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   2140篇
  免费   121篇
  2261篇
  2024年   2篇
  2023年   14篇
  2022年   20篇
  2021年   19篇
  2020年   43篇
  2019年   68篇
  2018年   75篇
  2017年   76篇
  2016年   73篇
  2015年   75篇
  2014年   79篇
  2013年   246篇
  2012年   150篇
  2011年   151篇
  2010年   86篇
  2009年   81篇
  2008年   103篇
  2007年   122篇
  2006年   84篇
  2005年   88篇
  2004年   90篇
  2003年   89篇
  2002年   86篇
  2001年   29篇
  2000年   27篇
  1999年   33篇
  1998年   31篇
  1997年   26篇
  1996年   25篇
  1995年   23篇
  1994年   22篇
  1993年   24篇
  1992年   8篇
  1991年   12篇
  1990年   7篇
  1989年   12篇
  1988年   7篇
  1987年   5篇
  1986年   7篇
  1985年   8篇
  1984年   5篇
  1983年   4篇
  1982年   5篇
  1981年   5篇
  1979年   2篇
  1978年   3篇
  1977年   3篇
  1976年   2篇
  1975年   2篇
  1974年   2篇
排序方式: 共有2261条查询结果,搜索用时 15 毫秒
931.
Sleep is known to support the neocortical consolidation of declarative memory, including the acquisition of new language. Autism spectrum disorder (ASD) is often characterized by both sleep and language learning difficulties, but few studies have explored a potential connection between the two. Here, 54 children with and without ASD (matched on age, nonverbal ability and vocabulary) were taught nine rare animal names (e.g., pipa). Memory was assessed via definitions, naming and speeded semantic decision tasks immediately after learning (pre‐sleep), the next day (post‐sleep, with a night of polysomnography between pre‐ and post‐sleep tests) and roughly 1 month later (follow‐up). Both groups showed comparable performance at pre‐test and similar levels of overnight change on all tasks; but at follow‐up children with ASD showed significantly greater forgetting of the unique features of the new animals (e.g., pipa is a flat frog). Children with ASD had significantly lower central non‐rapid eye movement (NREM) sigma power. Associations between spindle properties and overnight changes in speeded semantic decisions differed by group. For the TD group, spindle duration predicted overnight changes in responses to novel animals but not familiar animals, reinforcing a role for sleep in the stabilization of new semantic knowledge. For the ASD group, sigma power and spindle duration were associated with improvements in responses to novel and particularly familiar animals, perhaps reflecting more general sleep‐associated improvements in task performance. Plausibly, microstructural sleep atypicalities in children with ASD and differences in how information is prioritized for consolidation may lead to cumulative consolidation difficulties, compromising the quality of newly formed semantic representations in long‐term memory.  相似文献   
932.
Gender differences in children’s toy interests and play behaviors are large and may lead to gender differentiation of physical, cognitive, and social development among children. In this Special Issue, we gather together cutting-edge research on the factors that affect gender differences in children’s toy interests, how subtle gender-related messages affect children’s performance and behaviors, and how adults create these gender-related messages and affect children’s interests. We illustrate themes found in the current literature, but also comment on issues that need to be addressed by future research. We also identify points of intervention in which stereotypes about toys and gender differentiated play behaviors and toy interests can be reduced in an effort to promote greater diversity of children’s play.  相似文献   
933.
Speakers of English and German typically adopt the reflection variant of the relative frame of reference (FoR) in order to describe how nonoriented objects that are located in front of them are related to one another. Little is known, however, about how they proceed in dorsal settings, with objects located in their back. In this article, we explore the turn hypothesis, which assumes a (mental) 180° turn of the observer to face the objects, converting the dorsal into a frontal situation, so that the preferred FoR variant for frontal settings can be applied. To elicit spatial references, we used photographs that showed an observer and two objects either in the observer's visual field (frontal condition) or in the observer's back (dorsal condition). The observer was looking either in the same direction as the referencing individual (aligned perspectives) or in the opposite direction (vis-à-vis perspective). Data from two experiments show that while participants do adopt the observer's perspective, their references in dorsal settings are incompatible with the turn hypothesis. Analyses of response latencies indicate additional cognitive costs for establishing a FoR for the very first item in the dorsal condition as compared to the frontal condition, but fast adaption for subsequent items, and high intraindividual consistency in FoR choice in both conditions. Maintaining the assumption that references in dorsal settings should be compatible with the variant of the relative FoR adopted in frontal settings, participants’ references can be explained by assuming a backward projection that gets by without a (mental) turn of the observer.  相似文献   
934.
Research increasingly demonstrates the detrimental effects of psychologically controlling parenting on children's adjustment. An important and practically relevant question is whether some children are more vulnerable for the effects of psychologically controlling parenting. In the current diary study, we investigated whether daily psychologically controlling parenting relates to children's daily externalizing and internalizing problems and whether these associations depend on child personality. A total of 206 children (M age = 9.93 years; 46.6% female) along with their mothers and fathers (M age = 40.30 and 42.40 years) participated in this multi‐informant diary study. All three family members filled out a diary each day for seven days. Multilevel analyses indicated that daily maternal and paternal psychological control were positively related to daily externalizing and internalizing problems, a pattern that was fairly consistent across informants. Out of the 35 interactions tested, only three turned out to be significant. Overall, the limited number of interactions suggests that psychologically controlling parenting is generally detrimental to children's daily functioning. Still, children differ somewhat in their susceptibility to the effect of psychologically controlling parenting. © 2018 European Association of Personality Psychology  相似文献   
935.
