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   1039篇
  免费   59篇
  国内免费   1篇
  2023年   18篇
  2022年   20篇
  2021年   19篇
  2020年   44篇
  2019年   40篇
  2018年   63篇
  2017年   57篇
  2016年   46篇
  2015年   38篇
  2014年   36篇
  2013年   109篇
  2012年   89篇
  2011年   91篇
  2010年   64篇
  2009年   19篇
  2008年   64篇
  2007年   71篇
  2006年   61篇
  2005年   21篇
  2004年   12篇
  2003年   17篇
  2002年   17篇
  2001年   7篇
  2000年   16篇
  1999年   12篇
  1998年   4篇
  1997年   5篇
  1996年   1篇
  1995年   3篇
  1994年   1篇
  1993年   3篇
  1992年   4篇
  1990年   3篇
  1989年   4篇
  1988年   1篇
  1987年   1篇
  1986年   1篇
  1985年   1篇
  1984年   4篇
  1982年   1篇
  1981年   2篇
  1977年   1篇
  1975年   1篇
  1974年   2篇
  1972年   1篇
  1970年   2篇
  1956年   2篇
排序方式: 共有1099条查询结果,搜索用时 15 毫秒
121.
The study examined whether relationships with extended kin were related to higher levels of mental health and academic functioning among college students. Specifically, the study tested whether perceived emotional support from extended (non-nuclear) family was related to self-esteem, psychological distress, and academic efficacy and dedication above and beyond relationships with one’s primary caregivers, and whether these associations varied by class year in college. The sample consisted of 530 students (average age = 20.82), at a public, four-year university. The results revealed that freshmen and seniors who reported high levels of positive relationships with their extended kin also reported higher levels of academic-efficacy and dedication, as well as lower levels of psychological distress. However, the relation between kin emotional support and these outcomes were not significant for sophomores and juniors. There was also a significant association between kinship support and self-esteem for participants in all four class levels. The study underscores the need to examine extended social support systems among college students, above and beyond those maintained with primary caregivers, as well as the dynamic nature of family support during young adulthood.  相似文献   
122.
Little is known about how social factors influence vulnerability to, and consequences of, HIV infection among men who have sex with men (MSM) in South Africa. This study aimed to analyse social stratification and its links with HIV among MSM in Cape Town, South Africa. Six interviews and six focus group discussions (n = 25) were conducted. Tools were based on the World Health Organisation’s Commission on the Social Determinants of Health framework. Directed content analysis was used to analyse data. Race and education were directly linked to social position. MSM from lower social positions were more vulnerable to HIV, and had more negative consequences of HIV infection, compared to wealthier MSM. Engagement with community leaders, health workers and police to promote inclusion could reduce vulnerability of MSM to HIV. Increased access to free, non-discriminatory HIV-related services would reduce inequities in access to HIV services by MSM.  相似文献   
123.
This paper studies the economic effect of immigration on native working conditions, focusing on the impact of the inflow of immigrant labour on occupational mobility among native workers. Basing on a gender-segmented labour market, we propose an extension of the model presented by Peri and Sparber American Economic Journal: Applied Economics, 1(3), 135-169, (2009). The model controls for gender and time in order to check for potential differences in immigration effects associated with gender or immigrant length of residence. This research reveals the existence of such differences, by showing that female immigrant inflow has a greater positive short-term impact on occupational mobility among female unskilled native workers. In addition, the long-term study discloses a slight occupational assimilation of male immigrants towards employment patterns of male native workers and a permanent confinement of female immigrants in a few “niche jobs”.  相似文献   
124.
Early math skills are determined by higher cognitive processes that are particularly important for acquiring and developing skills during a child's early education. Such processes could be a critical target for identifying students at risk for math learning difficulties. Few studies have considered the use of a structural equation method to rationalize these relations. Participating in this study were 207 preschool students ages 59 to 72 months, 108 boys and 99 girls. Performance with respect to early math skills, early literacy, general intelligence, working memory, and short‐term memory was assessed. A structural equation model explaining 64.3% of the variance in early math skills was applied. Early literacy exhibited the highest statistical significance (β = 0.443, < 0.05), followed by intelligence (β = 0.286, < 0.05), working memory (β = 0.220, < 0.05), and short‐term memory (β = 0.213, < 0.05). Correlations between the independent variables were also significant (< 0.05). According to the results, cognitive variables should be included in remedial intervention programs.  相似文献   
125.
126.
127.
128.
Narrative theories of personal identity have traditionally taken literary characters as models to better understand how our identities are constituted through the narratives of our lives. However, there have been several recent criticisms of these comparisons, showing that philosophers of personal identity paid no attention to the nature of literary characters, and consequently, these philosopher’s comparisons were under-motivated. In the present article, I rely on a cognitive framework to define literary characters. From that point of view, I assert that it is fruitful to compare ourselves with literary characters to understand the role that the narratives told by others about ourselves play in the constitution of our own personal identities.  相似文献   
129.
130.
This study examines the mediating role of effortful control between reactive temperament traits (negative affectivity and extraversion) and children’s internalizing and externalizing behavioural problems. The sample was composed of 424 non-clinical children from 3 to 6 years of age (60% male). Use of a structural equation model revealed effortful control-mediated relations between reactive temperament traits and behavioural problems. Nevertheless, uniquely and directly, negative affect predicted externalizing problems and extraversion predicted internalizing problems. Assessment of invariance by children’s sex showed that the mediating role of effortful control tends to be stronger for externalizing problems in boys than in girls. Results showed no significant age differences. According to these results, effortful control as a method of self-regulation seems to be an essential process through which reactive temperament traits affect a child’s psychological adjustment.  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