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   29749篇
  免费   1165篇
  国内免费   13篇
  2020年   337篇
  2019年   354篇
  2018年   591篇
  2017年   592篇
  2016年   581篇
  2015年   399篇
  2014年   495篇
  2013年   2446篇
  2012年   977篇
  2011年   1028篇
  2010年   670篇
  2009年   550篇
  2008年   915篇
  2007年   794篇
  2006年   749篇
  2005年   660篇
  2004年   576篇
  2003年   578篇
  2002年   594篇
  2001年   690篇
  2000年   715篇
  1999年   541篇
  1998年   279篇
  1997年   290篇
  1996年   291篇
  1995年   273篇
  1992年   515篇
  1991年   466篇
  1990年   469篇
  1989年   440篇
  1988年   460篇
  1987年   419篇
  1986年   455篇
  1985年   438篇
  1984年   390篇
  1983年   343篇
  1979年   416篇
  1978年   333篇
  1977年   283篇
  1976年   305篇
  1975年   343篇
  1974年   437篇
  1973年   470篇
  1972年   350篇
  1971年   374篇
  1970年   340篇
  1969年   369篇
  1968年   445篇
  1967年   406篇
  1966年   423篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
851.
Grünbaum's approach to psychoanalysis suffers from several difficulties. It imposes a standard of logical reductionism and methodological purity that not only violates the nature of psychoanalytic knowledge, but imposes an invalid standard of verification and scientific confirmation. It utilizes a brand of dichotomous reasoning that forces psychoanalytic propositions into artificial positions that do not reflect the actuality of analytic practice. It imposes a standard of verification that is impossible for psychoanalysis, along with all forms of psychological knowledge, to reach. It visualizes psychoanalysis as encompassing only one form of knowledge of human psychic life, forcing it into a model that eliminates other aspects of the psychoanalytic process, so that psychoanalysis is subjected to criticism only on one dimension among several--a kind of psychoanalytic straw man. The psychoanalysis that is so impaled often is difficult for the psychoanalytic practitioner to recognize. To the extent that Grünbaum's skillful and highly informed criticism of the philosophical bases of psychoanalysis encounters these difficulties, the value of his argument falls short of providing a useful basis for advancing psychoanalytic knowledge and particularly for promoting the quest for pertinent standards of validation within psychoanalysis.  相似文献   
852.
Our research program focuses on thought systems consisting of a core event that might befall a person and other topics evoked in free associating on this event, mostly its salient antecedents and consequences. We theorize that the pattern of salient antecedents and consequences evoked by the core event are related to its judged desirability and likelihood by several adaptive principles, such that when a change is directly induced in one part of the belief system it produces predictable remote adjustments in other parts. In a first experiment we manipulated the core event's judged desirability or likelihood and tested for predicted remote effects on the salience of antecedents and consequences. A second experiment conversely manipulated the salience of antecedents or consequences and tested for predicted remote effects on the core event's judged desirability and likelihood.  相似文献   
853.
854.
855.
In this paper, we study the ability of a non-fluent aphasic patient, BN, to comprehend morphologically complex words when they appear in utterance contexts. We first establish that he is insensitive to the contextual appropriateness of both derived and inflected words. In a further experiment we show that he has no difficulty processing the stems of complex words and conclude that his problem is with the bound morphemes themselves. We then ask whether this problem is due to his inability to access either the phonological form of a morphologically complex word or its semantic and/or syntactic content. We find that only the access of semantic and syntactic content is impaired. We conclude from these six studies that: (a) BN presents a counter-example to the claim that non-fluent patients have particular difficulty with those aspects of morphology which have a syntactic function; (b) BN processes both derived and inflected words by mapping the sensory input onto the entire full-form of a complex word, but the semantic and syntactic content of the stem alone is accessed and integrated into the context. The semantic and syntactic implications of the suffix are never evaluated. This implies separate representation of the stems and suffixes of some types of morphologically complex words.  相似文献   
856.
