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   1997篇
  免费   72篇
  2069篇
  2022年   12篇
  2020年   34篇
  2019年   33篇
  2018年   41篇
  2017年   49篇
  2016年   64篇
  2015年   50篇
  2014年   44篇
  2013年   241篇
  2012年   89篇
  2011年   108篇
  2010年   42篇
  2009年   54篇
  2008年   73篇
  2007年   67篇
  2006年   75篇
  2005年   51篇
  2004年   62篇
  2003年   54篇
  2002年   65篇
  2001年   35篇
  2000年   26篇
  1999年   28篇
  1998年   28篇
  1997年   29篇
  1996年   32篇
  1995年   26篇
  1994年   26篇
  1993年   35篇
  1992年   20篇
  1991年   37篇
  1990年   24篇
  1989年   21篇
  1988年   25篇
  1987年   20篇
  1986年   29篇
  1985年   27篇
  1984年   21篇
  1983年   30篇
  1982年   24篇
  1981年   28篇
  1980年   17篇
  1979年   15篇
  1978年   20篇
  1977年   22篇
  1976年   15篇
  1975年   10篇
  1974年   13篇
  1973年   14篇
  1967年   9篇
排序方式: 共有2069条查询结果,搜索用时 15 毫秒
31.
In November 1990 the National Institute of Mental Health (NIMH) convened a special conference of over 100 scientists and leaders to outline specific strategies and research initiatives that should be developed to implement the recently released National Plan for Research on Child and Adolescent Mental Disorders.Participants included journal editors, educators from psychology and psychiatry, representatives from private foundations, and leaders of research program areas in public funding agencies. Critical knowledge gaps were identified in five areas of child and adolescent psychopathology, including depression, attention deficit hyperactivity disorder, conduct disorder, the anxiety disorders, and the developmental disorders. For each of these areas, special emphasis was placed on developing new ideas and obtaining critical input from other areas of investigation. This report summarizes the identified research gaps and recommends research initiatives to implement the National Plan, as outlined by the conference participants.  相似文献   
32.
Clerical people, returning to secular life, may undergo shifts in self-experience, including alterations in internal object relations. Self-psychology, positing the importance to health of cohesion of all aspects of self, provides a theoretical model for exploring such shifts and their facilitation through psychoanalytic psychotherapy. A case of a released Roman Catholic priest is discussed to illustrate dynamic processes. Emphasis is on a clinical approach that does not require conversion of religious and spiritual self-experience into drive derivative formulations  相似文献   
33.
Saccadic reaction times of dyslexic and age-matched normal subjects   总被引:2,自引:0,他引:2  
B Fischer  H Weber 《Perception》1990,19(6):805-818
Saccadic reaction times (SRT) were measured in a simple task: subjects had to make saccades from a central fixation point to peripheral targets, which appeared randomly 4 deg to the left or to the right. In the first test the fixation point went off before the target appeared (gap trials); in the second test it remained on the screen (overlap trials). The distribution of SRTs for trained normal adults (N = 4), untrained normal adults (N = 11), untrained normal children (aged 9-11 years, N = 9), untrained normal teenagers (aged 15-17 years, N = 8), dyslexic children (aged 9-11 years, N = 15), and dyslexic teenagers (aged 15-17 years, N = 5) were compared, with special emphasis on the number of express saccades, ie saccades with extremely short reaction times (100-120 ms, under the present conditions). In normal adults with the gap paradigm, the distribution of reaction times typically exhibits two or three modes (express saccades, fast regular saccades, and very few slow regular saccades), whereas in the overlap paradigm only one or two modes (few fast regular saccades and many slow regular saccades) are obtained. On average, normal children produce more express saccades than naive normal adults. Dyslexic children produce more express saccades than the normal age-matched controls. Among the dyslexic children, four different types of abnormalities in their reaction times were encountered. The group of dyslexic teenagers was characterized by a larger number of express saccades at the expense of fast regular saccades in gap trials and by fewer express saccades and fewer fast regular saccades in overlap trials when compared to the age-matched control group. It is concluded that the abnormal patterns of saccadic reaction times reflect defects in the system of visual attention and/or in its control over the oculomotor system, rather than indicating a defect in the oculomotor system itself. In this context, symptoms of dyslexia appear as a combination of attentional deficits and irregular timing of saccadic eye movements.  相似文献   
34.
