993年   14篇
  1992年   7篇
  1991年   18篇
  1990年   9篇
  1989年   13篇
  1988年   10篇
  1987年   9篇
  1986年   8篇
  1985年   11篇
  1984年   7篇
  1983年   6篇
  1981年   8篇
  1980年   5篇
  1979年   6篇
  1972年   5篇
  1971年   6篇
  1968年   8篇
  1967年   4篇
  1966年   7篇
  1965年   9篇
排序方式: 共有3323条查询结果,搜索用时 31 毫秒
201.
Personal and social adjustment of high-ability children and adolescents is a very important issue in the specialized literature. The differences found between data for and against appropriate adjustment in gifted children and adolescents could be explained by conceptual or methodological biases. In this work, the relation between adjustment and high abilities are contrasted in a sample of teenagers from the Canary Islands, using a screening procedure based on their scores in intelligence tests. Results show that, although gifted adolescents differ significantly from their peers in the control group in socio-economic variables and academic performance, there are no differences in personal, social and educational adjustment. We conclude that adjustment problems and high ability are independent variables, and there is no evidence to support that gifted individuals have adjustment problems.  相似文献   
202.
Psychological interventions in cocaine dependent patients have demonstrated efficacy. Remarkable approaches are Contingency Management (CM) and Cognitive Behavioral Therapy (CBT). Lack of treatment adherence is the most important limitation. Motivational Interview (MI) has been shown to be an adherence enhancer. The objective of this study is to evaluate retention and abstinence in a combined CM and CBT group treatment in patients who have reached maintenance stage according to Prochaska and DiClemente's transtheoretical model (1982). Therefore, a longitudinal study was carried out with cocaine dependent patients with or without concomitant mental health disease. A 12-session open group was conducted weekly. Nineteen patients were included (78.9% men, mean age 36.6 years), 95% consumed intranasally and 47% had another psychiatric comorbidity. Treatment retention was 84%. During treatment and the first month of follow-up, all patients remained abstinent whereas at three months, 3 patients relapsed. These data confirm that using combined CM and CBT group therapy in cocaine dependents undergoing maintenance treatment enhances adherence and is effective to achieve abstinence.  相似文献   
203.
This paper describes the development of a self-report scale for adolescents to assess positive youth development values. It presents a substantial number of psychometric results performed on a sample of 2,400 adolescents (1,068 boys and 1,332 girls) from 12 to 17 years ( M = 14.73, SD = 1.25), who were studying secondary education in Western Andalusia. The results provide evidence of the psychometric quality of items, cross-validity of a structure of eight first-order factors and three second-order factors, obtained through exploratory and confirmatory factor analysis, and adequate reliability. This study concludes that the scale presents adequate evidence of validity and reliability that allows assessment, especially in school contexts, of a broad set of values of particular relevance to positive youth development.  相似文献   
204.
Better understanding of child temperament is essential, as it may predict subsequent development of psychopathology. Questionnaires which have been adapted to Spanish population include a rather restricted age range. The Emotionality Sociability and Activity (EAS) Temperament Survey has been widely used in child temperament genetic research. A Spanish version of the scale was administered to a sample of 229 mothers and to their children at 18 and 42 months of age. Its psychometric features were examined. Results showed accuracy indices akin to that obtained in prior studies. Findings suggest a three-factor structure for the assessment of temperament.  相似文献   
205.
Exposure to severe air pollution produces neuroinflammation and structural brain alterations in children. We tested whether patterns of brain growth, cognitive deficits and white matter hyperintensities (WMH) are associated with exposures to severe air pollution. Baseline and 1 year follow-up measurements of global and regional brain MRI volumes, cognitive abilities (Wechsler Intelligence Scale for Children-Revised, WISC-R), and serum inflammatory mediators were collected in 20 Mexico City (MC) children (10 with white matter hyperintensities, WMH+, and 10 without, WMH) and 10 matched controls (CTL) from a low polluted city. There were significant differences in white matter volumes between CTL and MC children - both WMH+ and WMH - in right parietal and bilateral temporal areas. Both WMH and WMH+ MC children showed progressive deficits, compared to CTL children, on the WISC-R Vocabulary and Digit Span subtests. The cognitive deficits in highly exposed children match the localization of the volumetric differences detected over the 1 year follow-up, since the deficits observed are consistent with impairment of parietal and temporal lobe functions. Regardless of the presence of prefrontal WMH, Mexico City children performed more poorly across a variety of cognitive tests, compared to CTL children, thus WMH+ is likely only partially identifying underlying white matter pathology. Together these findings reveal that exposure to air pollution may perturb the trajectory of cerebral development and result in cognitive deficits during childhood.  相似文献   
206.
