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   556篇
  免费   31篇
  2023年   4篇
  2021年   4篇
  2020年   15篇
  2019年   11篇
  2018年   14篇
  2017年   21篇
  2016年   21篇
  2015年   11篇
  2014年   15篇
  2013年   47篇
  2012年   22篇
  2011年   30篇
  2010年   23篇
  2009年   12篇
  2008年   27篇
  2007年   11篇
  2006年   17篇
  2005年   20篇
  2004年   14篇
  2003年   21篇
  2002年   17篇
  2001年   10篇
  2000年   11篇
  1999年   6篇
  1998年   10篇
  1997年   12篇
  1996年   6篇
  1995年   5篇
  1993年   3篇
  1992年   3篇
  1991年   9篇
  1990年   4篇
  1989年   5篇
  1987年   4篇
  1986年   5篇
  1985年   8篇
  1983年   8篇
  1981年   5篇
  1980年   3篇
  1979年   7篇
  1978年   7篇
  1977年   9篇
  1976年   7篇
  1975年   12篇
  1974年   6篇
  1973年   6篇
  1972年   8篇
  1971年   7篇
  1969年   3篇
  1966年   4篇
排序方式: 共有587条查询结果,搜索用时 15 毫秒
451.
452.
Syntactic comprehension is a fundamental aspect of human language, and has distinct properties from other aspects of language (e.g. semantics). In this article, we aim to identify if there is a specific locus of syntax in the brain by reviewing imaging studies on syntactic processing. We conclude that results from neuroimaging support evidence from neuropsychology that syntactic processing does not recruit one specific area. Instead a network of areas including Broca's area and anterior, middle and superior areas of the temporal lobes is involved. However, none of these areas appears to be syntax specific.  相似文献   
453.
454.
According to cognitive load theory, instructions can impose three types of cognitive load on the learner: intrinsic load, extraneous load, and germane load. Proper measurement of the different types of cognitive load can help us understand why the effectiveness and efficiency of learning environments may differ as a function of instructional formats and learner characteristics. In this article, we present a ten-item instrument for the measurement of the three types of cognitive load. Principal component analysis on data from a lecture in statistics for PhD students (n = 56) in psychology and health sciences revealed a three-component solution, consistent with the types of load that the different items were intended to measure. This solution was confirmed by a confirmatory factor analysis of data from three lectures in statistics for different cohorts of bachelor students in the social and health sciences (ns = 171, 136, and 148), and received further support from a randomized experiment with university freshmen in the health sciences (n = 58).  相似文献   
455.
The manifestation of alcohol dependence at different developmental stages may be associated with different genetic and environmental factors. Taking a developmental approach, we characterized interaction between the dopamine receptor 4 variable number tandem repeat (DRD4 VNTR) polymorphism and developmentally specific environmental factors (childhood adversity, college/Greek organization involvement, and delayed adult role transition) on alcohol dependence during emerging and young adulthood. Prospective data were obtained from a cohort of 234 White individuals (56% women, 44% men) who were followed up at ages 18 through 34. A longitudinal hierarchical factor model was estimated to model a traitlike persistent alcohol dependence factor throughout emerging and young adulthood and 2 residual statelike alcohol dependence factors limited to emerging adulthood and young adulthood, respectively. We accounted for those alcohol dependence factors by modeling 3 two-way interaction effects between the DRD4 VNTR polymorphism and the 3 developmentally specific environment factors. Carriers of the DRD4 long allele showed greater susceptibility to environmental effects; they showed more persistent symptoms of alcohol dependence as childhood adversity increased and more alcohol dependence symptoms limited to emerging adulthood as college/Greek organization involvement increased. Alcohol dependence among noncarriers of the long allele, however, did not differ as a function of those environments. Although replication is necessary, these findings highlight the importance of repeated phenotypic assessments across development and modeling both distal and proximal environments and their interaction with genetic susceptibility at specific developmental stages.  相似文献   
456.
