全文获取类型
收费全文 | 1868篇 |
免费 | 74篇 |
专业分类
1942篇 |
出版年
2020年 | 29篇 |
2018年 | 27篇 |
2017年 | 34篇 |
2016年 | 35篇 |
2015年 | 33篇 |
2014年 | 40篇 |
2013年 | 191篇 |
2012年 | 74篇 |
2011年 | 53篇 |
2010年 | 34篇 |
2009年 | 28篇 |
2008年 | 61篇 |
2007年 | 62篇 |
2006年 | 51篇 |
2005年 | 53篇 |
2004年 | 49篇 |
2003年 | 46篇 |
2002年 | 60篇 |
2001年 | 32篇 |
2000年 | 26篇 |
1999年 | 25篇 |
1998年 | 28篇 |
1997年 | 33篇 |
1996年 | 36篇 |
1995年 | 36篇 |
1994年 | 31篇 |
1993年 | 23篇 |
1992年 | 26篇 |
1991年 | 24篇 |
1990年 | 26篇 |
1989年 | 26篇 |
1988年 | 19篇 |
1987年 | 24篇 |
1986年 | 23篇 |
1985年 | 30篇 |
1984年 | 34篇 |
1983年 | 35篇 |
1982年 | 37篇 |
1981年 | 27篇 |
1980年 | 38篇 |
1979年 | 31篇 |
1978年 | 29篇 |
1977年 | 41篇 |
1976年 | 42篇 |
1975年 | 22篇 |
1974年 | 41篇 |
1973年 | 27篇 |
1972年 | 13篇 |
1969年 | 18篇 |
1967年 | 13篇 |
排序方式: 共有1942条查询结果,搜索用时 15 毫秒
211.
212.
A Longitudinal Study of Racial Discrimination and Risk for Death Ideation in African American Youth 下载免费PDF全文
Rheeda Walker PhD David Francis PhD Gene Brody PhD Ronald Simons PhD Carolyn Cutrona PhD Frederick Gibbons PhD 《Suicide & life-threatening behavior》2017,47(1):86-102
Although multiple studies have found that African Americans commonly experience racial discrimination, available studies have yet to examine how perceived racism might be related to suicide vulnerability in African American youth. The purpose of this study was to examine a framework for how perceived racial discrimination contributes to symptoms of depression and anxiety as well as subsequent suicide ideation and morbid ideation. Data were obtained from 722 African American youth at mean age 10.56 years (SD = 0.64); a second wave of data was obtained 2 years later. Results revealed both a direct effect and mediated effects of perceived racism on later suicide and morbid ideation. For boys and girls, the effect of perceived racism was mediated by symptoms of depression. However, the association was mediated by anxiety for girls, but not for boys in the current sample. Implications for future research and interventions are discussed. 相似文献
213.
International Journal for Philosophy of Religion - 相似文献
214.
215.
216.
217.
218.
219.
Although researchers using parental self-report data have questioned its validity (Holden, 2001) and called for more work in this area (Krevans & Gibbs, 1996; Locke & Prinz, 2002), methodological concerns regarding self-report about parenting practices have not been addressed adequately. The susceptibility of parental report to systematic distortions suggests a need for research on ways to improve self-report. This paper attempts to synthesize research findings from other fields (e.g., survey methodology) about ways to improve the validity of self-report, and to discuss the implications for self-report of parenting behaviors. Methods for improving self-report are presented for each of the 5 major tasks in responding to a question: (1) understanding the question, (2) recalling relevant behavior, (3) inference and estimation, (4) mapping the answer onto the response format, and (5) “editing” the answer for reasons of social desirability. Self-administered interviewing, audio-computer-assisted interviewing, pretesting, conversational interviewing, and the decompositional item may be among the best candidates for use in parental self-report. Recommendations are offered with respect to strategies that might prove useful in improving parental assessment of parenting, and to research efforts to evaluate the utility and potential costs of these strategies. 相似文献
220.