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   174483篇
  免费   7952篇
  国内免费   157篇
  2021年   1514篇
  2020年   2810篇
  2019年   3465篇
  2018年   3573篇
  2017年   4010篇
  2016年   4690篇
  2015年   3966篇
  2014年   4842篇
  2013年   23636篇
  2012年   4648篇
  2011年   3776篇
  2010年   3942篇
  2009年   4826篇
  2008年   3973篇
  2007年   3535篇
  2006年   4125篇
  2005年   4054篇
  2004年   3563篇
  2003年   3220篇
  2002年   3012篇
  2001年   3316篇
  2000年   3219篇
  1999年   3206篇
  1998年   2864篇
  1997年   2690篇
  1996年   2600篇
  1995年   2435篇
  1994年   2388篇
  1993年   2349篇
  1992年   2632篇
  1991年   2466篇
  1990年   2333篇
  1989年   2224篇
  1988年   2184篇
  1987年   2199篇
  1986年   2191篇
  1985年   2462篇
  1984年   2537篇
  1983年   2327篇
  1982年   2361篇
  1981年   2353篇
  1980年   2195篇
  1979年   2214篇
  1978年   2192篇
  1977年   2157篇
  1976年   1947篇
  1975年   2038篇
  1974年   2089篇
  1973年   1945篇
  1972年   1518篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Pastors' children have been thought to have more behavioral problems than other children since they face high expectations and are part of families that are often under public scrutiny. The purpose of this study was to describe the social competencies and behavioral problems of a national sample of pastors' children, aged 4–16, and to compare them to age and sex standardized norms. Data were obtained on 98 children from a random sample of 62 families, using the Child Behavior Checklist. Results indicate that scores for both boys and girls at each age grouping fell within the acceptable norms for both social competencies and behavioral problems.  相似文献   
992.
This paper presents some results of an in-depth interview study on the celibate experience of Roman Catholic priests. Twenty-four parish priests who were able and willing to talk about their celibacy were interviewed in five- to six-hour-long sessions. The purpose of the study was to gain more insight into the psychodynamics of being obliged to live a celibate life. Three varieties of celibate experience that we discovered in our research population will be presented. Also the problematic relationship between celibacy and mental health will be discussed.This research was partly supported by the Dutch Centre for Studies in Mental Health (KSGV).  相似文献   
993.
Our discussion begins with a consideration of the various types of religion and of guilt. Both religion and morality function in different ways from individual to individual. All these factors need to be taken into account before we can turn to treatment for the painful experience of guilt and bring about an improved self-esteem.  相似文献   
994.
995.
A computational processing behavior-dynamic model was instantiated in the form of a computer program that "behaved" on the task developed by Nevin (1969). In this classic discrete-trials experiment, the relative frequency of choosing a response alternative matched the relative frequency of reinforcement for that alternative, the local structure of responding was opposite that predicted by momentary maximizing (i.e., the probability of a changeover decreased with run length), and absolute and relative response rates varied independently. The behavior-dynamic model developed here qualitatively reproduced these three results (but not in quantitative and specific detail) and also generated some interesting, as-yet-untested predictions about performance in Nevin's task. The model was discussed as an example of a stochastic behavior-dynamic alternative to algebraic behavior theory.  相似文献   
996.
A capacity theory of comprehension: individual differences in working memory.   总被引:77,自引:0,他引:77  
A theory of the way working memory capacity constrains comprehension is proposed. The theory proposes that both processing and storage are mediated by activation and that the total amount of activation available in working memory varies among individuals. Individual differences in working memory capacity for language can account for qualitative and quantitative differences among college-age adults in several aspects of language comprehension. One aspect is syntactic modularity: The larger capacity of some individuals permits interaction among syntactic and pragmatic information, so that their syntactic processes are not informationally encapsulated. Another aspect is syntactic ambiguity: The larger capacity of some individuals permits them to maintain multiple interpretations. The theory is instantiated as a production system model in which the amount of activation available to the model affects how it adapts to the transient computational and storage demands that occur in comprehension.  相似文献   
997.

The effects of varying decision outcome dispersion on organizational decision making were investigated under individual and group decision making conditions. Thirty-six female and pg]36 male subjects made decisions for organizational decision scenarios in which outcomes affected primarily the decision maker, people other than the decision maker, or a group of which the decision maker was a member. Subjects rated their levels of perceived risk and confidence in their decisions and made decisions within a simulated context of either a small or a large organization. Results indicated that subjects perceived significantly less risk and more confidence in their decisions when outcomes affected primarily themselves rather than others regardless of whether the decisions were made individually or by a group. Males perceived their decisions as significantly more risky than females. Induced organizational size did not significantly influence decision making.

  相似文献   
998.
The validity of the Threat Index was examined in a study of 42 students and 15 HIV+ clients. When completing the Threat Index, subjects rate the self and death on 30 bipolar adjectives. A count is made of the number of times the same adjective poles are used to describe the self and death. Uses of the same poles are called matches, while uses of different poles are called splits. The Threat Index is based on the assumption that splits indicate threat. Analysis showed that neither splits nor matches were usually threatening and that neither was necessary or sufficient for the experience of threat. These results did not support the validity of the Threat Index.  相似文献   
999.
The purposes of this study were to assess the career development needs of entering medical students as measured by the Medical Career Development Inventory and to examine gender differences in responses to the inventory. A total of 115 entering medical students (representing two entering classes) took the inventory two months prior to matriculation. Analysis suggested that this sample of entering students had formed a vocational identity and that they had evaluated the suitability and viability of a commitment to a physician's career. However, the participants had not formed a clear picture of their specialty interest and goals. No significant gender differences were indicated. A recommended career assistance workshop is presented as appropriate for these students' needs.  相似文献   
1000.
Two cases of Gilles de la Tourette syndrome from India are presented. The symptomatology of Tourette syndrome is the same as that documented in western populations which suggests biological factors in the aetiology of the syndrome.  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