The assessment of varied psychiatric disorders, including obsessive–compulsive disorder (OCD), is shifting towards the use of evidence-based assessments (EBAs). This shift has fostered the development, validation and adaptation of several measures to rate obsessive–compulsive symptoms and other related problematic areas such as functional impairment or family attitudes among others. The aim of this paper is to present a systematic review of psychometric studies on pediatric OCD-specific measures to classify these according to assessment evidence-based criteria. Selection criteria that determined which studies were included in the review were: (1) analyzing an OCD measure and (2) including participants’ age being 18 years or younger. The literature search procedure was conducted in Medline, PsycINFO, PsycARTICLES, ERIC, Cochrane Library, and Scholar Google databases and enabled us to locate 42 studies which analyzed psychometric properties of 14 OCD measures studied in children and adolescents. Instruments were grouped into the following assessment areas: symptom presence and severity, functional impairment, family functioning and cognitive dimensions of OCD. Psychometric data regarding internal structure, internal consistency, reliability, validity and diagnostic precision were also reported. Further, measures were classified as well-established, approaching well-established and promising assessments in terms of reliability and validity. We concluded that the assessment of OCD in pediatric populations is a growing field that in a short-medium term could provide a wide variety of EBAs for the evaluation obsessive–compulsive symptoms and other OCD-related dimensions. The paper concludes by highlighting directions for future research.  相似文献   
207.
We studied whether the origins of math anxiety can be related to a biologically supported framework of stress induction: (un)controllability perception, here indicated by self‐reported independent efforts in mathematics. Math anxiety was tested in 182 children (8‐ to 11‐year‐olds). Latent factor modeling was used to test hypotheses on plausible causal processes and mediations within competing models in quasi‐experimental contrasts. Uncontrollability perception in mathematics, or (in)dependence of efforts, best fit the data as an antecedent of math anxiety. In addition, the relationship of math anxiety with gender was fully mediated by adaptive perception of control (i.e. controllability). That is, young boys differ from girls in terms of their experience of control in mathematics learning. These differences influence math anxiety. Our findings are consistent with recent suggestions in clinical literature according to which uncontrollability makes women more susceptible to fear and anxiety disorders. A video abstract of this article can be viewed at http://www.youtube.com/watch?v=I4b_47Y-e_U  相似文献   
208.
Three arguments of Habermas against “liberal eugenics”—the arguments from consent, responsibility, and instrumentalization—are critically evaluated and explicated in the light of his discourse ethics and social theory. It is argued that these arguments move partly at a too deep level and are in part too individualistic and psychological to sufficiently counter the liberal position that he sets out to criticize. This is also due to limitations that prevent discourse ethics from connecting effectively to the moral and political domains, e.g., through a discussion of justice. In spite of these weaknesses, Habermas’s thesis is of major relevance and brings up neglected issues in the discussion about eugenic reproductive practices. This relevance has not been duly recognized in bioethics, largely because of the depth of his speculations of philosophical anthropology. It is argued that Habermas’s notion of the colonization of the lifeworld could provide the analytical tool needed to build that bridge to the moral and political domain.  相似文献   
209.
Although gaze-following abilities have been demonstrated in a wide range of species, so far no clear evidence has been available for dogs. In the current study, we examined whether dogs follow human gaze behind an opaque barrier in two different contexts, in a foraging situation and in a non-foraging situation (food involved vs. food not involved in the situation). We assumed that dogs will spontaneously follow the human gaze and that the foraging context will have a positive effect on dogs’ gaze-following behaviour by causing an expectation in the dogs that food might be hidden somewhere in the room and might be communicated by the experimenter. This expectation presumably positively affects their motivational and attentional state. Here, we report that dogs show evidence of spontaneous gaze-following behind barriers in both situations. According to our findings, the dogs gazed earlier at the barrier in the indicated direction in both contexts. However, as we expected, the context also has some effect on dogs’ gaze-following behaviour, as more dogs gazed behind the barrier in the indicated direction in the foraging situation. The present results also support the idea that gaze-following is a characteristic skill in mammals which may more easily emerge in certain functional contexts.  相似文献   
210.
Synthese - Multiple realizability says that the same kind of mental states may be manifested by systems with very different physical constitutions. Putnam (1967) supposed it to be...  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