We conducted three experiments to investigate the mental images associated with idiomatic phrases in English. Our hypothesis was that people should have strong conventional images for many idioms and that the regularity in people's knowledge of their images for idioms is due to the conceptual metaphors motivating the figurative meanings of idioms. In the first study, subjects were asked to form and describe their mental images for different idiomatic expressions. Subjects were then asked a series of detailed questions about their images regarding the causes and effects of different events within their images. We found high consistency in subjects' images of idioms with similar figurative meanings despite differences in their surface forms (e.g., spill the beans and let the cat out of the bag). Subjects' responses to detailed questions about their images also showed a high degree of similarity in their answers. Further examination of subjects' imagery protocols supports the idea that the conventional images and knowledge associated with idioms are constrained by the conceptual metaphors (e.g., the MIND IS A CONTAINER and IDEAS ARE ENTITIES) which motivate the figurative meanings of idioms. The results of two control studies showed that the conventional images associated with idioms are not solely based on their figurative meanings (Experiment 2) and that the images associated with literal phrases (e.g., spill the peas) were quite varied and unlikely to be constrained by conceptual metaphor (Experiment 3). These findings support the view that idioms are not "dead" metaphors with their meanings being arbitrarily determined. Rather, the meanings of many idioms are motivated by speakers' tacit knowledge of the conceptual metaphors underlying the meanings of these figurative phrases.  相似文献   
857.
An invisible displacement test was administered to cats in order to test the hypothesis that search behaviour in this species is influenced by their limited capacity for object permanence as well as by their previous experience with the environment. Experiment 1 compared three groups of cats in a five-choice hiding task in which the hiding places could be discriminated by their spatial positions. Two groups received a visible displacement training before the invisible displacement test and one group did not. Experiment 2 compared two groups of trained subjects in the same task, but the hiding places could be discriminated by spatial and visual cues. The results confirmed that cats are unable to solve problems with invisible displacements. The visible displacement training improved their performance, but was not sufficient to make them succeed. Experience with the hiding potential of the covers also gives more persistence to search behaviour. Finally, the distribution of search attempts is not determined by the proximity to the target and is influenced only partially by the subjects' previous experience. Like Stage 5 infants, cats rely mainly on their immediate perception. They search for an object in the last location they have seen it disappear or under the nearest cover from this location.  相似文献   
858.
Further thoughts on second-order family therapy--this time it's personal   总被引:1,自引:0,他引:1  
B J Atkinson  A W Heath 《Family process》1990,29(2):145-55; discussion 157-67
A series of articles has recently appeared in which implications of second-order cybernetics for the practice of family therapy have been discussed. In this article, we attempt to advance the discussion by addressing ideas that we think have not been adequately emphasized thus far. Specifically proposed are ideas about conditions that might facilitate the emergence of consciously pragmatic strategy informed by the kind of systemic wisdom that delicately balances natural systems without the benefit of human planning. It is argued that a shift in the personal habits of knowing and acting that typically organize individual human experience is required. After attempting to specify what this shift might involve, implications of these ideas for the practice of family therapy and for human action in general are discussed.  相似文献   
859.
A Final Comment on the Case of the Family Environment Scale   总被引:1,自引:0,他引:1  
  相似文献   
860.
Peer-group association and adolescent tobacco use   总被引:10,自引:0,他引:10  
Mosbach & Leventhal (1988) examined the relation of cigarette smoking to peer-group identification in rural Wisconsin adolescents. They found that among dirts (problem-prone youth), regulars (average youth), hot-shots (good social or academic performers), and jocks (athletes), youth most likely to smoke were dirts and hot-shots. We performed a replication with a Southern California cohort and also for use of smokeless tobacco. We hypothesized that jocks would be the main users of smokeless tobacco. We identified the same groups and an additional one, skaters (skateboarders or surfers). As Mosbach & Leventhal found, cigarettes were used most by dirts. Contrary to their results, but consistent with other research, we found that hot-shots were least likely to smoke. Contrary to our prediction, we found that skaters and dirts were more likely to use smokeless tobacco than were jocks. Our data show that both tobacco forms are used by problem-prone youth.  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