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   471篇
  免费   19篇
  国内免费   2篇
  2022年   4篇
  2021年   4篇
  2020年   7篇
  2019年   9篇
  2018年   17篇
  2017年   8篇
  2016年   7篇
  2015年   10篇
  2014年   8篇
  2013年   37篇
  2012年   16篇
  2011年   16篇
  2010年   9篇
  2009年   10篇
  2008年   14篇
  2007年   13篇
  2006年   15篇
  2005年   18篇
  2004年   12篇
  2003年   9篇
  2002年   17篇
  2001年   13篇
  2000年   8篇
  1999年   11篇
  1998年   11篇
  1997年   5篇
  1996年   8篇
  1995年   5篇
  1994年   8篇
  1993年   10篇
  1992年   7篇
  1991年   14篇
  1990年   8篇
  1989年   5篇
  1987年   7篇
  1986年   5篇
  1984年   6篇
  1983年   8篇
  1982年   7篇
  1981年   4篇
  1980年   4篇
  1979年   4篇
  1978年   5篇
  1977年   4篇
  1973年   7篇
  1972年   3篇
  1971年   5篇
  1969年   3篇
  1968年   5篇
  1967年   8篇
排序方式: 共有492条查询结果,搜索用时 15 毫秒
151.
This study explores the lived experience of anorexia nervosa from the perspective of those who use pro-recovery websites for eating disorders. Fourteen people participated in an online focus group or an e-interview. Data were analysed using interpretative phenomenological analysis. Participants described their disorder as a functional tool for avoiding and coping with negative emotions, changing their identity and obtaining control. A central theme was the experience of an ‘anorexic voice’ with both demonic and friendly qualities. This voice felt like an external entity that criticised individuals and sometimes dominated their sense of self, particularly as anorexia nervosa got worse. Applying dialogical theory suggests a new model of anorexia nervosa, where the anorexic voice is a self-critical position, which disagrees with and attempts to dominate the more rational self. It is suggested that to move on from anorexia nervosa, the individual needs to address his/her anorexic voice and develop a new dominant position that accepts and values his/her sense of self.  相似文献   
152.
While velocity generation is an obvious prerequisite to proficient tennis serve performance, it is also the only stroke where players are obliged to negotiate a unique target constraint. Therefore, the dearth of research attending to the accuracy component of the serve is surprising. This study compared the body, racquet and ball kinematics characterising successful serves and service faults, missed into the net, in two groups of elite junior female players and one professional female tennis player. Three-dimensional body, racquet and ball kinematics were recorded using a 22-camera VICON motion analysis system. There were no differences in body kinematics between successful serves and service faults, suggesting that service faults cannot be attributed to a single source of biomechanical error. However, service faults missing into the net are characterized by projection angles significantly further below the horizontal, implying that consistency in this end-point parameter is critical to successful performance. Regulation of this parameter appears dependent on compensatory adjustments in the distal elbow and wrist joints immediately prior to impact and also perceptual feedback. Accordingly, coordination of the distal degrees of freedom and a refined perception-action coupling appear more important to success than any isolated mechanical component of the service action.  相似文献   
153.
The important ability to discriminate facial expressions of emotion develops early in human ontogeny. In the present study, 7-month-old infants’ event-related potentials (ERPs) in response to angry and fearful emotional expressions were measured. The angry face evoked a larger negative component (Nc) at fronto-central leads between 300 and 600 ms after stimulus onset when compared to the amplitude of the Nc to the fearful face. Furthermore, over posterior channels, the angry expression elicited a N290 that was larger in amplitude and a P400 that was smaller in amplitude than for the fearful expression. This is the first study that shows that the ability of infants to discriminate angry and fearful facial expressions can be measured at the electrophysiological level. These data suggest that 7-month-olds allocated more attentional resources to the angry face as indexed by the Nc. Implications of this result may be that the social signal values were perceived differentially, not merely as “negative”. Furthermore, it is possible that the angry expression might have been more arousing and discomforting for the infant compared with the fearful expression.  相似文献   
154.
Law enforcement personnel (n = 235) were administered the Learning Transfer Systems Inventory (LTSI) and a transfer measure after completing leadership development training. Although most studies using the LTSI have focused on validation efforts in different linguistic settings, this study is one of the few to examine the relationship between the LTSI factors and a proximal transfer outcome score (as measured by intent to transfer). Motivation to transfer, transfer design, and transfer performance expectations had the strongest relationship with intent to transfer, and the motivation subscales (motivation to transfer, performance expectations, and outcome expectations) accounted for the largest amount of unique variance in intent to transfer.  相似文献   
155.
