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   812篇
  免费   57篇
  869篇
  2023年   7篇
  2022年   4篇
  2021年   22篇
  2020年   25篇
  2019年   30篇
  2018年   25篇
  2017年   39篇
  2016年   38篇
  2015年   20篇
  2014年   38篇
  2013年   89篇
  2012年   49篇
  2011年   48篇
  2010年   38篇
  2009年   30篇
  2008年   28篇
  2007年   37篇
  2006年   28篇
  2005年   25篇
  2004年   21篇
  2003年   34篇
  2002年   16篇
  2001年   14篇
  2000年   18篇
  1999年   11篇
  1998年   10篇
  1997年   4篇
  1996年   4篇
  1995年   10篇
  1994年   4篇
  1993年   9篇
  1992年   8篇
  1989年   4篇
  1988年   5篇
  1987年   4篇
  1985年   4篇
  1984年   6篇
  1983年   5篇
  1977年   5篇
  1976年   3篇
  1975年   4篇
  1974年   2篇
  1972年   5篇
  1971年   4篇
  1970年   2篇
  1969年   3篇
  1968年   2篇
  1967年   2篇
  1964年   3篇
  1951年   3篇
排序方式: 共有869条查询结果,搜索用时 8 毫秒
51.
Despite pervasive evidence of the harmful impact of neglect on children’s adjustment, individual differences in adaptation persist. This study examines parental distress as a contextual factor that may moderate the relation between neglect and child adjustment, while considering the specificity of the relation between neglect and internalizing versus externalizing problems. In a sample of 66 children (33 with a documented child protective services history of neglect prior to age six), neglect predicted internalizing, and to a lesser extent externalizing, problems as rated by teachers at age seven. Parental distress moderated the relation between neglect and internalizing, but not externalizing, problems. Specifically, higher levels of neglect predicted more internalizing problems only among children of distressed parents. These findings indicate that parent-level variables are important to consider in evaluating the consequences of neglect, and point to the importance of considering contextual factors when identifying those children most at risk following neglect.  相似文献   
52.
53.
54.
This article shows how to apply generalized additive models and generalized additive mixed models to single-case design data. These models excel at detecting the functional form between two variables (often called trend), that is, whether trend exists, and if it does, what its shape is (e.g., linear and nonlinear). In many respects, however, these models are also an ideal vehicle for analyzing single-case designs because they can consider level, trend, variability, overlap, immediacy of effect, and phase consistency that single-case design researchers examine when interpreting a functional relation. We show how these models can be implemented in a wide variety of ways to test whether treatment is effective, whether cases differ from each other, whether treatment effects vary over cases, and whether trend varies over cases. We illustrate diagnostic statistics and graphs, and we discuss overdispersion of data in detail, with examples of quasibinomial models for overdispersed data, including how to compute dispersion and quasi-AIC fit indices in generalized additive models. We show how generalized additive mixed models can be used to estimate autoregressive models and random effects and discuss the limitations of the mixed models compared to generalized additive models. We provide extensive annotated syntax for doing all these analyses in the free computer program R.  相似文献   
55.
56.
Joanna Sikora 《Sex roles》2014,70(9-10):400-415
This paper compares science subject choices and science-related career plans of Australian adolescents in single-sex and coeducational schools. Data from the nationally representative Longitudinal Survey of Australian Youth collected from students who were 15 years of age in 2009 show that, in all schools, boys are overrepresented in physical science courses and careers, while girls are overrepresented in life science. It appears that students in all-girls schools are more likely to take physical science subjects and are keener on careers in physics, computing or engineering than their counterparts in coeducational schools. However, multi-level logit regressions reveal that most apparent differences between students in single-sex and coeducational schools are brought about by differentials in academic achievement, parental characteristics, student’s science self-concept, study time and availability of qualified teachers. The only differences remaining after introducing control variables are the higher propensity of boys in single-sex schools to plan a life science career and the marginally lower propensity of girls in girls-only schools to study life science subjects. Thus, single-sex schooling fosters few non-traditional choices of science specialization. The paper discusses the likely consequences of gender segregation in science and a limited potential of single-sex schools to reduce them. The results of the current analysis are contrasted with a comparable study conducted in Australia a decade ago to illustrate the persistence of the gender gap in science field choices.  相似文献   
57.
