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   979篇
  免费   7篇
  986篇
  2024年   6篇
  2020年   15篇
  2019年   17篇
  2018年   30篇
  2017年   17篇
  2016年   27篇
  2015年   6篇
  2014年   13篇
  2013年   119篇
  2012年   37篇
  2011年   29篇
  2010年   22篇
  2009年   35篇
  2008年   30篇
  2007年   50篇
  2006年   33篇
  2005年   29篇
  2004年   29篇
  2003年   35篇
  2002年   29篇
  2001年   17篇
  2000年   29篇
  1999年   13篇
  1998年   17篇
  1997年   8篇
  1996年   13篇
  1994年   10篇
  1993年   6篇
  1992年   9篇
  1991年   6篇
  1990年   14篇
  1989年   9篇
  1988年   10篇
  1987年   11篇
  1986年   12篇
  1985年   13篇
  1984年   13篇
  1983年   7篇
  1982年   7篇
  1981年   6篇
  1978年   6篇
  1976年   7篇
  1975年   6篇
  1973年   11篇
  1970年   7篇
  1961年   6篇
  1959年   7篇
  1957年   6篇
  1951年   8篇
  1950年   6篇
排序方式: 共有986条查询结果,搜索用时 0 毫秒
801.
    
In order to examine risk factors for attempting suicide in heroin dependent patients, a group of 527 abstinent opiate dependent patients had a psychiatric interview and completed the Childhood Trauma Questionnaire. Patients who had or had never attempted suicide were compared on putative suicide risk factors. It was found that 207 of the 527 heroin abusers (39.3%) had attempted suicide. Attempters were younger; more were female, reported childhood trauma, a family history of suicidal behavior, a history of aggression, treatment with antidepressant medication, and alcohol and cocaine dependence. Logistic regression revealed that a family history of suicidal behavior, alcohol dependence, cocaine dependence, and treatment with antidepressant medication were significant predictors of attempting suicide. These results suggest that attempting suicide is common among opiate dependent patients and that both distal and proximal risk factors may play a role.  相似文献   
802.
    
In this interview, Clemmont E. Vontress, a pioneer of cross‐cultural counseling, reflects on his life and work. He shares personal stories about the people and events in his life that had a major impact on his theory formulation; research and clinical work; and publications in culture, race, ethnicity, and counseling. En esta entrevista, Clemmont E. Vontress, un pionero de la consejería trans‐cultural, reflexiona sobre su vida y su trabajo. Comparte historias personales sobre la gente y los acontecimientos de su vida que tuvieron un impacto significativo en la formulación de su teoría; investigación y trabajo clínico; y publicaciones sobre cultura, raza, etnicidad, y consejería.  相似文献   
803.
    
Previous research has demonstrated that grouping information enhances enumeration, and that this advantage is significantly greater for observers with expertise in dynamic visuospatial tasks (e.g. air traffic controllers). We sought to elucidate whether this advantage is the result of over‐learned, automated responding in an enumeration experiment where many of the stimuli were incongruent as to canonical arrangement and numerosity. If so, we predicted that experts' performance would be more severely affected than novices'; if not, and experts continued to perform better than novices, we predicted that their response times should increase, reflective of the additional cognitive load needed. We demonstrated the latter is so. Experts continued to out‐perform novices but their response times were significantly slower suggesting that expertise is not rigid and automatic but, rather, is flexible and responsive to the specific situation, allowing experts to switch between strategies. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   
804.
    
Many students struggle with statistical concepts such as interaction. In an experimental group, participants took a paper‐and‐pencil test and then were given training to establish equivalent classes containing four different statistical interactions. All participants formed the equivalence classes and showed maintenance when probes contained novel negative exemplars. Thereafter, participants took a second paper‐and‐pencil test. Participants in the control group received two versions of the paper‐and‐pencil test without equivalence‐based instruction. All participants in the experimental group showed increased paper‐and‐pencil test scores after forming the interaction‐indicative equivalence classes. Class‐indicative responding also generalized to novel exemplars and the novel question format used in the paper‐and‐pencil test. Test scores did not change with repetition for control group participants. Implications for behavioral diagnostics and teaching technology are discussed.  相似文献   
805.
    
