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   2276篇
  免费   71篇
  2023年   14篇
  2021年   14篇
  2020年   33篇
  2019年   40篇
  2018年   45篇
  2017年   61篇
  2016年   43篇
  2015年   29篇
  2014年   48篇
  2013年   237篇
  2012年   73篇
  2011年   101篇
  2010年   67篇
  2009年   62篇
  2008年   79篇
  2007年   90篇
  2006年   84篇
  2005年   69篇
  2004年   84篇
  2003年   78篇
  2002年   84篇
  2001年   34篇
  2000年   43篇
  1999年   38篇
  1998年   33篇
  1997年   29篇
  1996年   34篇
  1995年   43篇
  1994年   32篇
  1993年   35篇
  1992年   32篇
  1991年   40篇
  1990年   23篇
  1989年   31篇
  1988年   21篇
  1987年   19篇
  1986年   25篇
  1985年   29篇
  1984年   30篇
  1983年   36篇
  1982年   28篇
  1981年   38篇
  1980年   19篇
  1979年   29篇
  1978年   29篇
  1977年   22篇
  1976年   19篇
  1975年   25篇
  1974年   15篇
  1973年   21篇
排序方式: 共有2347条查询结果,搜索用时 15 毫秒
961.
A sample of 147 female and 183 male year nine pupils, between the ages of 14 and 15 years, was invited to describe an event in their lives through which they thought that they had matured or grown. The girls were twice as likely as the boys to mention an event involving smoking. The boys were twice as likely as the girls to mention an event involving drinking. These findings confirm the different significance ascribed to both alcohol and tobacco by adolescent males and females as a landmark or milestone in the process of maturation. The implications of these findings for health education are discussed.  相似文献   
962.
In this study, we investigated temporal integration of disparity information for crossed and uncrossed stereopsis. Across three experiments, exposure duration thresholds were measured for stereoscopic stimuli created from dynamic random-dot stereograms. In Experiment 1, an investigation of disparity detection showed that detection thresholds were equal for the crossed and uncrossed directions. In Experiment 2, an examination of duration limits for depth perception showed that critical durations were lower, and depth more veridical, for crossed depth than for uncrossed depth. In Experiment 3, an investigation of depth discrimination revealed that discrimination thresholds were lower for crossed depth than for uncrossed depth. These results suggest that crossed and uncrossed mechanisms differ in terms of their temporal integration properties at processing levels involving the computation and discrimination of depth.  相似文献   
963.
To see whether observing information exchanges in “cyberspace” had a positive effect on computer usage and attitudes, students in an advanced undergraduate sexuality class were given an Internet project. Their pre- and postproject computer attitude and utilization reports were compared with those of a traditional computer usage research methods course taught by the same instructor. Overall, the e-mail/Internet project did not have a positive effect on computer usage and attitudes, whereas the more traditional computer as research tool usage taught in the methods class did have a positive effect.  相似文献   
964.
We evaluated the separate components in treatment packages for food refusal of 4 young children. First, treatment packages were implemented until food acceptance improved. Next, a component analysis was conducted within a multielement or reversal design to identify the active components that facilitated food acceptance. The results indicated that escape extinction was always identified as an active variable when assessed; however, other variables, including positive reinforcement and noncontingent play, were also identified as active variables for 2 of the children. The results suggest that the component analysis was useful for identifying variables that affected food acceptance.  相似文献   
965.
Previous research has shown that reminding subjects of their mortality encourages negative reactions to others whose behaviour or attitudes deviate from the cultural worldview (e.g. Greenberg, Pyszczynski, Solomon, Rosenblatt, Veeder, Kirkland and Lyon 1990; Greenberg, Simon, Pyszczynski, Solomon and Chatel 1992; Rosenblatt, Greenberg, Solomon, Pyszczynski and Lyon 1989). According to terror management theory, these findings result from a heightened need for faith in the cultural worldview that is activated by reminders of one's mortality. Study I assessed the plausibility of an alternative explanation which posits that mortality salience simply primes individuals' values. Whereas mortality salience led to harsher bond recommendations for a prostitute, a procedure that directly focused subjects on their values did not. Studies 2 and 3 assessed the possibility that reminding subjects of any worrisome future concern would produce the same effect as a reminder of mortality. In both studies, mortality salience led to negative reactions to a deviant and had no effect on self-reported affect, whereas other worrisome thoughts had no effect on reactions to a deviant but did create negative affect. Thus, consistent with terror management theory, mortality salience effects seem to result exclusively from thoughts of death.  相似文献   
966.
Surrounding space is not inherently organized, but we tend to treat it as though it consisted of regions (e.g., front, back, right, and left). The current studies show that these conceptual regions have characteristics that reflect our typical interactions with space. Three experiments examined the relative sizes and resolutions of front, back, left, and right around oneself. Front, argued to be the most important horizontal region, was found to be (a) largest, (b) recalled with the greatest precision, and (c) described with the greatest degree of detail. Our findings suggest that some of the characteristics of the category model proposed by Huttenlocher, Hedges, and Duncan (1991) regarding memory for pictured circular displays may be generalized to space around oneself. More broadly, our results support and extend thespatial framework analysis of representation of surrounding space (Franklin & Tversky, 1990).  相似文献   
967.
Two studies that examined the correlates of peoples′ reports of their own psychological well-being are reported (Ryff, 1989). In Study 1, extraverts reported better psychological adjustment than introverts, especially when they completed the questionnaires with no one else present. Need for social approval and the sex of the participant were unrelated to self-reports of well-being. Satisfaction with social activities, especially activities involving friends and parents, predicted psychological well-being but the frequency of social activity did not. Completing questionnaires in the presence of friends led to better self-assessments of well-being than completing them in the presence of strangers. In Study 2, internal locus of control, high desire for control, and being female, as well as perceived control over the testing situation, were found to predict reports of better psychological adjustment. It is suggested that future research on self-assessments of psychological well-being focus on: (a) the interaction effects of personality and situational variables; (b) the difference between seeking social interaction and seeking social approval: (c) the distinction between platonic and romantic relationships, and; (d) changes in the correlates of psychological well-being throughout the life-cycle.  相似文献   
968.
This paper discusses the influence that familial relationships can have on illness and the way in which illness can impact on the functioning of the family system. Developmental phases of illness, the family life cycle and chronic illness are all examined in relation to the family and it's functioning. The way in which health behaviours are adopted within families, and behavioural and genetic predispositions to illness are also discussed.  相似文献   
969.
Neither acculturation nor gender were found to significantly relate to Asian-American willingness to see a counselor for either a personal or an academic problem. Participants were more willing to see a counselor for an academic problem than for a personal problem.  相似文献   
970.
To determine if a detailed analysis of the language items of the Bayley Scales of Infant Development (BSID) would be useful in detecting language delay, the Bayley Mental Development Index (MDI) and Reynell Developmental Language Scales (RDLS-R) were administered to 137 low-birthweight infants at 2 years of age. In spite of scores in the normal range on the BSID, many of these children had significantly delayed language. However, the children with delayed language could be detected on the basis of detailed analysis of certain language items of the MDI, indicating that these items are more useful than the total MDI score.  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