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   745篇
  免费   25篇
  770篇
  2020年   7篇
  2019年   5篇
  2018年   13篇
  2017年   13篇
  2016年   14篇
  2015年   9篇
  2014年   11篇
  2013年   72篇
  2012年   24篇
  2011年   23篇
  2010年   19篇
  2009年   12篇
  2008年   25篇
  2007年   24篇
  2006年   30篇
  2005年   26篇
  2004年   29篇
  2003年   32篇
  2002年   23篇
  2001年   16篇
  2000年   15篇
  1999年   21篇
  1998年   16篇
  1997年   7篇
  1996年   13篇
  1995年   12篇
  1994年   14篇
  1993年   12篇
  1992年   12篇
  1991年   13篇
  1990年   12篇
  1989年   9篇
  1988年   6篇
  1987年   5篇
  1986年   13篇
  1985年   11篇
  1984年   10篇
  1983年   13篇
  1982年   14篇
  1981年   7篇
  1980年   12篇
  1979年   7篇
  1978年   14篇
  1977年   9篇
  1976年   12篇
  1975年   10篇
  1974年   10篇
  1972年   5篇
  1971年   5篇
  1966年   3篇
排序方式: 共有770条查询结果,搜索用时 15 毫秒
131.
132.
This article has three main parts, Section 2 considers the nature and extent to which individuals who are well-off have a moral obligation to aid the world’s needy. Drawing on a pluralistic approach to morality, which includes consequentialist, virtue-based, and deontological elements, it is contended that most who are well-off should do much more than they do to aid the needy, and that they are open to serious moral criticism if they simply ignore the needy. Part one also focuses on the United States, and illustrates both how incredibly wealthy the U.S. is and some of the spending habits of its citizens; however, its considerations apply to the well-off generally. Section 3 considers whether justice provides reasons for helping the needy. Noting that justice in an extremely complex notion, it discusses numerous considerations relevant to justice’s scope and implications, including an extended Rawlsian conception of justice, an absolute conception, a comparative conception, the distinction between natural and social justice, and various elements of common-sense morality. Section 2 also distinguishes between agent-relative justice-based reasons, which are relevant to whether we act justly, and agent-neutral justice-based reasons, which are relevant to whether we have reasons of justicefor acting. Correspondingly, it argues that even if one can ignore the needy without acting unjustly, as philosophers like Robert Nozick and Jan Narveson contend, there may be powerful reasons of justicefor addressing their plight. Section 4 briefly address the responsibilities of international organizations like the World Bank, the International Monetary Fund (IMF), and World Trade Organization (WTO). Drawing on Section 2, it is suggested that in addition to standard reasons to act justlytowards needy members of the world’s community, there will be reasons of justicefor such organizations to aid the needy in both present, and future, generations. The article concludes by contending that the well-off in countries like the U.S. have reason to view international organizations like the World Bank, IMF, and WTO as their agents, and to seek to insure that they alleviate misfortunes amongst the world’s needy.  相似文献   
133.
Student’s ability to read computer text was investigated by comparing reading performance on decoding and phonetics tests of the Woodcock-Johnson (Revised) Tests of Achievement, Forms A and B. Fifty-one students completed one form of the reading tests through the traditional administration method and a second form using computer administration. Initial form and administration order were counterbalanced. Coefficients of equivalence of .91 and .86 were obtained for traditional and computer administration methods of the two tests. The results are interpreted as indicating that computer-administered reading tests can assess the same domains as traditional measures, and that they may become increasingly important in the complete assessment of functional reading skills.  相似文献   
134.
Recent studies demonstrated important differences between short- and long-term memory mechanisms. Besides, the emotional component has a crucial role in memory formation. This study was carried out to answer whether there is a differential influence of emotional arousal in short- and long-term memory in healthy adults. Thirty-one healthy volunteers were divided into two major groups. In the first group long-term memory (LTM) was evaluated, with the testing session one week after training. The second group was tested 1h after training, where short-term memory (STM) was evaluated. Each group was divided in to two subgroups. One half of the volunteers was exposed to an emotionally neutral story, and the other half of each group was exposed to a closely matched but more emotionally arousing story. The testing session consisted of a questionary containing 80 questions of multiple choices. The results were evaluated through percentage of correct answers. Results showed that correct answers were increased, in LTM measures, in the subjects that were given the emotional version of the test. In STM measures, no differences were found between the emotional and neutral version. However, the presentation of emotional story caused an emotional reaction in both groups. The lack of effect of emotional arousal in STM suggests that amygdala is not related to STM mechanisms. Further studies using different approaches are needed to elucidate if STM processes are influenced by emotional arousal.  相似文献   
135.
This paper provides a critical reflection on participatory action research (PAR) methods as they pertain to community psychology. Following a brief review of the fundamental aspects of PAR, key developments in the field are examined. These developments include the redefinition of the research enterprise among groups such as Indigenous and consumer/survivor communities, challenges that attend the “project” framing of PAR, academic and practice context challenges, and important domains in which PAR methods need to become more engaged (e.g., social media and disenfranchised youth). Three illustrative case studies of programs of work in the areas of youth homelessness, consumer/survivor engagement, and Indigenous research are provided to illustrate these contemporary challenges and opportunities in the field. The authors make the argument that without an effort to reconsider and redefine PAR, moving away from the stereotypical PAR “project” frame, these methods will continue to be poorly represented and underutilized in community psychology.  相似文献   
136.
