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   7262篇
  免费   306篇
  国内免费   2篇
  2021年   87篇
  2020年   139篇
  2019年   114篇
  2018年   181篇
  2017年   170篇
  2016年   212篇
  2015年   160篇
  2014年   197篇
  2013年   698篇
  2012年   344篇
  2011年   347篇
  2010年   218篇
  2009年   209篇
  2008年   299篇
  2007年   319篇
  2006年   256篇
  2005年   280篇
  2004年   262篇
  2003年   242篇
  2002年   246篇
  2001年   125篇
  2000年   86篇
  1999年   117篇
  1998年   107篇
  1997年   108篇
  1996年   92篇
  1995年   81篇
  1994年   76篇
  1993年   84篇
  1992年   91篇
  1991年   84篇
  1990年   70篇
  1989年   50篇
  1988年   51篇
  1987年   58篇
  1986年   60篇
  1985年   74篇
  1984年   67篇
  1983年   72篇
  1982年   63篇
  1981年   76篇
  1980年   68篇
  1979年   68篇
  1978年   70篇
  1977年   73篇
  1976年   65篇
  1975年   55篇
  1974年   60篇
  1968年   43篇
  1966年   44篇
排序方式: 共有7570条查询结果,搜索用时 15 毫秒
881.
There has been little theorizing or empirical research on satisfaction among African American women at midlife. This study addresses this gap by examining predictors of satisfaction in 3 cohorts (N = 202) of midlife college-educated African American women. Specifically, 3 domains of satisfaction were examined: overall life satisfaction, personal satisfaction, and work satisfaction. Results revealed that the women were highly satisfied with their work situation, their personal life, and generally with how their life had turned out so far. Overall life satisfaction was predicted by the women's perceptions of personal control, role quality, household burden, and their cohort status. Work satisfaction was best predicted by the women's sense of personal control and role quality. Lastly, household burden and physical well-being emerged as significant predictors of personal satisfaction. Implications of the findings and recommendations for future research are offered.  相似文献   
882.
This paper explores the types and strength of transnational ties between Ghanaian immigrants in Canada and their country of origin. The study finds that Ghanaians maintain various types of ties to Ghana including communication by telephone, repeat migration, cultural activities, and investments, especially in home ownership. The desire for home ownership in Ghana is related to the immigrants' intentions to return there permanently in the future. The immigrants also maintain collective ties to the homeland through a network of ethnic associations in Canada. These associations provide financial support for local economic development in Ghana. They also provide an organizational structure through which the immigrants seek to address their political needs in Ghana.  相似文献   
883.
This essay examines the role of the University of Bridgeport's Faculty Council in relation to the faculty union. The Faculty Council is a governing body composed of elected faculty representatives from different schools and departments within the university. Faculty Council leaders facilitated the certification of AAUP as the faculty's bargaining agent in 1973 and, under the author's leadership, the faculty petitioned the National Labor Relations Board to decertify the union in 1991. The author participated on the picket line during the 1975, 1978 and 1987 faculty strikes, but crossed the picket line during the 1990 strike.  相似文献   
884.
The causes of and contributors to negative emotions have been areas of interest in psychology for decades. Recent work has shown a variety of negative emotions, including anger and depression, to be related. The present study investigated the effects of power, attributional style, and gender on anger and depression using a series of narrative mood inductions presented to 120 undergraduates. Results indicated that participants in the external attribution and low power conditions demonstrated significantly higher levels of postinduction anger than those in other conditions. In addition, the influence of internal attributions on postinduction depression scores approached significance. The effectiveness of the study's mood induction methodology is discussed and suggestions are made for future research.  相似文献   
885.
This contribution provides recommendations and guidelines for the development of a Web site for psychotherapists, whereby the conception of the presentation predominates. In comparison, practical realisation and care of the site require only a relatively small effort. The way to a Web appearance is presented in seven steps. In addition, the way to deal with (unwanted) e-mail will be considered. The article is centered on clarity and practice orientation.  相似文献   
886.
This paper reviews recent findings from our laboratories concerning metabolic and immune mediators of behavioral depression in rats. Specifically, a single injection of 6 mg/kg of reserpine substantially increases behavioral depression, as evidenced by an increase in the amount of time spent floating by independent groups of rats tested for swim performance at various times during the next week. The behavioral impairment consists of two components. An early component emerges one hour after reserpine treatment and persists for about 24 hours. The deficit is not reversed by intracranial ventricular infusion of the receptor antagonist for interleukin-1beta (IL-1beta). A second, late-component deficit appears approximately 48 hours after reserpine treatment and recovers within a week. Late-component depression is reversed by central infusion of the IL-1beta receptor antagonist, and is mimicked by central infusion of the proinflammatory cytokine. Importantly, both early and late components of reserpine-induced depression and IL-1beta induced depression are reversed by a systemic injection of the highly selective A2A adenosine receptor antagonist 8-(3-Chlorostyryl) caffeine. These data are discussed in terms of the overlap in the conservation-withdrawal reaction during sickness, traumatic stress, and major depression and the regional contribution of purines and cytokines to the organization of this reaction in the brain.  相似文献   
887.
888.
Decision-makers are often faced with inter-temporal choices in which they are required to choose between options that differ in both value of and delay to outcomes. In this study, assumptions of Discounted Utility Theory (DU) were tested within inter-temporal career choices. According to DU, the same discount rate should be applied regardless of the amount of delay and magnitude of the outcome. In addition, DU predicts that, for economic substitutes, the same discount rate should be applied to both commodities. Contrary to assumptions of DU, but consistent with a hyperbolic discounting model, graduating college students’ job choices reflected non-constant discount rates (i.e., Delay Effect) for future salary and preferred tasks. In addition, these students exhibited lower discount rates for salary and percentage of preferred tasks (i.e., Magnitude Effect). Finally, the two were not found to be economic substitutes as there was a low correlation between discount rate for salary and percentage of preferred tasks (i.e., Domain Independence). Implications for employee recruitment and human resource management are discussed.  相似文献   
889.
890.
Suicide research is vitally important, yet—like psychology research more broadly—faces methodological challenges. In recent years, researchers have raised concerns about standard practices in psychological research, concerns that apply to suicide research and raise questions about its robustness and validity. In the present paper, we review these concerns and the corresponding solutions put forth by the “open science” community. These include using open science platforms, pre‐registering studies, ensuring reproducible analyses, using high‐powered studies, ensuring open access to research materials and products, and conducting replication studies. We build upon existing guides, address specific obstacles faced by suicide researchers, and offer a clear set of recommended practices for suicide researchers. In particular, we consider challenges that suicide researchers may face in seeking to adopt “open science” practices (e.g., prioritizing large samples) and suggest possible strategies that the field may use in order to ensure robust and transparent research, despite these challenges.  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