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   2475篇
  免费   115篇
  2023年   13篇
  2021年   21篇
  2020年   47篇
  2019年   55篇
  2018年   44篇
  2017年   60篇
  2016年   88篇
  2015年   51篇
  2014年   53篇
  2013年   314篇
  2012年   101篇
  2011年   109篇
  2010年   63篇
  2009年   68篇
  2008年   73篇
  2007年   104篇
  2006年   84篇
  2005年   92篇
  2004年   84篇
  2003年   79篇
  2002年   77篇
  2001年   45篇
  2000年   40篇
  1999年   39篇
  1998年   32篇
  1997年   38篇
  1996年   33篇
  1995年   45篇
  1994年   38篇
  1993年   33篇
  1992年   28篇
  1991年   26篇
  1990年   30篇
  1989年   25篇
  1988年   18篇
  1987年   21篇
  1986年   23篇
  1985年   28篇
  1984年   21篇
  1983年   28篇
  1982年   40篇
  1981年   23篇
  1980年   26篇
  1979年   27篇
  1978年   29篇
  1977年   24篇
  1976年   17篇
  1975年   23篇
  1974年   19篇
  1973年   19篇
排序方式: 共有2590条查询结果,搜索用时 15 毫秒
931.
932.
An alternating treatments design was used to examine the effects of story mapping, a modified self-questioning strategy, and no intervention on literal and inferential reading comprehension of elementary students with learning disabilities. Immediate post-tests indicated that students attained significantly greater comprehension in the self-questioning and story mapping conditions over no intervention. Although students attained similarly high levels of overall comprehension when they used story mapping and self-questioning, students scored slightly higher on inferential comprehension questions in the self-questioning condition. Additionally, 4 out of the 5 students indicated a preference for the self-questioning strategy.  相似文献   
933.
Despite ongoing concern about the well-being of HIV-seronegative children living in urban poverty with a seropositive mother, very little is known about this expanding population of children. In this cross-sectional study, the psychosocial adjustment of 60 ethnic minority children 11 to 16 years of age who were living with an HIV-seropositive mother was compared with that of 108 children attending public school in the same community. Results of three multivariate analyses of covariance indicated that, after allowance for differences associated with age, gender, ethnicity, and family structure, the HIV-affected group confirmed (a) greater disturbance in the parent–child relationship, (b) less social support, and (c) greater disturbance in psychological functioning. Secondary analysis of the multivariate findings indicated that the differences were characterized primarily by (a) perception of more indifference and hostility in the mother–child relationship, (b) perception of less social support available from parents, friends, and teachers, and (c) less self-esteem. The findings suggest that HIV infection and concurrent problems may compromise parent–child relationships and perception of social support in ways that leave older, seronegative children living with an infected mother at risk for psychological disturbance.  相似文献   
934.
Colley  Ann  Ball  Jane  Kirby  Nicola  Harvey  Rebecca  Vingelen  Ingrid 《Sex roles》2002,47(11-12):577-582
Previous research has found gender differences in everyday memory tasks such as remembering shopping lists or directions, and these findings can be attributed to increased motivation or memory skill resulting from the association of different tasks with masculine or feminine gender roles. To investigate the motivational explanation, the recall of an ambiguous shopping list, labeled as grocery or hardware, was examined under instructions that stated that either women or men are good at the task, or instructions that were neutral. The findings were not consistent with the skill explanation. There was a significant interaction between list label, participant gender, and instructions, which can be explained in terms of the increased or decreased motivation that might arise from particular combinations of label and instruction.  相似文献   
935.
