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   181813篇
  免费   8050篇
  国内免费   162篇
  2020年   2771篇
  2019年   3435篇
  2018年   3679篇
  2017年   4093篇
  2016年   4709篇
  2015年   3911篇
  2014年   4778篇
  2013年   23411篇
  2012年   4975篇
  2011年   4206篇
  2010年   4034篇
  2009年   4860篇
  2008年   4376篇
  2007年   3974篇
  2006年   4387篇
  2005年   4328篇
  2004年   3831篇
  2003年   3424篇
  2002年   3267篇
  2001年   3799篇
  2000年   3594篇
  1999年   3448篇
  1998年   2882篇
  1997年   2689篇
  1996年   2594篇
  1995年   2444篇
  1994年   2407篇
  1993年   2357篇
  1992年   2811篇
  1991年   2664篇
  1990年   2515篇
  1989年   2404篇
  1988年   2365篇
  1987年   2359篇
  1986年   2353篇
  1985年   2587篇
  1984年   2591篇
  1983年   2370篇
  1982年   2411篇
  1981年   2355篇
  1980年   2215篇
  1979年   2304篇
  1978年   2224篇
  1977年   2174篇
  1976年   1987篇
  1975年   2101篇
  1974年   2145篇
  1973年   2001篇
  1972年   1618篇
  1971年   1547篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
This study examined the effect of demographic variables and intellectual factors on the Short-term Memory Test. Subjects were 20 patients neurologically diagnosed as brain-damaged. There was only one significant correlation between Verbal IQ and the Short-term Memory Test. Demographic variables of age, education, and sex did not correlate significantly with scores of the Short-term Memory Test.  相似文献   
972.
The scores of 15 adolescents who had a primary diagnosis of Posttraumatic Stress Disorder, 21 of Conduct Disorder, and 23 control subjects on the Beck and Reynolds depression scales were correlated .58 over-all, .73 for the Posttraumatic group, .48 for the Conduct Disordered group, but .37 for controls. The Reynolds scale did not identify depression in these adolescents as effectively as did the Beck scale.  相似文献   
973.
This is the third part of a review and commentary on the psychoanalytic literature on phobias. This section takes up agoraphobia and other phobias of adults, and suggests further avenues for interpenetration of psychoanalytic and psychiatric approaches.  相似文献   
974.
This article examined the relationship between impulsiveness and attitudes toward institutional authority among Australian secondary school students. Reliable questionnaire measures of these constructs were completed by 48 boys and 57 girls, about 14 years of age. Correlations between impulsiveness and attitude to authority differed between the sexes, with a significant negative correlation of -.43 being obtained for boys only.  相似文献   
975.
Analyses of responses from a clinical sample of 120 patients (primarily schizophrenics) and from 158 college students to the Cognitive Slippage Scale, a scale designed by Miers and Raulin to identify speech deficits and confused thinking in schizophrenic and schizotypal personality disorders showed high internal reliability; Cronbach's coefficients alpha were .89 and .86 in the clinical and college student samples, respectively. The mean scale scores significantly differentiated the two samples. Also, change scores over 4 wk. showed adequate stability for both samples. Item analysis indicated Items 11, 20, 21, and 28 may not reliably discriminate between schizophrenic and college student samples. Over-all, these preliminary results are consistent with the reliability and validity of the scale.  相似文献   
976.
Psychological compensation: a theoretical framework.   总被引:1,自引:0,他引:1  
The 2 main objectives of this article are to review a variety of literatures in which the concept of compensation is used and to integrate the results of this review into a general framework of compensation. The review focuses on 4 domains of psychological inquiry: compensation for sensory handicaps, cognitive deficits, interpersonal losses, and brain injury. In the proposed framework, underlying dimensions and 4 basic steps in the progression of compensatory behavior are distinguished. The latter include origins, mechanisms, forms, and consequences. Finally, we describe ways in which researchers in particular domains can benefit from the global, process-oriented framework we propose. For most of the areas of compensation research reviewed, investigators can profit from a consideration of a broader selection of dimensions, additional steps in the process, alternative outcomes, and both objective and subjective assessment procedures.  相似文献   
977.
978.
In this paper we study the acquisition of German noun plurals in relation to the question of how children represent regular and irregular inflection. Pinker and Prince (1992) have demonstrated several dissociations between regular and irregular inflection in the English past tense system. However, in English, the default status of -ed is confounded with its high frequency; therefore inflectional systems other than English past tense formation must be examined. The noun plural system in German is particularly interesting, because most nouns have irregular plurals in German and the regular (default) plural is less frequent than several of the irregular plurals. Thus it is unclear how a language learner determines whether German even has a regular plural, and if so what form it takes. Based on longitudinal data from impaired and unimpaired monolingual German-speaking children, we find a striking, statistically significant correlation: plural affixes that are used in overregularizations, namely -n or -s, are left out within compounds. This correlation shows that even impaired children are sensitive to the distinction between regular and irregular morphology. We propose a linguistic analysis of the correlation in terms of Kiparsky's (1982, 1985) level-ordering model plus an additional ordering condition on affixes: default (regular) affixes cannot serve as input to compounding processes.  相似文献   
979.
A spreading-activation theory of lemma retrieval in speaking.   总被引:14,自引:0,他引:14  
A Roelofs 《Cognition》1992,42(1-3):107-142
This paper presents a spreading-activation theory of conceptually driven lemma retrieval--the first stage of lexical access in speaking, where lexical items specified with respect to meaning and syntactic properties are activated and selected. The mental lexicon is conceived of as a network consisting of concept, lemma, and word-form nodes and labelled links, with each lexical concept represented as an independent node. A lemma is retrieved by enhancing the activation level of the node representing the to-be-verbalized concept. This activation then spreads towards the lemma level, and the highest activated lemma node is selected. The theory resolves questions such as the hypernym problem (Levelt, 1989). Furthermore, a computer model that implements the theory is shown to be able to account for many basic findings on the time course of object naming, object categorization, and word categorization in the picture-word interference paradigm. In addition, non-trivial predictions regarding the time course of semantic facilitation for hypernyms, hyponyms, and cohyponyms are experimentally tested, and shown to be valid.  相似文献   
980.
At the present, it is unknown how restraint and binge eating/counterregulation are exactly related. Earlier studies on this relationship suffer from two main shortcomings: the studies are all correlational in nature or could not rule out the contribution of confounding variables such as weight loss. The present study investigated whether a break of restraint is a sufficient condition for the occurrence of counterregulation by studying a restrained sample which is not liable to dieting practices and weight loss. The externally imposed restraint on children with regard to eating sweets was broken. However, after breaking their external restraint the children did not counterregulate. It is discussed whether restraint of food intake is really as important for binge eating as it is claimed to be or whether it is merely a consequence or an epiphenomenon of binge eating.  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