Past measurement of vitality has included both emotional and physical components. Since aspects of physical vitality such as fatigue can be indicative of physical illness, the usefulness of existing measures of vitality to predict health is limited. This research was designed to examine the psychometric properties of a new Mental Vitality Scale and to test its associations with measures of cardiovascular health over the course of 2 years. The measure of mental vitality was administered in a two-part study using three different samples. In part 1, the reliability and validity of the scale was assessed with a student and a clinic sample. In part 2, medical data on mental and physical health were abstracted over a two-year period from 1041 patient records from a multi-specialty medical practice, and mental vitality assessed through a mailed questionnaire. The findings indicate that the Mental Vitality Scale is a valid and reliable questionnaire for measuring this construct. Mental vitality was also associated with reduced odds of several cardiovascular outcomes and prospective analyses suggest that mental vitality may serve a protective function in the development of cardiovascular disease. The results lend support for the importance of mental vitality as a construct that may be relevant for considering resilience in relation to cardiovascular disease.  相似文献   
58.
Lipedema is a chronic, progressive adipose tissue disorder that may impact the quality of life of women who suffer from it. The main aim of this study was to asses the role of perceived symptom severity, physical and psychological functioning with the disease in predicting quality of life in patients with lipedema. We conducted an online study with 329 participants who responded to five questionnaires measuring quality of life (World Health Organization Quality of Life BREF), lipedema symptom severity, mobility (Lower Extremity Functional Scale), depression (Patients Health Questionnaire-9), and appearance-related distress (Derriford Appearance Scale 24). Multiple hierarchical regression analyses showed that appearance-related distress and depression explained significantly more variance in quality of life when added to the symptom severity and mobility. Lower quality of life was predicted by higher symptom severity, lower mobility, higher appearance-related distress and higher depression severity. Appearance-related distress and depression constitute important aspects of psychological functioning in women with lipedema. Considering their relationship with quality of life, their assessment should be included in lipedema treatment with appropriate interventions aimed at decreasing appearance-related distress, as well as preventing and addressing depression.  相似文献   
59.
The present research investigates how intergroup apologies, defined as apologies between two groups, affect perceived remorse and outgroup attitudes (e.g., explicit and implicit), in the context of power asymmetries. We recruited participants from two countries that differ in perceived power: South Korea and the United States. Participants read a vignette describing a violent act committed by an outgroup member (Korean or American), with or without an intergroup apology. Participants answered questions assessing perceived remorse and explicit attitudes toward the outgroup, followed by the Implicit Association Test (Greenwald, McGhee, & Schwartz, 1998). Results revealed that Koreans perceived less remorse following an intergroup apology from the United States, compared to when they did not read an intergroup apology. Further, a mediated moderation analysis indicated that perceived remorse mediated the relationship between apology and explicit attitudes towards the United States. However, an analogous effect for implicit attitudes was only marginally significant. In contrast, among American participants, no effect of the apology on perceived remorse, explicit attitudes, or implicit attitudes and no evidence for a mediation was found. We discuss the implications of these effects on understanding the effectiveness of intergroup apologies between countries that differ in perceived power.  相似文献   
60.
There may be significant differences in coping styles across ethnicities. Previous research has suggested disparities in the number of individuals who utilize repressive adaptive coping style among cultural groups. Repressive adaptive style is a coping mechanism in which individuals report low distress levels while they actually experience high levels of stress. Developing an enhanced understanding of the prevalence of the utilization of repressive adaptive style in different ethnic groups is important for informing intervention techniques to better account for the cultural influences on mental health. The present study investigated the utilization of repressive adaptive style across American Indian (n?=?31), African American (n?=?53), and European American (n?=?48) children in the Midwest. The age range of the children was 10 to 13 years and 50.8% were male. Dependent measures included the Children’s Social Desirability Scale and the State-Trait Anxiety Inventory for Children. Results indicated significant differences in reports of anxiety between ethnic groups. Additionally, it was discovered that African American and European American children utilized repressive adaptive style more than American Indian children, albeit not significantly. Because of the high rates of suicide and emotional distress believed to be experienced by American Indian children this result is interesting. Continued research investigating protective factors, such as high levels of cultural identity and connectedness, is warranted.  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