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   372篇
  免费   25篇
  2020年   3篇
  2019年   12篇
  2018年   16篇
  2017年   14篇
  2016年   9篇
  2015年   11篇
  2014年   11篇
  2013年   41篇
  2012年   12篇
  2011年   11篇
  2010年   8篇
  2009年   13篇
  2008年   17篇
  2007年   22篇
  2006年   8篇
  2005年   7篇
  2004年   13篇
  2003年   9篇
  2002年   12篇
  2001年   8篇
  2000年   14篇
  1999年   5篇
  1998年   3篇
  1996年   3篇
  1994年   2篇
  1993年   2篇
  1992年   6篇
  1991年   3篇
  1990年   5篇
  1989年   4篇
  1987年   3篇
  1986年   6篇
  1985年   3篇
  1984年   11篇
  1983年   7篇
  1982年   4篇
  1981年   5篇
  1980年   2篇
  1979年   7篇
  1977年   3篇
  1976年   4篇
  1975年   3篇
  1974年   3篇
  1973年   5篇
  1972年   4篇
  1971年   2篇
  1970年   2篇
  1969年   2篇
  1967年   2篇
  1965年   3篇
排序方式: 共有397条查询结果,搜索用时 46 毫秒
61.
Consistent with a family systems framework, this paper examines the clinical and research literatures to clarify the connection between chronic trauma exposure and family processes with a focus on the social ecology of low-income, urban neighborhoods. Strong empirical evidence demonstrates the impact of chronic trauma on individual family members and, in turn, on multiple family subsystems. Additionally, there is evidence that living under chronically harsh, traumatic circumstances slowly erodes family processes, specifically structure, relations, and coping. However, existing research reflects the problems inherent in sorting out relationships among multiple, often interrelated factors. Future research requires comprehensive theoretical models, such as systemic, transactional, or ecodevelopmental, along with sophisticated research designs, prospective, longitudinal or intervention, and multilevel analytic methods.  相似文献   
62.
The AMA Council on Ethical and Judicial Affairs (CEJA) has written a position paper on how social medical use challenges medical professionalism. The report offers persuasive ethical and practical guidelines for nonclinical internet use, specifically for social networking. This commentary provides a framework from which to apply these guidelines, but adds that there may be important situations in which physicians are not able to act in accordance. The guidelines call for professional reporting of questionable online portrayals or behaviors, but this commentary argues that this may be not only cumbersome to implement, but may violate aspects of constitutional rights. While online social networking may in many ways be a new application of old challenges, there may be other aspects that require novel approaches to medical professionalism.  相似文献   
63.
Social animals have much to gain from observing and responding appropriately to the actions of their conspecific group members. This can in turn lead to the learning of novel behavior patterns (social learning) or to foraging, ranging, or social behavioral choices copied from fellow group members, which do not necessarily result in long-term learning, but at the time represent adaptive responses to environmental cues (public information use). In the current study, we developed a novel system for the study of public information use under fully automated conditions. We modified a classic single-subject laboratory paradigm—matching-to-sample (MTS)—and examined chimpanzees’ ability to interpret and utilize cues provided by the behavior of a conspecific to solve the task. In Experiment 1, two subjects took turns on an identity MTS task, with one subject (the model) performing the first half of the trial and the other subject (the observer) completing the trial using the model’s actions as discriminative cues. Both subjects performed above chance from the first session onwards. In Experiment 2, the subjects were tested on a symbolic version of the same MTS task, with one subject showing spontaneous transfer. Our study establishes a novel method for examining public information use within a highly controlled and automated setting.  相似文献   
64.
This research investigates the temporary involuntary loss of symbolically important, meaningful possessions and how consumers manage self identity in this situation. The losses explored occurred within the context of air travel and included where people accustomed to flying in business class had to travel in economy and where high status in a frequent flyer program was lost. Three stages of fieldwork were conducted; participant observation involving 50 international and domestic flights covering 110,000 miles, depth interviews and engagement online with a range of frequent flyer discussion communities. The short‐term, concealable nature of the losses allowed consumers to manipulate private and public meaning to avoid, where possible, the consequences of the loss on self identity. This study contributes by showing that both private and public meanings of lost possessions can be used in identity construction and how identity negotiation can be avoided. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   
65.
Efficacy trials test whether interventions work under optimal, highly controlled conditions whereas effectiveness trials test whether interventions work with typical clients and providers in real-world settings. Researchers, providers, and funding bodies have called for more effectiveness trials to understand whether interventions produce effects under ecologically valid conditions, which factors predict program effectiveness, and what strategies are needed to successfully implement programs in practice settings. The transition from efficacy to effectiveness with preventive interventions involves unique considerations, some of which are not shared by treatment research. The purpose of this article is to discuss conceptual and methodological issues that arise when making the transition from efficacy to effectiveness research in primary, secondary, and tertiary prevention, drawing on the experiences of two complimentary research groups as well as the existing literature. We address (a) program of research, (b) intervention design and conceptualization, (c) participant selection and characteristics, (d) providers, (e) context, (f) measurement and methodology, (g) outcomes, (h) cost, and (i) sustainability. We present examples of research in eating disorder prevention that demonstrate the progression from efficacy to effectiveness trials.  相似文献   
66.