An exploratory study of the values of inner-city postpartum women was conducted. Subjects were largely single, with many on/or going on public assistance. Each subject was given the Rokeach Value Scale and asked to prioritize the terminal values (goals) in terms of herself and the instrumental values (means) in terms of what she would like to teach her child. Rankings were compared to corresponding rankings compiled by a national sample, considered a more traditional era, and by marital status within the postpartum mother sample itself. Economic values were ranked higher by inner-city mothers than by the national sample. The top terminal value was family security and the top instrumental value was responsible. When compared by marital status, the only significant difference was the higher ranking of mature love given by married women. Results suggests that the values of the inner-city single postpartum mother can be conceptualized as a mosaic incorporating values shared with the mainstream and values adapted to the conditions of poverty.  相似文献   
35.
In one view of implicit memory, priming arises from modification of preexisting representations; however, the role of such representations is currently in doubt following findings of implicit memory for newly formed associations. Closer consideration of studies reporting this effect, and of others that have failed to obtain it, suggests that such priming might result from the employment of explicit memory strategies. With measures designed to permit exclusion of such strategies, three experiments using lexical decision and stem-completion tasks found no evidence of truly implicit memory for unrelated pairs. Instead, priming was found only in those subjects (50% of the total in one experiment) who reported using explicit memory in stem completion. Contrary to previous conclusions, the results indicate a role for established representations in explaining implicit memory.  相似文献   
36.
ABSTRACT Participants performed a cognitive task under evaluative, self-awareness, and neutral conditions, Task performance was determined jointly by trait test anxiety and situational factors. Test anxiety led to poorer performance in both evaluative and self-awareness situations, relative to the neutral situation. We examined the cognitive activity variables that might mediate the effects of test anxiety and situational variables on performance, and identified a significant cognitive mediator of the main effect of test anxiety, but not for the Test Anxiety x Situation interaction effect. Therefore, the current experiment offered some support for Sarason's (1980) cognitive interference theory, as well as integrating test anxiety and self-awareness research.  相似文献   
37.
The paper addresses three neglected questions from IRT. In section 1, the properties of the “measurement” of ability or trait parameters and item difficulty parameters in the Rasch model are discussed. It is shown that the solution to this problem is rather complex and depends both on general assumptions about properties of the item response functions and on assumptions about the available item universe. Section 2 deals with the measurement of individual change or “modifiability” based on a Rasch test. A conditional likelihood approach is presented that yields (a) an ML estimator of modifiability for given item parameters, (b) allows one to test hypotheses about change by means of a Clopper-Pearson confidence interval for the modifiability parameter, or (c) to estimate modifiability jointly with the item parameters. Uniqueness results for all three methods are also presented. In section 3, the Mantel-Haenszel method for detecting DIF is discussed under a novel perspective: What is the most general framework within which the Mantel-Haenszel method correctly detects DIF of a studied item? The answer is that this is a 2PL model where, however, all discrimination parameters are known and the studied item has the same discrimination in both populations. Since these requirements would hardly be satisfied in practical applications, the case of constant discrimination parameters, that is, the Rasch model, is the only realistic framework. A simple Pearsonx 2 test for DIF of one studied item is proposed as an alternative to the Mantel-Haenszel test; moreover, this test is generalized to the case of two items simultaneously studied for DIF.  相似文献   
38.
39.
Alcohol was used widely by a representative sample of managers in the private business sector. Manager's perceptions of the roles and the symbolic functions played by alcohol are reported. The inclusion of the roles and symbolic functions in change strategies are advocated.This study was funded by the Alcoholic Liquor Advisory Council of New Zealand. The author would like to acknowledge the work of Ruth Houghton and Prue Toft in conducting the original study.  相似文献   
40.
Supported by a review of relevant literature and a case study, the author argues that family therapy intervention enhances the likelihood of a female alcoholic's positive prognosis. With a basis in systems theory, family therapy views the family as a system and, hence, perceives the alcoholism as a symptom of that family. A profile of the female alcoholic, how her drinking affects her family, and the role that family therapy plays in the recovery process are examined.  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