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   3656篇
  免费   209篇
  国内免费   45篇
  2024年   8篇
  2023年   43篇
  2022年   36篇
  2021年   73篇
  2020年   83篇
  2019年   119篇
  2018年   150篇
  2017年   157篇
  2016年   158篇
  2015年   129篇
  2014年   118篇
  2013年   415篇
  2012年   227篇
  2011年   218篇
  2010年   142篇
  2009年   126篇
  2008年   183篇
  2007年   178篇
  2006年   123篇
  2005年   169篇
  2004年   137篇
  2003年   123篇
  2002年   96篇
  2001年   56篇
  2000年   61篇
  1999年   43篇
  1998年   33篇
  1997年   20篇
  1996年   29篇
  1995年   21篇
  1994年   12篇
  1993年   23篇
  1992年   23篇
  1991年   29篇
  1990年   37篇
  1989年   18篇
  1988年   27篇
  1987年   21篇
  1986年   25篇
  1985年   21篇
  1984年   26篇
  1983年   20篇
  1982年   9篇
  1979年   14篇
  1978年   15篇
  1977年   13篇
  1976年   8篇
  1974年   10篇
  1971年   8篇
  1968年   7篇
排序方式: 共有3910条查询结果,搜索用时 15 毫秒
971.
Early temperament attributes have been linked to emerging behaviour problems and significant long-term consequences; however, these relations are rarely examined cross-culturally. The present study addresses this gap, employing multilevel modelling to explain within- and between-culture variances with respect to temperament predicting a spectrum of behaviour problems across 14 nations from the Joint Effort Toddler Temperament Consortium (JETTC). A total of 865 children between 17 and 40 months, with approximately equal age distribution across this developmental period and about equivalent representation of genders, were recruited from 14 nations. Greater negative emotionality was associated with more internalizing problems, whereas higher surgency and effortful control predicted fewer internalizing difficulties. Controlling for age and gender, temperament explained significant within- and between-culture variances in internalizing and externalizing problems (at the broad-band and fine-grained levels), as well as sleep problems. For internalizing difficulties, temperament accounted for more between-culture variance. In contrast, for externalizing difficulties, temperament accounted more for how individuals within the same culture differed from their same-culture counterparts. The within-culture findings suggest universal patterns of temperament-problem relations, informing cultural adaptation of interventions; between-culture findings enhance understanding of the implications of the cultural niche for normative behaviour and adjustment.  相似文献   
972.
Clinical evidence based on real-world data (RWD) is accumulating exponentially providing larger sample sizes available, which demand novel methods to deal with the enhanced heterogeneity of the data. Here, we used RWD to assess the prediction of cognitive decline in a large heterogeneous sample of participants being enrolled with cognitive stimulation, a phenomenon that is of great interest to clinicians but that is riddled with difficulties and limitations. More precisely, from a multitude of neuropsychological Training Materials (TMs), we asked whether was possible to accurately predict an individual's cognitive decline one year after being tested. In particular, we performed longitudinal modelling of the scores obtained from 215 different tests, grouped into 29 cognitive domains, a total of 124,610 instances from 7902 participants (40% male, 46% female, 14% not indicated), each performing an average of 16 tests. Employing a machine learning approach based on ROC analysis and cross-validation techniques to overcome overfitting, we show that different TMs belonging to several cognitive domains can accurately predict cognitive decline, while other domains perform poorly, suggesting that the ability to predict decline one year later is not specific to any particular domain, but is rather widely distributed across domains. Moreover, when addressing the same problem between individuals with a common diagnosed label, we found that some domains had more accurate classification for conditions such as Parkinson's disease and Down syndrome, whereas they are less accurate for Alzheimer's disease or multiple sclerosis. Future research should combine similar approaches to ours with standard neuropsychological measurements to enhance interpretability and the possibility of generalizing across different cohorts.  相似文献   
973.
Poverty impedes children's executive function (EF). Therefore, it is necessary to mitigate the negative effect of poverty by developing efficient interventions to improve poor children's cognitive function. In three studies, we examined whether high-level construals can improve EF among poor children in China. In Study 1, we observed a positive relationship between family socioeconomic status and children's EF, which was moderated by construal level (n = 206; Mage = 9.71; 45.6% girls). In Study 2a, we experimentally induced high- versus low-level construals and found that poor children with high-level construals exhibited better EF than those with low-level construals (n = 65; Mage = 11.32; 47.7% girls). However, the same intervention did not affect the performance of affluent children in Study 2b (n = 63; Mage = 10.54; 54% girls). Moreover, we found that the interventional effects of high-level construals improved the ability of children living in poverty to make healthy decisions and delayed gratification in Study 3 (n = 74; Mage = 11.10; 45.9% girls). These findings may have implications for using high-level construals as an effective intervention to improve poor children's EF and cognitive capacity.  相似文献   
974.