There is active debate regarding the nature of executive dysfunction in autism. Additionally, investigations have yet to show a relationship between deficits in executive function and the everyday behavioral difficulties that may originate from them. The present study examined the relationship between executive abilities and adaptive behavior in 35 children with Autism Spectrum Disorders, using two parent reports of everyday functioning, the Vineland Adaptive Behavior Scales (VABS) and the Behavior Rating Inventory of Executive Function (BRIEF). Results found several relationships: The Initiate and Working Memory domains were negatively correlated with most domains of adaptive behavior. Also, the Communication and Socialization domains of the VABS were negatively correlated with several areas of executive functioning, suggesting that impairments in executive abilities are strongly associated with the deficits in communication, play and social relationships found in children with autism.  相似文献   
936.
Adolescent Neurodevelopment and Psychopathology   总被引:2,自引:0,他引:2  
Adolescence is a high-risk period for the onset of psychopathology. The occurrence of depression increases markedly in the years following the onset of puberty, and most individuals who are eventually diagnosed with a psychotic disorder show a marked rise in adjustment problems during adolescence. It is well established that puberty involves increases in the secretion of gonadal hormones. More recently, research has shown that stress hormones show a similar normative rise following puberty. Accumulating findings indicate that the postpubescent period is also characterized by significant neurodevelopment; there are changes in brain structure and function that are partially a consequence of hormonal factors. Researchers are now challenged to elucidate the neural mechanisms relating postpubertal neurodevelopment with the elevations in risk for psychopathology that characterize adolescence. One plausible mechanism is the effect of hormones on gene expression. The normal neuromaturational processes observed in adolescence partially reflect the effect of gonadal hormones on the expression of genes that control brain development. Hormone surges following puberty may also trigger the expression of genes that code for brain abnormalities that give rise to mental disorders.  相似文献   
937.
938.
While the nature of memory complaints during older adulthood has been studied extensively, the meaning of subjective memory concerns in younger adults has not been fully addressed. Using a sample of 95 younger adults, this study examined the role of personality, health, and depression in predicting objective and subjective memory. For objective memory, openness and self-rated health were unique predictors. For subjective memory ability, only self-rated health was predictive. Finally, similar to studies with older adults, neuroticism and conscientiousness were predictive of both perceived frequency of forgetting and global memory. Using subjective memory concerns as an indicator of actual memory functioning may be inappropriate given the extent to which personality traits and health predict memory concerns.  相似文献   
939.
There is growing concern that roadside advertising presents a real risk to driving safety, with conservative estimates putting external distractors responsible for up to 10% of all road traffic accidents. In this report, we present a simulator study quantifying the effects of billboards on driver attention, mental workload and performance in Urban, Motorway and Rural environments. The results demonstrate that roadside advertising has clear adverse effects on lateral control and driver attention, in terms of mental workload. Whilst the methodological limitations of the study are acknowledged, the overriding conclusion is that prudence should be exercised when authorising or placing roadside advertising. The findings are discussed with respect to governmental policy and guidelines.  相似文献   
940.
Background: Self‐harm (self poisoning and self‐injury) is broadly characterised as any act intended to harm one's own body, without a conscious intent to die. Research indicates that when practitioners encounter self‐harm they often remain anxious, fearful, frustrated, and challenged about such individuals, principally because they are constrained to understand and respond to self‐harm almost exclusively within a problematised discourse (Walker, 2006). That is, a problem that must be diagnosed and contained. Women who self‐harm with a diagnosis of BPD are often portrayed as being risky, chaotic and their identity can be unstable. The aim of this study was to examine and explore the subjective experiences of women who self‐harm with a diagnosis of BPD. Participants: Four women who had a history of self‐harming behaviour with the diagnosis of BPD volunteered for the study. Method: Face‐to‐face, in‐depth narrative interviews were undertaken and were analysed within a framework which drew upon aspects of the ‘performance’ (Langellier, 1989; 2001) and ‘narrative thematic’ approaches (Reissman, 1993). Findings: Two of the participant's accounts illustrate how their self‐harming appeared to have affected their selfhood and sense of agency. They discuss how the external signs of self‐harm may take over their identity and how others communicate and interact with them. Despite the problematic nature of self‐harm implications for practice are highlighted which practitioners may draw upon in their work around self‐harm.  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