The visual dimension has featured prominently in person perception in the last 25 years. Alone, this dimension cannot give the complete 'picture' of others because language and speech (i.e., the auditory dimension) are also highly informative. Social-cognition research investigates the role of auditory information for impression formation. In a series of experiments, we tested perceived competence, hirability, and socio-intellectual status of different targets based on their regional accents. Given identical content of statements in different conditions of an alleged job interview, regional German accents (Saxon, Bavarian, and Berlin) resulted in lower perceived competence and hirability than standard German, even though the Bavarian accent at the same time resulted in higher ratings of socio-intellectual status compared to other regional accents (Experiment 1). These findings were confirmed when using a broader population sample and a 'matched guise' technique (Experiment 2). Our findings indicate that regional accents, similar to faces, can be very powerful in creating differentiated pictures of individuals.  相似文献   
457.
This study tests the ability of classroom emotional climate to moderate anxious solitary children's risk for peer exclusion over a 3-year period from 3rd through 5th grade. Six hundred eighty-eight children completed peer nominations for anxious solitude and peer exclusion in the fall and spring semesters of each grade, and observations of classroom emotional climate were conducted at the same time points. Results revealed a positive relation between anxious solitude and peer exclusion in the fall semester of each grade. However, in classrooms with supportive versus unsupportive emotional climates, this relation demonstrated a different pattern of change from fall to spring semesters. In classrooms with supportive emotional climates, children with high versus low levels of anxious solitude experienced relative elevation in fall peer exclusion, but this disappeared by the spring, such that spring peer exclusion levels were equalized among children who differed in anxious solitude. This result is consistent with hypotheses guided by the Child × Environment model. However, in classrooms with unsupportive emotional climates, results did not conform to expectations that children with high anxious solitude would experience stable or increased peer exclusion over time.  相似文献   
458.
Predicting continued problematic levels of drinking after the early 20's could help with early identification of persons at risk. This study investigated whether hangover insensitivity could predict postcollege drinking and problems beyond the variance due to drinking patterns. In a preliminary study, 134 college seniors from a laboratory study of hangover (Time 1) were contacted and assessed 1-4 years (M = 2.3) later (Time 2). Hangover severity was studied after controlled alcohol administration to a specific dose while controlling sleep and environmental influences. Hangover severity at Time 1 was used to predict Time 2 drinking volume and problems while controlling for relevant demographics and Time 1 drinking volume. Hangover insensitivity at Time 1 tended to predict a clinical level of alcohol problems with a large statistical effect size. Hangover sensitivity also correlated positively with sensitivity to alcohol intoxication. Hangover severity did not predict future drinking volume. Hangover insensitivity correlates with insensitivity to intoxication and might predict more serious alcohol problems in the future, suggesting that a future larger study is warranted. Hangover insensitivity could result from physiological factors underlying low sensitivity to alcohol or risk for alcoholism.  相似文献   
459.
For Winnicott, at the root of psychic life is primary creativity from which meaningfulness emerges spontaneously. One non-psychoanalytic source of Winnicott's view can be found in the work of the English romantic poets Wordsworth and Coleridge. Winnicott discovered in these poets kindred spirits who deepened his appreciation of the delicate area between what is perceived and what conceived. The author suggests one way to read Winnicott's theory of primary creativity is as a re-imagining of what it means to have contact with reality. For Winnicott, the emphasis is less on conflict between pleasure and reality and more on contrast between two different kinds of relationship with reality as it becomes increasingly external.  相似文献   
460.
Despite the fact that physical education holds great promise for the promotion of public health, urban African American girls’ interest and participation in physical education tends to decline with age. Using the Theory of Planned Behavior and feminist poststructuralist theory, this study was designed to examine African American girls’ physical education participation and possible social, cognitive, and motivational factors that drive them away from future intentions toward physical education. Participants were 168 African American girls (age range?=?14–17?years, mean age?=?14.7?years) enrolled in three public high schools from a large urban inner-city school district in the Midwestern United States. Both quantitative and word-data were collected. Results revealed that participation in physical education played an important role in urban African-American girls’ overall physical activity engagement. However, unfavorable attitudes and lack of perceived support impeded their intentions toward future enrollment in physical education. Major factors related to their intentions were: anticipated short- and long-term outcomes, body image concerns, the influence of their mothers, and scheduling conflicts. The findings indicate opportunities for early intervention.  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