In this study the effectiveness of differential reinforcement of other behavior (DRO) with tokens was assessed in the treatment of various topographies of disruptive behavior in the classroom with five children who were multiply handicapped. Prior to implementation of the treatment, reinforcer assessment was conducted to identify items to be used as back-up reinforcers. Data were analyzed using time-series analysis. Results show that DRO tokens were highly effective in decreasing disruptive behavior of all participants. ©1997 by John Wiley & Sons, Ltd.  相似文献   
975.
A 46 year old institutionalized retarded woman was referred for treatment because of frequent verbal abuse and physically aggressive behaviors. A multicomponent behavioral intervention consisting of differential reinforcement of other behaviors, differential reinforcement of incompatible behaviors, and restitution was implemented. A sequential withdrawal design was used in order to evaluate the effects of components of the original intervention, and to provide a measure of response maintenance. Results indicated a marked decrease in verbal abuse and elimination of physical aggression. Verbal abuse recurred when the restitution procedure was withdrawn. The relative efficacy of the different interventions is discussed with respect to the behavioral management of aggression. © 1998 John Wiley & Sons, Ltd.  相似文献   
976.
977.
The emergence of the COVID-19 pandemic in 2019 forced an abrupt shift in the modality through which psychotherapy was delivered and online therapy became the only viable option for clients. Research regarding experiences of online therapy during the early stages of the COVID-19 pandemic is minimal, however, and has largely focussed on therapists' experiences of delivering online treatment, as opposed to clients' experiences of receiving it. A scoping review was undertaken to establish what is known from the existing literature about clients' experiences of online therapy during the initial stages of the COVID-19 pandemic and identify gaps in the current knowledge. Searches were conducted across four academic databases: Scopus, EBSCO CINAHL Complete, EBSCO MEDLINE and OVID PsycInfo; the literature was excluded based on established PICOS criteria. Data were summarised through data charting and synthesised by way of inductive content analysis. A total of five articles were identified. All articles focussed on online therapy using video or audio conferencing, and four of the five studies examined clients with eating disorders. Inductive content analysis identified seven categories, as follows: preference for face-to-face therapy; appreciation of accessibility and convenience; online format hindered connection; positive experience of online therapy; individual client differences impacted experience; strong therapeutic alliance indicative of positive experience; and gratitude for continuation of treatment. Future research could explore clients' experiences of online therapy in a “post-pandemic” world and include a broader range of client populations and online therapy approaches in the COVID-19 context.  相似文献   
978.
In Islamic culture, there is an imperative demand that women should be virgins on their wedding night. Service providers in The Netherlands are increasingly confronted by Islamic young women who find themselves in serious difficulties because they are no longer virgins, and are about to enter a forced or arranged marriage. These young women report a diversity of problems such as loneliness, social isolation, depression, despair, suicidal feelings, identity problems and serious conflicts with parents. In this article we focus attention on the circumstances that can result in these types of difficulties, and also critically consider the kinds of help that young Islamic women are given. Attention is paid to the question of whether existing forms of service provision, especially surgical reconstruction of the hymen, take sexual and other inequalities into account.  相似文献   
979.
The aim of the study was to test the main and interactive effects of the key dimensions of the demand-control-support model in predicting levels of strain (specifically emotional exhaustion, depersonalization and job dissatisfaction) and feelings of productivity and competency (personal accomplishment) in a multi-occupational sample of human service workers (N = 813). Controlling for demographics, negative affectivity (NA), and quadratic terms, structural equation analyses showed some support for the additive iso-strain hypothesis: jobs combining high demands, low control and low support produced the lowest levels of satisfaction in workers. High demands and low supports only were associated with high depersonalization, and high emotional exhaustion. Support was also found for the additive active learning hypotheses: jobs combining high demands and high control produced the highest levels of personal accomplishment. The study supports job redesign interventions for improving worker well-being and productivity.  相似文献   
980.
Resolution-based methods for modal logics   总被引:2,自引:0,他引:2  
  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