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   1168篇
  免费   126篇
  国内免费   164篇
  1458篇
  2023年   22篇
  2022年   30篇
  2021年   22篇
  2020年   58篇
  2019年   25篇
  2018年   18篇
  2017年   50篇
  2016年   41篇
  2015年   33篇
  2014年   58篇
  2013年   133篇
  2012年   79篇
  2011年   62篇
  2010年   70篇
  2009年   61篇
  2008年   56篇
  2007年   50篇
  2006年   57篇
  2005年   45篇
  2004年   18篇
  2003年   24篇
  2002年   35篇
  2001年   14篇
  2000年   17篇
  1999年   12篇
  1998年   8篇
  1996年   15篇
  1995年   13篇
  1994年   13篇
  1993年   16篇
  1992年   15篇
  1991年   14篇
  1990年   9篇
  1989年   11篇
  1988年   9篇
  1987年   14篇
  1986年   17篇
  1985年   13篇
  1984年   19篇
  1980年   10篇
  1979年   8篇
  1977年   22篇
  1976年   10篇
  1975年   9篇
  1974年   16篇
  1973年   7篇
  1972年   13篇
  1967年   9篇
  1966年   12篇
  1965年   7篇
排序方式: 共有1458条查询结果,搜索用时 15 毫秒
881.
One in five adolescents in the United States has engaged in nonsuicidal self‐injury (NSSI), one in eight have had serious thoughts of suicide, and one in 25 have attempted suicide. Research suggests that NSSI may increase risk for suicide attempt, yet little is known about the relationship between NSSI and suicidal ideation or attempts. In a primary care setting, 1,561 youth aged 14–24 years completed a brief, comprehensive, mental health screen as part of a routine well visit to determine which factors were most likely to predict suicidal ideation and attempt among youth engaging in NSSI. Results of recursive partitioning revealed that current depression and history of alcohol use best differentiated youth engaging in NSSI with low versus high risk for suicidal ideation and attempts. This simple algorithm is presented as a clinical screening tool that might aid medical providers in determining which youth would benefit from more intensive assessment and intervention.  相似文献   
882.
Although the Signs of Suicide (SOS) suicide prevention program has been implemented at both the middle and high school levels, its efficacy has been demonstrated previously only among high school students. The current study evaluated SOS implemented in high military impact middle schools. Compared to controls, SOS participants demonstrated improved knowledge about suicide and suicide prevention, and participants with pretest ideation reported fewer suicidal behaviors at posttest than controls with pretest ideation. These results provide preliminary evidence for SOS's efficacy as a suicide prevention program for middle school students.  相似文献   
883.
Risk for suicide is elevated among older men. We examined whether value placed on autonomy amplifies the relation between depressive symptoms and suicide risk differently for older men and women. Participants were 98 community‐dwelling older adults, M age 73.6 (SD = 8.6), 65.1% female, 93.1% White. Questionnaires measured suicide risk (SBQ‐R), depressive symptoms (CESD), and value placed on autonomy (PSI‐II autonomy). Among men, depressive symptoms were associated with suicide risk only when PSI‐II autonomy was elevated. Among women, greater depressive symptoms were associated with suicide risk at all levels of PSI‐II autonomy. Further research on attitudes toward autonomy is warranted.  相似文献   
884.
Nonsuicidal self‐injury is especially common in adolescents and young adults. Self‐injury may be related to shame or guilt—two moral emotions—as these differentially predict other maladaptive behaviors. Using a college sample, we examined not only how shame‐proneness, guilt‐proneness, and internalizing emotional tendencies related to self‐injury, but also whether these moral emotions moderate the relation between internalizing tendencies and self‐injury. High shame‐proneness was associated with higher frequencies of self‐injury. High guilt‐proneness was associated with less self‐injury, although this effect was mitigated at higher levels of internalizing tendencies. These results suggest shame‐proneness is a risk factor for self‐injury, while guilt‐proneness is protective.  相似文献   
885.
Research suggests that both the military and veteran and the lesbian, gay, bisexual, and transgender (LGBT) populations may be at increased risk for suicide. A literature review was conducted to identify research related to suicide risk in the LGBT military and veteran populations. Despite the paucity of research directly addressing this issue, themes are discussed evident in the literature on LGBT identity and suicide risk as well as LGBT military service members and veterans. Factors such as social support and victimization appear to be particularly relevant. Suggestions are made with respect to future research that is needed on this very important and timely topic.  相似文献   
886.
887.
The independence of action of controllability and predictability has recently been questioned by research demonstrating that the effects of control over shock termination can be mimicked by feedback stimuli when a contextual fear measure is used. This suggests that the varied effects of controllability, particularly controllability of shock termination, may result not from controllability per se but from predictability of shock absence. The present experiments address this issue by examining whether controllability and predictability similarly affect contextual fear under several parametric conditions. In Experiment 1, control over shock termination was found to reduce contextual fear at an earlier point in training than prediction of shock absence. Experiment 2 demonstrated an effect of controllability under conditions in which the feedback effect is precluded. Experiment 3 examined the possibility that the group differences observed in the above experiments could be due to a potential difference in the conditionability of the response-produced stimulation and the external feedback stimulus. The outcome of this study makes it unlikely that this is the case, since no evidence of overshadowing of the feedback stimulus was observed on a test of its associative strength. These experiments suggest that the effects of controllability may not be reducible to those of predictability. Furthermore, they have important implications for theoretical proposals concerning the effect of feedback on contextual fear.  相似文献   
888.
889.
890.
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