全文获取类型
收费全文 | 5226篇 |
免费 | 717篇 |
国内免费 | 376篇 |
专业分类
6319篇 |
出版年
2024年 | 25篇 |
2023年 | 167篇 |
2022年 | 101篇 |
2021年 | 163篇 |
2020年 | 264篇 |
2019年 | 319篇 |
2018年 | 226篇 |
2017年 | 284篇 |
2016年 | 238篇 |
2015年 | 221篇 |
2014年 | 231篇 |
2013年 | 774篇 |
2012年 | 155篇 |
2011年 | 225篇 |
2010年 | 172篇 |
2009年 | 215篇 |
2008年 | 243篇 |
2007年 | 218篇 |
2006年 | 261篇 |
2005年 | 223篇 |
2004年 | 192篇 |
2003年 | 190篇 |
2002年 | 178篇 |
2001年 | 112篇 |
2000年 | 122篇 |
1999年 | 80篇 |
1998年 | 72篇 |
1997年 | 49篇 |
1996年 | 68篇 |
1995年 | 59篇 |
1994年 | 55篇 |
1993年 | 37篇 |
1992年 | 48篇 |
1991年 | 10篇 |
1990年 | 15篇 |
1989年 | 19篇 |
1988年 | 15篇 |
1987年 | 14篇 |
1986年 | 14篇 |
1985年 | 35篇 |
1984年 | 24篇 |
1983年 | 18篇 |
1982年 | 19篇 |
1981年 | 19篇 |
1980年 | 20篇 |
1979年 | 22篇 |
1978年 | 18篇 |
1977年 | 36篇 |
1976年 | 19篇 |
1975年 | 14篇 |
排序方式: 共有6319条查询结果,搜索用时 15 毫秒
941.
BackgroundWhile there is a large body of work supporting the importance of early feeding practices on cognitive, immunity, behavioural and mental outcomes, few longitudinal studies have focused on motor development. The relationship between duration of breast feeding and motor development outcomes at 10, 14, and 17 years were examined.MethodsData were obtained from the Western Australian Pregnancy (Raine) Study. There were 2868 live births recorded and children were examined for motor proficiency at 10 (M = 10.54, SD = 2.27), 14 (M = 14.02, SD = 2.33) and 17 (M = 16.99, SD = 2.97) years using the McCarron Assessment of Neuromuscular Development (MAND). Using linear mixed models, adjusted for covariates known to affect motor development, the influence of predominant breast feeding for <6 months and ⩾6 months on motor development outcomes was examined.ResultsBreast feeding for ⩾6 months was positively associated with improved motor development outcomes at 10, 14 and 17 years of age (p = 0.019, β 1.38) when adjusted for child’s sex, maternal age, alcohol intake, family income, hypertensive status, gestational stress and mode of delivery.ConclusionEarly life feeding practices have an influence on motor development outcomes into late childhood and adolescence independent of sociodemographic factors. 相似文献
942.
943.
Bradley T. Erford Gerta Bardhoshi Margaret Ross Chelsea Gunther Kelly Duncan 《Journal of counseling and development : JCD》2017,95(1):35-44
Twenty‐one clinical trials were synthesized using a random‐effects model, which substantiated that counseling generally produces a medium effect in treating conduct disorder in youth at termination (d + = 0.30 to 0.57; k = 28). However, the lasting effects at follow‐up were unclear because few follow‐up studies (k = 13) have been conducted (d + = ?0.53 to 0.58), and only 2 randomized controlled follow‐up studies were located. No effects of moderating variables were evident. Implications for counseling practice and outcome research are addressed. 相似文献
944.