Research supports the efficacy of both cognitive dissonance (CD) and healthy weight (HW) eating disorders prevention, and indicates that CD can be delivered by peer-facilitators, which facilitates dissemination. This study investigated if peer-facilitators can deliver HW when it is modified for their use and extended follow-up of peer-facilitated CD as compared to previous trials. Based on pilot data, we modified HW (MHW) to facilitate peer delivery, elaborate benefits of the healthy-ideal, and place greater emphasis on consuming nutrient dense foods. Female sorority members (N = 106) were randomized to either two 2-h sessions of CD or MHW. Participants completed assessment pre- and post-intervention, and at 8-week, 8-month, and 14-month follow-up. Consistent with hypotheses, CD decreased negative affect, thin-ideal internalization, and bulimic pathology to a greater degree post-intervention. Both CD and MHW reduced negative affect, internalization, body dissatisfaction, dietary restraint, and bulimic pathology at 14 months.  相似文献   
67.
Studies suggest motor deficit asymmetry may help predict the pattern of cognitive impairment in individuals with Parkinson disease (PD). We tested this hypothesis using a highly validated and sensitive spatial memory task, spatial delayed response (SDR), and clinical and neuroimaging measures of PD asymmetry. We predicted SDR performance would be more impaired by PD-related changes in the right side of the brain than in the left. PD (n = 35) and control (n = 28) participants performed the SDR task. PD participants either had worse motor deficits on the right (RPD) or left (LPD) side of the body. Some participants also had magnetic resonance imaging for measurement of their substantia nigra (SN) volumes. The LPD group performed worse on the SDR task than the RPD and control groups. Right SN volume accounted for a unique and significant portion of the variance in SDR error, with smaller volume predicting poorer performance. In conclusion, left motor dysfunction and smaller right SN volume are associated with poorer spatial memory.  相似文献   
68.
Although employee trust in leaders has garnered substantial empirical research, trust between coworkers has been virtually ignored. Extending the work of D. L. Ferrin, K. T. Dirks, and P. P. Shah (2006), the authors examined the role of group leaders, an influential third party in the workplace, on coworker trust formation. The correlates of the extent to which coworkers trust one another were examined in an investigation of 146 members of 32 work groups representing 4 diverse organizations. In this study, which utilized full network data, coworker trust was operationalized as in-degree centrality in the trust network. Controlling for relational demography and coworker helping behaviors, the authors found, as hypothesized, that coworkers tended to place more trust in fellow coworkers who were also trusted by the teams' formal leaders than in coworkers who were less trusted by leaders. In addition, consistent with the social information processing theory, support was found for the hypothesis that the relationship between leaders' trust and coworker trust is stronger when group performance is poor.  相似文献   
69.
Many decisions related to cigarette smoking require people in an affectively neutral, or "cold," state to predict how they will feel or behave when in a craving, or "hot," state. Research in other domains has revealed that individuals in cold states often underestimate the impact of being in a hot state on their own future behavior. In a study testing whether this is true of cigarette craving, 98 smokers were assigned to one of three conditions: hot (during a high-craving first session, they made predictions about a high-craving state in a second session), cold (during a low-craving first session, they made predictions about a high-craving state in a second session), and comparison (they experienced a high-craving session only). As predicted, in contrast to smokers in the hot group, smokers in the cold group underpredicted the value they would place on smoking during the second session. Results support the existence of a cold-to-hot empathy gap in smokers and help to explain diverse aspects of tobacco addiction.  相似文献   
70.
Gestational cocaine treatment results in significantly increased maternal aggression towards an intruder by postpartum day six, while acute postpartum treatment dose dependently decreases maternal aggressive (MA) behavior. Both increased and decreased aggression in the cocaine-treated dams are correlated with either decreased or increased levels of oxytocin in the amygdala, respectively. The current study was an effort to determine whether the effect of gestational cocaine on maternal aggression is transient or would continue into the postpartum period; whether an intermittent cocaine treatment regimen, which incorporates gestational and postpartum intermittent cocaine treatment, would differ from chronic daily gestational treatment; and finally, whether next generation female offspring of cocaine-treated or control dams would have altered MA behavior and oxytocin system changes attributable to either prenatal drug exposure, rearing condition or both. We now report no increase in maternal aggression following chronic gestational treatment and significantly lower levels of aggression in intermittently treated dams on postpartum day eight, with no significant effects in either group on postpartum day 12. Young adult female offspring of the cocaine-treated and control dams, who reared their own natural litters and were tested on postpartum day eight for maternal aggression, had higher levels of maternal aggression towards an intruder attributable to both prenatal cocaine exposure and rearing condition. Higher aggression in cocaine-reared next generation dams was associated with lower levels of oxytocin in the amygdala. Intergenerational effects of cocaine were apparent with respect to aggression and oxytocin system changes.  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