Substance abuse commonly co-occurs with intimate partner violence among both perpetrators and survivors. Specialized courts that focus on intimate partner violence provide a unique opportunity to address both problems simultaneously, but research has yet to identify whether this happens. In this qualitative study of a domestic violence court in a large midwestern metropolitan area, key informants were interviewed to understand how the Court treats substance abuse. Results indicate that substance abuse typically is not identified among perpetrators or survivors going through the Court unless it is mentioned in a police report. Barriers to such identification are the organization of the Court, bounded definition of actors’ roles in the Court, limited resources, and negative attitudes towards survivors. These results suggest that specialized courts that attend to only one problem may overlook the possibility of addressing issues that commonly co-occur.  相似文献   
137.
The acquisition of skills by individuals with developmental disabilities typically includes the attainment of a certain mastery criterion. We conducted a survey of practitioners who indicated the most commonly used mastery criterion as 80% accuracy across three consecutive sessions. Based on these results, we conducted a series of three experiments to evaluate the relation between mastery criterion and subsequent skill maintenance with 4 individuals with various developmental disabilities. Results suggest that 80% accuracy across three consecutive sessions may be insufficient for producing maintenance in some cases.  相似文献   
138.
In Colombia, many adolescents have experienced violence related to the decades‐long armed conflict in the country and have witnessed or been directly victimized by violence in their communities, often related to gang activity or drug trafficking. Exposure to violence, both political and community violence, has detrimental implications for adolescent development. This study used data from 1857 Colombian adolescents in an urban setting. We aim to understand the relations between exposure to violence and adolescent outcomes, both externalizing behaviors and developmental competence, and then to understand whether school climate (i.e., safety, connectedness, services) moderates these relations. Results demonstrate that armed conflict, community violence victimization, and witnessing community violence are positively associated with externalizing behaviors, but only armed conflict is negatively associated with developmental competence. School safety, connectedness, and services moderate the relation between community violence witnessing and externalizing behaviors. School services moderates the relation between community violence victimization and developmental competence. As students perceived more positive school climate, the effects of community violence exposure on outcomes were weakened. This study identifies potential levers for intervention regarding how schools can better support violence‐affected youth through enhancements to school safety, connectedness, and services.  相似文献   
139.
The degree to which social norms are processed by a unitary system or dissociable systems remains debated. Much research on children’s social-cognitive judgments has supported the distinction between “moral” (harm/welfare-based) and “conventional” norms. However, the extent to which these norms are processed by dissociable neural systems remains unclear. To address this issue, 23 healthy participants were scanned with functional magnetic resonance imaging (fMRI) while they rated the wrongness of harm/welfare-based and conventional transgressions and neutral vignettes. Activation significantly greater than the neutral vignette baseline was observed in regions implicated in decision-making regions including rostral/ventral medial frontal, anterior insula and dorsomedial frontal cortices when evaluating both harm/welfare-based and social-conventional transgressions. Greater activation when rating harm/welfare-based relative to social-conventional transgressions was seen through much of ACC and bilateral inferior frontal gyrus. Greater activation was observed in superior temporal gyrus, bilateral middle temporal gyrus, left PCC, and temporal-parietal junction when rating social-conventional transgressions relative to harm/welfare-based transgressions. These data suggest that decisions regarding the wrongness of actions, irrespective of whether they involve care/harm-based or conventional transgressions, recruit regions generally implicated in affect-based decision-making. However, there is neural differentiation between harm/welfare-based and conventional transgressions. This may reflect the particular importance of processing the intent of transgressors of conventional norms and perhaps the greater emotional content or salience of harm/welfare-based transgressions.  相似文献   
140.
The current studies utilized drift diffusion modeling (DDM) to examine how reinforcement and stimulant medication affect cognitive task performance in children with ADHD. In Study 1, children with (n = 25; 88 % male) and without ADHD (n = 33; 82 % male) completed a 2-choice discrimination task at baseline (100 trials) and again a week later under alternating reinforcement and no-reinforcement contingencies (400 trials total). In Study 2, participants with ADHD (n = 29; 72 % male) completed a double-blind, placebo-controlled trial of 0.3 and 0.6 mg/kg methylphenidate and completed the same task utilized in Study 1 at baseline (100 trials). Children with ADHD accumulated information at a much slower rate than controls, as evidenced by a lower drift rate. Groups were similar in nondecision time and boundary separation. Both reinforcement and stimulant medication markedly improved drift rate in children with ADHD (ds = 0.70 and 0.95 for reinforcement and methylphenidate, respectively); both treatments also reduced boundary separation (ds = 0.70 and 0.39). Reinforcement, which emphasized speeded accuracy, reduced nondecision time (d = 0.37), whereas stimulant medication increased nondecision time (d = 0.38). These studies provide initial evidence that frontline treatments for ADHD primarily impact cognitive performance in youth with ADHD by improving the speed/efficiency of information accumulation. Treatment effects on other DDM parameters may vary between treatments or interact with task parameters (number of trials, task difficulty). DDM, in conjunction with other approaches, may be helpful in clarifying the specific cognitive processes that are disrupted in ADHD, as well as the basic mechanisms that underlie the efficacy of ADHD treatments.  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