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   416篇
  免费   11篇
  国内免费   52篇
  2023年   3篇
  2020年   11篇
  2017年   8篇
  2016年   11篇
  2015年   11篇
  2014年   3篇
  2013年   21篇
  2012年   13篇
  2011年   13篇
  2010年   11篇
  2009年   12篇
  2008年   49篇
  2007年   8篇
  2006年   10篇
  2005年   28篇
  2004年   27篇
  2003年   10篇
  2002年   10篇
  2001年   7篇
  2000年   4篇
  1999年   5篇
  1998年   4篇
  1995年   4篇
  1992年   3篇
  1991年   6篇
  1990年   4篇
  1989年   7篇
  1988年   6篇
  1987年   8篇
  1986年   5篇
  1985年   3篇
  1984年   5篇
  1982年   10篇
  1981年   10篇
  1980年   6篇
  1979年   7篇
  1978年   4篇
  1977年   4篇
  1976年   6篇
  1975年   9篇
  1973年   11篇
  1972年   5篇
  1971年   17篇
  1970年   7篇
  1969年   11篇
  1967年   4篇
  1966年   4篇
  1965年   2篇
  1964年   4篇
  1963年   5篇
排序方式: 共有479条查询结果,搜索用时 140 毫秒
31.
32.
33.
34.
35.
36.
This study adds to the growing literature linking children's experiences in the environment to individual differences in their developing skills in attention, memory, and planning. The authors asked about the extent to which stimulating and sensitive care in the family and in the child-care or school environments would predict these cognitive outcomes. The authors also questioned the primacy of experiences in the first 3 years of life. Data from a sample of 700 first graders whose experiences in the home and in child care or school were evaluated since early infancy revealed that the cumulative quality of the child-rearing environment was related to attention and memory but not to planning and that the quality of the family environment was more strongly associated with outcomes than was the quality of child care and of school. The quality of both children's early (6 through 36 months) and later (54 months and first grade) environments predicted performance on the attention and memory tasks.  相似文献   
37.
This study examined whether the link between risk factors for conduct problems and low rates of participation in mental health treatment could be decoupled through the provision of integrated prevention services in multiple easily-accessible contexts. It included 445 families of first-grade children (55% minority), living in four diverse communities, and selected for early signs of conduct problems. Results indicated that, under the right circumstances, these children and families could be enticed to participate at high rates in school-based services, therapeutic groups, and home visits. Because different sets of risk factors were related to different profiles of participation across the components of the prevention program, findings highlight the need to offer services in multiple contexts to reach all children and families who might benefit from them. Ellen Pinderhughes's and Karen Bierman's colleagues in the Conduct Problems Prevention Research Group are, in alphabetical order, John D. Coie, Duke University; Kenneth A. Dodge, Duke University; E. Michael Foster, University of North Carolina; Mark T. Greenberg, Pennsylvania State University; John E. Lochman, University of Alabama; and Robert J. McMahon, University of Washington.  相似文献   
38.
39.
Midlife motivational abilities, that is, skills to initiate and persevere in the implementation of goals, have been related to mental and physical health, but their association with risk of mild cognitive impairment (MCI) and Alzheimer's disease (AD) has not yet been directly investigated. This relation was examined with data from the German Study on Ageing, Cognition, and Dementia in Primary Care Patients (AgeCoDe). A total of 3,327 nondemented participants (50.3% of a randomly selected sample) aged 75-89 years were recruited in primary care and followed up twice (after 1.5 and 3 years). Motivation-related occupational abilities were estimated on the basis of the main occupation (assessed at follow-up II) using the Occupational Information Network (O* NET) database, which provides detailed information on worker characteristics and abilities. Cox proportional hazards models were used to evaluate the relative risk of developing MCI and AD in relation to motivation-related occupational abilities, adjusting for various covariates. Over the 3 years of follow-up, 15.2% participants developed MCI and 3.0% developed AD. In a fully adjusted model, motivation-related occupational abilities were found to be associated with a reduced risk of MCI (HR: 0.77; 95% CI: 0.64-0.92). Motivation-related occupational abilities were associated with reduced risk of AD in ApoE ε4 carriers (HR: 0.48; CI: 0.25-0.91), but not in noncarriers (HR: 0.99; CI: 0.65-1.53). These results suggest that midlife motivational abilities are associated with reduced risk of MCI in general and with reduced risk of AD in ApoE ε4 carriers. Revealing the mechanisms underlying this association may inform novel prevention strategies for decelerating cognitive decline in old age.  相似文献   
40.
This study examines perceived stress and its relationship to depressive symptoms, life changes and functional capacity in a large sample of individuals who are positive for the Huntington disease (HD) gene expansion but not yet diagnosed. Participants were classified by estimated proximity to HD diagnosis (far, mid, near) and compared with a non-gene-expanded comparison group. Persons in the mid group had the highest stress scores. A significant interaction between age and time since HD genetic testing was also found. Secondary analyses using data from a different data collection point and including a diagnosed group showed the highest stress scores in the diagnosed group. Possible explanations and implications are discussed.  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