156.
Most philosophers of emotion endorse a compound account of the emotions: emotions are wholes made of parts; or, as I prefer to put it, emotions are mental states that supervene on other (mental) states. The goal of this paper is to ascertain how the intentionality of these subvening members relates to the intentionality of the emotions. Towards this end, I proceed as follows. First, I discuss the problems with the account Justin D'Arms and Daniel Jacobson offer of the intentionality of the emotions; I argue their account is fundamentally misguided by virtue of being motivated by a misunderstanding of the nature of propositional attitudes. Second, I argue against Peter Goldie's claim that an affective component of an emotion contributes to its intentionality. Third, I offer my own compound account of emotions. I argue (1) emotions are mental states that supervene on other mental states, (2) the mental states that constitute the subvenience base of emotion can have nonconceptual and/or conceptual representational content, and (3) an emotion's intentionality supervenes on (but is often not identical to) the intentionality of only one of its subvening members, specifically, the evaluative representation.  相似文献   
157.
Few studies have examined whether and how receiving an sexually transmitted disease (STD) diagnosis while in a romantic relationship relates to condom use and psychosocial sexual outcomes. Using dyadic data, we examined associations of a personal or a partner’s STD diagnosis during a relationship with condom use, monogamy intentions, condom intentions and attitudes, and STD susceptibility and communication. Because beliefs about how the STD was acquired may shape associations with behavior and cognitions, gender and suspecting that one’s partner had other sexual partners (i.e., partner concurrency) were examined as moderators. Participants were 592 individuals in 296 couples expecting a baby; 108 individuals had been diagnosed with an STD during the relationship. Personal STD diagnosis was unrelated to outcomes or was associated with increased risk. A partner’s diagnosis related to more positive condom intentions and attitudes. Among men who suspected concurrency, both a personal and a partner’s STD diagnosis were associated with less condom use. Receiving the STD diagnosis during pregnancy was associated with greater susceptibility and marginally greater condom use. Results suggest potential benefits of enhancing communication and encouraging joint risk reduction counseling among couples, engaging men more fully in preventive efforts, and capitalizing on the short window during which risk reduction occurs.  相似文献   
158.
This study examined implications of the economic downturn that began in December 2007 for the Community Youth Development Study (CYDS), a longitudinal randomized controlled trial of the Communities That Care (CTC) prevention system. The downturn had the potential to affect the internal validity of the CYDS research design and implementation of science-based prevention in study communities. We used archival economic indicators and community key leader reports of economic conditions to assess the extent of the economic downturn in CYDS communities and potential internal validity threats. We also examined whether stronger economic downturn effects were associated with a decline in science-based prevention implementation. Economic indicators suggested the downturn affected CYDS communities to different degrees. We found no evidence of systematic differences in downturn effects in CTC compared to control communities that would threaten internal validity of the randomized trial. The Community Economic Problems scale was a reliable measure of community economic conditions, and it showed criterion validity in relation to several objective economic indicators. CTC coalitions continued to implement science-based prevention to a significantly greater degree than control coalitions 2 years after the downturn began. However, CTC implementation levels declined to some extent as unemployment, the percentage of students qualifying for free lunch, and community economic problems worsened. Control coalition implementation levels were not related to economic conditions before or after the downturn, but mean implementation levels of science-based prevention were also relatively low in both periods.  相似文献   
159.
Parents seeking help for children with mental health problems are often assigned to a waiting list. We used a discrete choice conjoint experiment to model preferences for interim services that might be used while waiting for the formal assessment and treatment process to begin. A sample of 1,059 parents (92 % mothers) seeking mental health services for 4 to 16 year olds chose between hypothetical interim services composed by experimentally varying combinations of the levels of 13 interim service attributes. Latent Class analysis yielded a four–segment solution. All segments preferred interim options helping them understand how agencies work, enhancing their parenting knowledge and skill, and providing an opportunity to understand or begin dealing with their own difficulties. The Group Contact segment (35.1 %) preferred interim services in meetings with other parents, supported by phone contacts, frequent checkup calls, and wait–time updates. Virtual Contact parents (29.2 %) preferred to meet other parents in small internet chat groups supported by e–mail contact. Membership in this segment was linked to higher education and computer skills. Frequent Contact parents (24.4 %) preferred face–to–face interim services supported by weekly progress checks and wait time updates. Limited Contact parents (11.3 %) were less intent on using interim services. They preferred to pursue interim services alone, with contacts by phone, supported by fewer check–up calls and less frequent wait time updates. All segments were more likely to enroll in interim services involving their child.  相似文献   
160.
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