In this article, we examined the impact of language (i.e., native English speakers vs. non-native English speakers) on two aspects of information processing associated with multinational coalition operations in a simulated precrisis, command and control (C2) headquarters (HQ). First, we examined the impact of language on situation awareness (SA) and confidence in the participants' SA responses. Second, we examined the participants' responses to questions about various aspects of language, information sharing, decision-making, identity, and cultural issues that exist within a multinational coalition operation C2 HQ. The primary findings from this work revealed that there was very little impact of language on SA and confidence and that both language groups overwhelmingly shared the same views on information sharing, decision-making, and organizational/cultural issues.  相似文献   
806.
    
ABSTRACT

Errorless learning (EL) is an approach in which errors are eliminated or reduced as much as possible while learning of new information or skills. In contrast, during trial-and-error???or errorful???learning (TEL) errors are not reduced and are often even promoted. There is a complex and conflicting pattern of evidence whether EL or TEL may result in better memory performance. One major confound in the extant literature is that most EL studies have not controlled for the number of errors made during TEL, resulting in a large variability in the amount of errors committed. This variability likely explains why studies on the cognitive underpinnings of EL and TEL have produced mixed findings. In this study, a novel object-location learning task was employed to examine EL and TEL in 30 healthy young adults. The number of errors was systematically manipulated, allowing us to investigate the impact of frequency of errors on learning outcome. The results showed that recall from memory was significantly better during EL. However, the number of errors made during TEL did not influence the performance in young adults. Altogether, our novel paradigm is promising for measuring EL and TEL, allowing for more accurate analyses to understand the impact of error frequency on a person’s learning ability and style.  相似文献   
807.
    
Rats were trained to avoid shock and then were given flooding in conjunction with a peripheral muscle relaxant, suxomethonium bromide. Control groups received injections of distilled water and/or the drug after flooding. The drug acted to change the spontaneous behaviour of the animals during flooding, but had no significant effect on the efficacy of flooding as evidenced in subsequent avoidance-extinction responding. Implications for the relaxation theory of flooding were discussed.  相似文献   
808.
809.
Although past research has demonstrated a “health disadvantage” for Puerto Rican adults, very little is known about correlates of health among this group. Given Puerto Ricans’ unique experiences of migration and settlement, an ethnic enclave framework that integrates nativity, ethnic density, and neighborhood SES may offer insight into factors influencing Puerto Ricans’ health. This study uses a sample of 449 adult mainland- and island-born Puerto Ricans living in New York City and Chicago. The data, collected as a part of the MIDUS Survey of Minority Groups, are stratified by neighborhood ethnic density and neighborhood SES, allowing for the examination of the individual and joint influences of neighborhood characteristics on physical health. Results revealed that ethnic density and neighborhood SES were not independently or interactively related to physical health for mainland-born Puerto Ricans. However, the interaction between ethnic density and neighborhood SES was related to self-reported health, functional limitations, and health symptoms for island-born Puerto Ricans. Island-born Puerto Ricans living in ethnically dense, low SES neighborhoods reported worse health than island-born Puerto Ricans living in other types of neighborhoods. This may be a result of isolation from resources both within and outside the neighborhood.  相似文献   
810.
    
A significant challenge for researchers and clinicians is in the process of determining culturally sensitive strategies to ensure treatment effectiveness with ethnic populations in the United States. This article highlights key aspects of treating Chinese American families where a child is struggling with adolescent depression. Relevant literatures associated with adolescent depression and effective treatment of Chinese Americans are reviewed and organized according to the dimensions of therapist knowledge, awareness, and skills. Therapist guidelines are provided using key aspects of cognitive behavioral therapy. Additional suggestions are presented for culturally competent therapy with Chinese American youth and their families.  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