This study focuses on the help-seeking orientations of low-status Latino adolescents. Help-seeking orientation is defined as a person's proclivity to resolve personal and academic problems through the seeking of social support (i.e., coping by seeking help). This article presents a selected review of the literature on key social antecedents of people's help-seeking orientation. It also presents an emerging sociological framework for recasting this social psychological phenomenon as an important mediating link between the systematic forces of class, race, and gender and the life chances of low-status youth. The authors report on a cross-sectional study of three measures of adolescent help-seeking orientation, based on a questionnaire survey of one urban high school in the southwestern United States. Measures of social class, gender, age, English-language proficiency, and academic performance were examined for their independent predictive value. The authors also tested for differential effects across three student groups: Spanish-dominant Latinos, English-proficient Latinos, and non-Latinos. Gender and academic performance emerged as the most salient predictors, suggesting that low-achieving males are particularly prone to withdraw from vital sources of support. Latino immigrants with little English proficiency also revealed signs of a negative or conflictive orientation toward help seeking, reporting low degrees of interpersonal openness and a low desire for academic support.  相似文献   
936.
The overall aim of the present study was to investigate ADHD symptoms in relation to attachment representations. We used both attachment- and non-attachment-related story stems, which allowed us to investigate whether problems with narrative production can explain the relation between ADHD symptoms and attachment representations. We also investigated the role of cognitive deficits and conduct problems in these relations. The sample consisted of 89 children (27 % girls) between 6 and 10 years old, with an oversampling of children with high levels of ADHD symptoms. ADHD symptoms and conduct problems were rated by parents and teachers. Cognitive functioning was investigated using laboratory tests of inhibition, working memory and sustained attention. Attachment representations were coded as secure, organized insecure and disorganized categories. Narrative responses to non-attachment-related story stems were coded for incoherence and negative content. Results showed that children in the disorganized attachment category had significantly higher levels of ADHD symptoms compared to those in the secure category. Both ADHD symptoms and disorganized attachment were related to incoherence and negative content. Attachment representations were not associated with ADHD symptoms when controlling for negative content in response to non-attachment-related story stems. These results suggest that the associations between attachment security and ADHD are yet to be fully understood. Importantly, a propensity to envisage negative events seems to characterize children with high levels of ADHD symptoms.  相似文献   
937.
The Simon effect is usually explained by the assumption that the irrelevant stimulus location automatically activates the corresponding response. In the case of incongruent stimulus–response assignments automatically activated responses therefore have to be suppressed to ensure correct responses. This account, however, has been called into question for other than horizontally arranged visual Simon tasks. We investigated whether there is a qualitative or quantitative difference in suppression of irrelevant activation between horizontally and vertically arranged Simon tasks, using delta-function analyses. Sequential analyses revealed suppression after incongruent trials in both tasks, supporting the idea of a quantitative rather than a qualitative difference between the tasks. We conclude that automatic response activation is weaker in vertical tasks resulting in lower inhibitory demands as compared to horizontal tasks.  相似文献   
938.
Social Psychology of Education - This study investigated the impact of diversity ideologies (i.e., colorblindness vs. multiculturalism) on students’ sense of belonging (SOB) to the university...  相似文献   
939.
Previous studies have demonstrated the sensitivity of chimpanzees to facial configurations. Three studies further these findings by showing this sensitivity to be specific to second-order relational properties. In humans, this type of configural processing requires prolonged experience and enables subordinate-level discriminations of many individuals. Chimpanzees showed evidence of a composite-like effect for conspecific but not human faces despite extensive experience with humans. Chimpanzee face recognition was impaired only when manipulations targeted second-order properties. Finally, face processing was impaired when individual features were blurred through pixelation. Results confirm that chimpanzee face discrimination, like humans, depends on the integrity of second-order relational properties.  相似文献   
940.
Marsh EJ  Fazio LK 《Memory & cognition》2006,34(5):1140-1149
Readers rely on fiction as a source of information, even when fiction contradicts relatively well-known facts about the world (Marsh, Meade, and Roediger, 2003). Of interest was whether readers could monitor fiction for errors, in order to reduce suggestibility. In Experiment 1, warnings about errors in fiction did not reduce students' reliance on stories. In Experiment 2, all subjects were warned before reading stories written at 6th- or 12th-grade reading levels. Even though 6th-grade stories freed resources for monitoring, suggestibility was not reduced. In Experiment 3, suggestibility was reduced but not eliminated when subjects pressed a key each time they detected an error during story reading. Readers do not appear to spontaneously monitor fiction for its veracity, but can do so if reminded on a trial-by-trial basis.  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