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   6659篇
  免费   395篇
  国内免费   2篇
  7056篇
  2021年   59篇
  2020年   114篇
  2019年   136篇
  2018年   178篇
  2017年   224篇
  2016年   223篇
  2015年   167篇
  2014年   195篇
  2013年   784篇
  2012年   308篇
  2011年   336篇
  2010年   204篇
  2009年   219篇
  2008年   269篇
  2007年   293篇
  2006年   241篇
  2005年   242篇
  2004年   237篇
  2003年   205篇
  2002年   220篇
  2001年   111篇
  2000年   118篇
  1999年   111篇
  1998年   96篇
  1997年   92篇
  1996年   99篇
  1995年   89篇
  1994年   84篇
  1993年   66篇
  1992年   86篇
  1991年   65篇
  1990年   55篇
  1989年   51篇
  1988年   51篇
  1987年   44篇
  1986年   49篇
  1985年   65篇
  1984年   60篇
  1983年   50篇
  1982年   73篇
  1981年   72篇
  1980年   52篇
  1979年   52篇
  1978年   47篇
  1977年   68篇
  1976年   41篇
  1975年   49篇
  1974年   38篇
  1973年   45篇
  1972年   36篇
排序方式: 共有7056条查询结果,搜索用时 15 毫秒
931.
932.
Subjects judged the disutility of health conditions (e.g. blindness) using one of them (e.g. blindness+deafness) as a standard, using three elicitation methods: analog scale (AS, how bad is blindness compared to blindness+deafness?); magnitude estimation (ME, blindness+deafness is how many times as bad as blindness?); and person trade‐off (PTO, how many people cured of blindness is as good as 10 people cured of blindness+deafness?). ME disutilities of the less bad condition were smallest, and AS was highest. Interleaving PTO with ME made PTO more like ME. AS disutilities were inconsistent with direct judgments of differences between pairs of conditions. ME and PTO judgments were internally inconsistent: e.g. the disutility of one‐eye‐blindness relative to blindness+deafness was larger than predicted from comparison of each to blindness. Consistency training reduced inconsistency, increased agreement between AS and PTO, and transferred from one method to the other. The results support the use of consistency checks in utility elicitation. Copyright © 2001 John Wiley & Sons, Ltd.  相似文献   
933.
Expectancy‐based illusory correlations have been observed in numerous experiments. Simulations using the connectionist computer model BIAS (Fiedler, 1996 ) show that such illusory correlations may not always reflect expectancy biases but influences of similarity via cue‐overlap. Cue‐overlap means that some of the probabilistic cues that indicate the presence of one variable are also indicative of another variable. In an experiment, participants learned two novel concepts pertaining to a fictitious painter and a fictitious artistic style in separate runs. Both concepts were defined by multiple probabilistic cues observable in paintings. For half the participants, the cue systems underlying the perception of the two concepts overlapped, whereas for the other half they did not. In addition, we manipulated whether or not participants expected a positive contingency between artist and artistic style. In the second part of the experiment, a series of paintings was presented that constituted an objective zero correlation between artist and artistic style. Participants' subsequent contingency judgments were assessed by direct and indirect measures. Data analyses revealed main effects for expectancy induction and cue‐overlap but no interaction on the direct measure and nearly identical results on the indirect measure. Thus, cue‐overlap and expectancy induction independently triggered the development of illusory correlations. Copyright © 2000 John Wiley & Sons, Ltd.  相似文献   
934.
935.
936.
The aim of this paper is to evaluate the case for preventive interventions in infancy aimed at the reduction of childhood psychopathology. The paper considers the terminology of prevention and the case for prevention in infancy. It is argued that increased knowledge concerning the developmental pathways involved in many psychological disorders opens the door to prevention initiatives. An overview of recent prevention trials is provided and the implications from treatment evaluation studies are explored. The case for prevention of conduct disorders is taken as an illustration of the potential for interventions in infancy. A developmental model of conduct disorder implicates a vicious cycle of parent–child interactions, a process that may arguably be preempted by early intervention. Three modalities are considered in detail: (a) early parent training; (b) the enhancement of attachment security; and (c) the facilitation of the development of reflective function. Studies in each of these areas are reviewed. The paper concludes that increased emphasis on the prevention aspect of infant mental health interventions is justified and desirable. © 1998 Michigan Association for Infant Mental Health  相似文献   
937.
938.
The advantages of assessing self‐perceived deviations of mood states from mood traits in cross‐sectional as well as longitudinal studies are discussed in detail. The validity of self‐perceived mood deviations is analysed in a longitudinal study with three occasions of measurement and 176 participants. In order to assess self‐perceived mood deviations, participants rated the deviation of their momentary mood from how they felt in general with respect to 32 mood adjectives belonging to three mood scales (pleasant–unpleasant, calm–restless, awake–sleepy). Furthermore, mood states, mood traits, and other personality variables (hedonic level, neuroticism, extraversion, openness, agreeableness, conscientiousness) are assessed by self‐report. Using models of latent state–trait theory, it is shown that the self‐perceived mood deviation scales are reliable (reliabilities between 0.73 and 0.95) and sensitive to occasion‐specific fluctuations (occasion specificities between 0.38 and 0.72). The self‐perceived deviation scales show high correlations with latent occasion‐specific deviation variables defined on the basis of repeatedly measured mood states (high convergent validity). In contrast to self‐reported mood states, however, self‐perceived mood deviations show much smaller and in most cases non‐significant correlations with personality variables (high discriminant validity). Furthermore, it is shown that self‐perceived mood deviations can be used to suppress stable situation‐specific variance in mood traits defined as aggregated states. Therefore, it can be demonstrated that including self‐perceived mood deviations in analyses on mood–personality associations enhances the association coefficients considerably. Finally, the implications of the results for the individual assessment of mood deviations, as well as for studies on affect and personality, are discussed. Copyright © 1999 John Wiley & Sons, Ltd.  相似文献   
939.
Von der Substanz     
Ohne ZusammenfassungEin unveröffentlichter Text (Nachlaß-Paginierung: 30604 – 30620) Herausgegeben und eingeleitet von Wilhelm BaumgartnerWahrscheinlich Palermo, März 1900; zur Datierung vgl. die inhaltliche Übereinstimmung mit dem Brief an A. Marty vom 28.3.1900 im Anhang.Emilie grüsst.Emilie Brentano. Der Briefwechsel Brentano-Marty wird z.Z. bei der Franz Brentano Forschung an der Universität Würzburg von W. Baumgartner für eine kritische Edition bearbeitet.  相似文献   
940.
Issues recognized as having ethical or moral components are becoming increasingly common, for society in general, the health care system and for general practitioner/family physicians in particular. Some of the peculiar problems for GP's relate to the provision of continuing, comprehensive, primary medical care to large numbers of individuals who provide extensive potential for conflict between all the involved elements: patients, physicians, families, consultants and societal attitudes. There is a need for more formal education programs.  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