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   2189篇
  免费   117篇
  2023年   10篇
  2022年   20篇
  2021年   27篇
  2020年   43篇
  2019年   58篇
  2018年   67篇
  2017年   85篇
  2016年   82篇
  2015年   63篇
  2014年   72篇
  2013年   299篇
  2012年   114篇
  2011年   115篇
  2010年   73篇
  2009年   66篇
  2008年   91篇
  2007年   81篇
  2006年   82篇
  2005年   89篇
  2004年   72篇
  2003年   63篇
  2002年   72篇
  2001年   30篇
  2000年   33篇
  1999年   34篇
  1998年   34篇
  1997年   28篇
  1996年   27篇
  1995年   15篇
  1994年   14篇
  1993年   20篇
  1992年   24篇
  1991年   17篇
  1990年   11篇
  1989年   18篇
  1988年   11篇
  1987年   15篇
  1986年   12篇
  1985年   22篇
  1984年   19篇
  1983年   17篇
  1982年   23篇
  1981年   23篇
  1980年   14篇
  1979年   14篇
  1978年   12篇
  1977年   10篇
  1976年   14篇
  1974年   8篇
  1973年   10篇
排序方式: 共有2306条查询结果,搜索用时 15 毫秒
191.
192.
193.
194.
195.
This study examined, in a sample of recently immigrated Hispanic adolescents in Miami and Los Angeles, the extent to which bicultural identity integration (BII; involving the ability to synthesise one's heritage and receiving cultural streams and to identify as a member of both cultures) is best understood as a developmental construct that changes over time or as an individual‐difference construct that is largely stable over time. We were also interested in the extent to which these trajectories predicted mental health and family functioning. Recent‐immigrant 9th graders (N = 302) were assessed 6 times from 9th to 12th grade. Latent class growth analyses using the first 5 timepoints identified 2 trajectory classes—one with lower BII scores over time and another with higher BII scores over time. Higher heritage and US identity at baseline predicted membership in the higher BII class. At the 6th study timepoint, lower BII adolescents reported significantly poorer self‐esteem, optimism, prosocial behaviour and family relationships compared with their higher BII counterparts. These findings are discussed in terms of further research on the over‐time trajectory of biculturalism, and on the need to develop interventions to promote BII as a way of facilitating well‐being and positive family functioning.  相似文献   
196.
197.
The term "pilot study" has been used over the years to describe the evaluation of the many elements involved in deciding whether a proposed condition should be added to a newborn screening (NBS) panel, and until recently, was unilaterally used to describe the evaluation of the assay to be used before the condition was officially adopted by a state for its newborn screening panel. Since Guthrie's introduction of screening for PKU, each time a new condition was added to the panel, the screening assay itself was validated through a population-based trial, in which the test was performed with de-identified samples to avoid association between the test result and the infant. This is considered by the laboratory as the "pilot phase" of adding a new condition. To advance the science of NBS, especially to accommodate new technologies that may provide new types of information (genetic versus physiological) for each new condition, pilot programs are essential. Involvement of the clinical community serves to improve these evaluations and provides the needed clinical validation of decisions made as a result of it. This paper describes the historical context of pilot programs in population-based NBS that utilize laboratory-based markers as indicators of concern; specifically, three applications that demonstrate different approaches to the use of pilots in adding conditions to a NBS panel are described.  相似文献   
198.
199.
200.
This paper reports three studies in which stronger orienting to perceived eye gaze direction was revealed when observers viewed faces showing fearful or angry, compared with happy or neutral, emotional expressions. Gaze-related spatial cueing effects to laterally presented fearful faces and centrally presented angry faces were also modulated by the anxiety level of participants, with high- but not low-state anxious individuals revealing enhanced shifts of attention. In contrast, both high- and low-state anxious individuals demonstrated enhanced orienting to averted gaze when viewing laterally presented angry faces. These results provide novel evidence for the rapid integration of facial expression and gaze direction information, and for the regulation of gaze-cued attention by both the emotion conveyed in the perceived face and the degree of anxiety experienced by the observer.  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