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   4484篇
  免费   224篇
  2022年   34篇
  2021年   53篇
  2020年   80篇
  2019年   90篇
  2018年   115篇
  2017年   139篇
  2016年   146篇
  2015年   104篇
  2014年   113篇
  2013年   524篇
  2012年   208篇
  2011年   196篇
  2010年   125篇
  2009年   118篇
  2008年   170篇
  2007年   160篇
  2006年   155篇
  2005年   149篇
  2004年   123篇
  2003年   124篇
  2002年   132篇
  2001年   80篇
  2000年   102篇
  1999年   71篇
  1998年   75篇
  1997年   54篇
  1996年   49篇
  1995年   31篇
  1994年   34篇
  1993年   44篇
  1992年   56篇
  1991年   64篇
  1990年   36篇
  1989年   50篇
  1988年   33篇
  1987年   40篇
  1986年   32篇
  1985年   52篇
  1984年   38篇
  1983年   35篇
  1982年   47篇
  1981年   54篇
  1980年   43篇
  1979年   40篇
  1978年   37篇
  1976年   27篇
  1975年   41篇
  1974年   41篇
  1973年   35篇
  1971年   27篇
排序方式: 共有4708条查询结果,搜索用时 15 毫秒
101.
This study considers how high school students perceive incidents of possible sexual harassment toward students and how they define sexual harassment. Thirty-five male and 38 female high school seniors (44% Asian-American; 40% white, non-Hispanic; 6% Indian-American; 4% African-American; 3% Hispanic; and 3% other ethnic groups) evaluated scenarios that varied the type of sexual harassment, the status of the initiator (either teacher or student), and the gender composition of the dyad (either male toward female or female toward male). As predicted, type of harassment influenced ratings of severity. Compared to male respondents, female respondents rated the scenarios as more severe. Teachers were judged more critically than students. Differences in status were more apparent at less severe levels of harassment. In defining harassment, students relied on four factors: the behavior itself, the target's reaction to the behavior, the perpetrator's intentions, and the relationship that existed between the two people. Overall, the findings underline the importance of examining high schools as a locale for harassment.This study was originally conducted by the first author as a Westinghouse Science project at Stuyvesant High School, with the guidance of the second and third authors.  相似文献   
102.
Scientists of the Human Genome Project tend to rely on three metaphors to describe their work, each of which implicitly tells much the same story. Whether they claim to interpret the ultimate “book,” to fix a flawed “machine,” or to map a mysterious “wilderness,” they invariably cast the researcher as one who dominates and exploits the Other. This essay, which explores the ways such a story conflicts with feminist values, proposes an alternative.  相似文献   
103.
A DEVELOPMENTAL DEFICIT IN LOCALIZING OBJECTS FROM VISION   总被引:3,自引:0,他引:3  
Abstract— We describe a college student, A. H., with a developmental deficit in determining the location of objects from vision. The deficit is selective in that (a) localization from auditory or tactile information is intact, (b) A H reports the identity of mislocalized objects accurately, (c) visual localization errors preserve certain parameters of the target location, and (d) visual localization is severely impaired under certain stimulus conditions, but nearly intact under other conditions. These results bear on the representation and processing of location information in the visual system, and also have implications for understanding developmental dyslexia.  相似文献   
104.
The relationship between perceived session helpfulness and session evaluation was examined in 11 dyads during eight sessions of short‐term counselling. Results based on the Session Evaluation Questionnaire (Stiles, 1980) showed that, for clients, while depth, arousal, and positivity correlated with perceived session helpfulness, only depth and positivity entered a stepwise regression, yielding a multiple correlation of 0.76. For counsellors, while depth and positivity correlated with session perceived helpfulness, only depth entered the stepwise regression analysis, with a correlation of 0.70. Session depth also consistently correlated with change in perceptions of helpfulness from one session to another. Clients had higher depth scores for sessions that both participants rated as helpful. They had lower depth scores for sessions rated as less helpful by both participants or for sessions where participants disagreed in their helpfulness ratings. The centrality of counselling depth in affecting experiences of counselling helpfulness is discussed.  相似文献   
105.
Subjects can name color words faster than they can name color patches. To account for that effect, a generic model of naming is described which assumes that words access the mental lexicon directly, whereas color patches do so only indirectly via an initial imaginal or semantic representation. However, Lund (1927) reported that the naming advantage for words disappeared when all the items to be named on a page were the same (i.e., they were blocked). In the present study, three experiments are reported that were designed to provide a clearer empirical definition of Lund’s blocking effect and to ascertain the extent to which it requires a modification of the generic model. The blocked lists had 50 items arranged into 10 blocks, with each block homogeneous with respect to color. The block lengths were either all a predictable length of 5 items or they varied randomly from 1 to 9 items. The data indicated the following: (1) The blocking effect occurred even when the task required a full identification of each item, and (2) the blocking effect was confined to within-block transitions. Blocking seemed to eliminate the word advantage by allowing the subject to re-use the lexical entry used for the immediately prior item, which is consistent with the generic model.  相似文献   
106.
The state-dependent model of premenstrual syndrome (PMS) suggests that women's perceptions of daily stressors are affected by menstrual cycle phase. Our objective was to further examine the applicability of this model to perceptions of specific kinds of daily stressors and to explore its generalizability to perceptions involving significant others. Thirty-two undergraduate women, 10 PMS and 22 asymptomatic controls, completed the Daily Stress Inventory (DSI) and the Daily Rating Form (DRF) for 35 days. Questionnaires measuring perceived social support and self-esteem were completed premenstrually and postmenstrually. Results indicated that all women perceived a greater number of stressors as being severe premenstrually as compared to postmenstrually. Furthermore, all women perceived a lesser number of signifcant others as being present in their social support network premenstrually. However, only the PMS women were less satisfied with their social support and had more negative self-esteem premenstrually as compared to postmenstrually. Results are discussed within the context of designing treatment intermentions for women with PMS.  相似文献   
107.
In Study 1, the effect of making tokens contingent on correct performance of low social position preschoolers on the McCarthy Scales of Children's Abilitieswas examined. Preschoolers in a token reinforcement group scored significantly higher (mean=8 IQ points) than subjects in a control group. In Study 2, the effect of tokens on McCarthyresults was examined as a function of social position in a 2×2 design. The high social position control group scored significantly above the low social position control. The low social position token reinforcement group, however, performed as well as both the high social position control and token reinforcement groups. Use of systematic reinforcement contingencies to reduce test error is discussed.  相似文献   
108.
109.
110.
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