Patricia J. Bauer Emily N. Stark Jennifer K. Ackil Marina Larkina Natalie Merrill Robyn Fivush 《Memory (Hove, England)》2017,25(3):412-424
The recollective qualities of autobiographical memory are thought to develop over the course of the first two decades of life. We used a 9-year follow-up test of recall of a devastating tornado and of non-tornado-related events from before and after the storm, to compare the recollective qualities of adolescents’ (n?=?20, ages 11 years, 11 months to 20 years, 8 months) and adults’ (n?=?14) autobiographical memories. At the time of the tornado, half of the adolescents had been younger than age 6. Nine years after the event, all participants provided evidence that they recall the event of the tornado. Adults also had high levels of recall of the non-tornado-related events. Adolescents recalled proportionally fewer non-tornado-related events; adolescents younger than 6 at the time of the events recalled the fewest non-tornado-related events. Relative to adolescents, adults produced longer narratives. With narrative length controlled, there were few differences in the recollective qualities of adolescents’ and adults’ narrative reports, especially in the case of the tornado; the recollective qualities were stronger among adolescents older at the time of the events. Overall, participants in both age groups provided evidence of the qualities of recollection that are characteristic of autobiographical memory. 相似文献
945.
Uriya Shavit 《Islam & Christian-Muslim Relations》2017,28(3):333-354
Despite the importance salafīs place on children’s education, this aspect of their discourse has hardly been studied. The present article examines how salafī jurists based in the Arab world, salafī imams based in the West and salafī authors of English-language children’s books conceptualize the norms for raising children, and what they believe should be done specifically to assure the virtuous Islamic upbringing of children in Western societies. Exploring issues ranging from what constitutes proper schooling to whether Muslim children may befriend non-Muslim children and whether it is permissible to celebrate birthdays, play foosball or play with dolls, the article analyses the educational challenges salafī communities in the West face as enclaves that resist both majority secular societies and the majority among Muslim minorities, and presents the nuances, and in some cases contestations, among salafī leaders as to how these challenges should be addressed and prioritized. 相似文献
946.
947.
948.
采用潜变量增长模型对426名流动儿童进行四次追踪测查,旨在考察流动儿童孤独感的变化趋势,探索不同流动性和教育安置方式的流动儿童孤独感变化的差异性以及心理弹性对孤独感变化的促进性作用。结果发现:(1)流动儿童的孤独感呈线性下降趋势;(2)打工子弟学校流动儿童的孤独感起始水平显著高于公立学校流动儿童;流动性高的儿童的孤独感起始水平高于流动性低的儿童,但流动性和教育安置方式对孤独感的发展趋势没有显著预测作用;(3)对于流动儿童来说,较高的心理弹性水平不仅能显著预测更低的孤独感起始水平,同时也能显著预测更快的孤独感的下降速率。本研究启示,增加进入公立学校学习的机会、降低流动频率和提升心理弹性对降低流动儿童的孤独感水平具有重要的意义。 相似文献
949.
以397名流动儿童为被试,采用问卷法考察流动儿童消极学业情绪对学习自我效能感的影响以及情绪调节策略在其中的调节作用。结果表明:(1)流动儿童学业情绪对控制感的负向预测作用高于对基本能力感的预测作用,其中有恼火、羞愧、无助对基本能力感预测作用显著;认知重评对基本能力感预测作用显著,并且认知重评情绪调节策略对恼火、沮丧与基本能力感的关系有调节作用,而表达抑制对无助与基本能力感的关系有调节作用。(2)流动儿童学业情绪中除恼火外,焦虑、羞愧、厌倦、无助、沮丧和心烦对控制感的预测作用均显著。认知重评和表达抑制均对控制感的预测作用显著,并且认知重评与羞愧、厌倦、沮丧的调节作用显著,表达抑制与沮丧的调节作用显著。 相似文献
950.
研究选取634名幼儿为被试,采用问卷法,应用多层线性模型,在班级和个体两个层面上,探讨教师期望对幼儿人格的影响,并考察师幼关系的中介效应。研究表明:(1)个体层面和班级层面教师期望对师幼关系均有显著预测作用。(2)个体层面上教师期望对人格智能特征、认真自控、外倾性和亲社会性有显著的预测作用;班级层面,班级平均教师期望对认真自控有显著预测作用。(3)个体层面上,师幼关系是教师期望影响人格的认真自控、外倾性、亲社会性和情绪稳定性的中介变量;班级层面上师幼关系无显著的中介作用。 相似文献