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   1212篇
  免费   26篇
  国内免费   5篇
教育   861篇
科学研究   91篇
各国文化   49篇
体育   51篇
文化理论   10篇
信息传播   181篇
  2023年   6篇
  2022年   8篇
  2021年   7篇
  2020年   20篇
  2019年   24篇
  2018年   31篇
  2017年   43篇
  2016年   35篇
  2015年   27篇
  2014年   33篇
  2013年   294篇
  2012年   28篇
  2011年   28篇
  2010年   26篇
  2009年   41篇
  2008年   21篇
  2007年   32篇
  2006年   25篇
  2005年   28篇
  2004年   32篇
  2003年   25篇
  2002年   18篇
  2001年   17篇
  2000年   26篇
  1999年   22篇
  1998年   11篇
  1997年   11篇
  1996年   17篇
  1995年   16篇
  1994年   9篇
  1993年   10篇
  1992年   9篇
  1991年   10篇
  1990年   17篇
  1989年   15篇
  1988年   10篇
  1987年   12篇
  1986年   9篇
  1985年   9篇
  1982年   9篇
  1981年   11篇
  1980年   8篇
  1978年   10篇
  1977年   6篇
  1975年   9篇
  1974年   8篇
  1973年   11篇
  1935年   9篇
  1934年   7篇
  1932年   5篇
排序方式: 共有1243条查询结果,搜索用时 15 毫秒
41.
42.
43.
44.
Age‐related differences in behavioral and electrophysiological indices of memory were examined in 3‐ to 6‐year‐old children (N = 76). Behaviorally, no differences were observed in children's ability to identify old items; however, 3‐year‐old children were less accurate in correctly rejecting new items, and 3‐ and 4‐year‐old children recalled fewer contextual details compared to 5‐ and 6‐year‐old children. Age‐related differences in electrophysiological measures (800–1,000 ms after stimulus onset) were observed both to items recalled with contextual details, which increased between 3 and 4 years, and items recalled without contextual details, which were greatest in 5‐year‐old children, even after adjusting for global age‐related differences. These findings, interpreted within a dual‐process framework, may suggest changes in both recollection and familiarity processes during early childhood.  相似文献   
45.
A growing number of organisations are emerging as partners to districts pursuing systemic improvement. Given the critical role a consulting organisation could play in supporting system reform efforts, how does a district leader looking to establish a consulting partnership determine what characteristics in a consulting organisation may be more likely to yield success? This paper utilises an exploratory sequential mixed methods approach for two purposes: (1) to assess whether the quality domains of consultants most prevalent in the literature are consistent with multiple sources of expert knowledge at the point of practice and (2) to determine which, if any, quality domains of consultants are perceived as more important than others for partnership success. Overall, the findings corroborated that the domains identified through the literature are influential to partnership success. While no specific domain or set of domains emerged as most dominant, interpersonal skills and content expertise are foundational indicators that crosscut the other domains.  相似文献   
46.
Infant vocalizations are early-emerging communicative markers shown to be atypical in autism spectrum disorder (ASD), but few longitudinal, prospective studies exist. In this study, 23,850 infant vocalizations from infants at low (LR)- and high (HR)-risk for ASD (HR-ASD = 23, female = 3; HR-Neg = 35, female = 13; LR = 32, female = 10; 80% White; collected from 2007 to 2017 near Philadelphia) were analyzed at 6, 12, and 24 months. At 12 months, HR-ASD infants produced fewer vocalizations than HR-Neg infants. From 6 to 24 months, HR-Neg infants demonstrated steeper vocalization growth compared to HR-ASD and LR infants. Finally, among HR infants, vocalizing at 12 months was associated with language, social phenotype, and diagnosis at age 2. Infant vocalizing is an objective behavioral marker that could facilitate earlier detection of ASD.  相似文献   
47.
Intellectual performance is highly heritable and robustly predicts lifelong health and success but the earliest manifestations of genetic effects on this asset are not well understood. This study examined whether early executive function (EF) or verbal performance mediate genetic influences on subsequent intellectual performance, in 561 U.S.-based adoptees (57% male) and their birth and adoptive parents (70% and 92% White, 13% and 4% African American, 7% and 2% Latinx, respectively), administered measures in 2003–2017. Genetic influences on children's academic performance at 7 years were mediated by verbal performance at 4.5 years (β = .22, 95% CI [0.08, 0.35], p = .002) and not via EF, indicating that verbal performance is an early manifestation of genetic propensity for intellectual performance.  相似文献   
48.
The present study leveraged data from a longitudinal adoption study of 361 families recruited between 2003 and 2010 in the United States. We investigated how psychopathology symptoms in birth parents (BP; Mage = 24.1 years; 50.5–62.9% completed high school) and adoptive parents (AP; Mage = 37.8 years; 80.9% completed college; 94% mother–father couples) influenced children's behavioral inhibition (BI) trajectories. We used latent growth models of observed BI at 18 and 27 months, and 4.5 and 7 years in a sample of adopted children (Female = 42%, White = 57%, Black = 11%, Multi-racial = 21%, Latinx = 9%). BI generally decreased over time, yet there was substantial variability in these trajectories. Neither BP nor AP psychopathology symptoms independently predicted systematic differences in BI trajectories. Instead, we found that AP internalizing symptoms moderated the effects of BP psychopathology on trajectories of BI, indicating a gene by environment interaction.  相似文献   
49.
50.
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