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   3640篇
  免费   217篇
  国内免费   4篇
  3861篇
  2023年   32篇
  2022年   41篇
  2021年   40篇
  2020年   73篇
  2019年   110篇
  2018年   139篇
  2017年   140篇
  2016年   142篇
  2015年   113篇
  2014年   125篇
  2013年   424篇
  2012年   233篇
  2011年   202篇
  2010年   141篇
  2009年   127篇
  2008年   151篇
  2007年   188篇
  2006年   142篇
  2005年   130篇
  2004年   140篇
  2003年   143篇
  2002年   130篇
  2001年   56篇
  2000年   58篇
  1999年   59篇
  1998年   52篇
  1997年   42篇
  1996年   38篇
  1995年   35篇
  1994年   31篇
  1993年   32篇
  1992年   23篇
  1991年   20篇
  1990年   15篇
  1989年   20篇
  1988年   18篇
  1987年   16篇
  1986年   11篇
  1985年   19篇
  1984年   16篇
  1983年   10篇
  1982年   15篇
  1981年   15篇
  1979年   10篇
  1977年   10篇
  1976年   10篇
  1975年   11篇
  1973年   10篇
  1970年   10篇
  1967年   9篇
排序方式: 共有3861条查询结果,搜索用时 15 毫秒
51.
The authors compared the career considerations of a group of Asian American college students (52 men and 72 women) with a comparison group of Caucasian students (95 men and 151 women) using an Occupations List. The results revealed that Asian American students were more likely to have considered Investigative occupations and less likely to have considered Enterprising and Conventional occupations than were the Caucasian students. There were also differences in the career considerations of the two racial groups in terms of the prestige level and gender traditionality of the occupations. The implications of the findings for theory and practice are discussed.  相似文献   
52.
53.
Over the past two decades, homographs have been used in psychological experiments aimed at testing a variety of theoretical issues concerning memory and language. Often, such research requires prior knowledge of the dominance relations among various meanings of the homographs. Previously available homograph meaning norms are limited because they are now more than 10 years old, and they have typically reported only the two most dominant meanings even though many homographs have three or more common meanings. This paper presents normative data on 120 homographs from a relatively large, heterogeneous sample of subjects (N = 100). Meaning dominance was assessed by having subjects write the first definition that came to mind for each homograph. Definition responses were grouped by similarity, and the resulting meaning categories were verified against dictionary meaning classifications. The number of distinct meanings varied from two to six for the homographs investigated, and frequency of response is reported for all definition categories.  相似文献   
54.
A running-wheel-movement-detection system is described for use with an IBM-compatible system and a serial mouse. It is an adaptation of a system developed for use on a Commodore 64. The IBM-compatible system provides obvious advantages in speed, memory, data storage, and programming ease over the earlier Commodore 64 system.  相似文献   
55.
56.
We studied the course of aggressive behavior in an epidemiologically defined sample of first graders with and without comorbid anxious symptoms. Our primary purpose in doing so was to understand whether the stability of aggression in young children was attenuated or strengthened in the presence of comorbid anxiety. Previous studies of older children and adolescents had produced equivocal findings in this regard. Data on anxious symptoms were obtained through an interview of the children, whereas aggressive behavior was assessed through the use of a teacher interview and peer nominations. Assessments were performed in the fall and spring of first grade. In contrast to children classified as aggressive alone in the fall of first grade, boys and girls classified as aggressive and anxious in the fall of first grade were significantly more likely to be classified as aggressive in the spring in terms of teacher ratings and/or peer nominations of aggression. Thus our findings suggest that the link between early and later aggression may be strengthened in the presence of comorbid anxious symptoms, rather than attenuated. Future studies are needed to identify the mechanisms by which the course of aggression is influenced by the presence of comorbid anxiety.The writing of this paper was supported by the following National Institute of Mental Health grants: Epidemiologic Prevention Center for Early Risk Behavior (P50 MH38725); Periodic Outcome of Two Preventive Trials (1RO1 MH42968). The authors would like to thank the Baltimore Public City School System and the children and parents who participated in this study.  相似文献   
57.
A 15-year-old-boy was referred on account of a fluency disorder that was not thought to be stuttering. The problems of the lack of an adequate definition of cluttering are discussed along with the inherent problems of providing a wide-based assessment of this client group. Assessments were conducted on the motoric, linguistic, and intellectual abilities of this client, and the findings are discussed.  相似文献   
58.
This study tested predictions concerning the associations between children's nonparental care experiences and emotion regulation. It involved 53 participants (21 girls and 32 boys) of preschool age and their mothers. The children's care experiences ranged from those who were raised exclusively at home to those who had nonparental care experience beginning in early infancy. The participants were observed in a laboratory playroom, and their mothers were asked to complete questionnaires regarding their children's care histories and their current care situations. The children with extensive nonparental care backgrounds were found to be more likely to use self-directed emotion regulation behaviors when faced with a mildly frustrating situation. In the same situation, the children who had experienced minimal nonparental care were found to be more likely to use other-directed emotion regulation behaviors. Additionally, the children who had experienced care settings with large numbers of children in each care group or who had experienced many caregiver changes were more likely to use self-directed emotion regulation behaviors, whereas those who had experienced settings with smaller care groups and fewer caregiver changes were more likely to use other-directed emotion regulation behaviors.  相似文献   
59.
Clinical psychologists' and nonpsychiatric physicians' attitudes and behaviors in sexual and confidentiality boundary violations were examined. The 171 participants' responses were analyzed by profession, sex, and status (student, resident, professional) on semantic differential, boundary violation vignettes, and a version of Pope, Tabachnick, and Keith-Spiegel's (1987) ethical scale. Psychologists rated sexual boundary violation as more unethical than did physicians (p less than .001). Rationale (p less than .01) and timing (p less than .0001) influenced ratings. Psychologists reported fewer sexualized behaviors than physicians (p less than .05). Professional experience (p less than .01) and sex (p less than .05) were associated with confidence-violating behavior. Overall, 78% of the sample reported attitudes or behaviors associated with boundary violations. The behavior violations were correlated (r = .49). Actual violators rated vignette violators more leniently than did nonviolators (p less than .01).  相似文献   
60.
Introduction and overview: Global information ethics   总被引:2,自引:0,他引:2  
This is an introduction to a set of papers on Computer Ethics from the conference ETHICOMP95. Taken as a whole, the collection of papers provides arguments and concepts to launch a new development in computer ethics: ‘Global Information Ethics’. A rationale for globalization is provided, as well as some early efforts which move in that direction. ETHICOMP95, an international conference on Computer Ethics, was held 28–30 March 1995 at De Montfort University, Leicester, UK. Co-directors were Terrell Ward Bynum and Simon Rogerson.  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