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   25853篇
  免费   494篇
  国内免费   2篇
  26349篇
  2020年   296篇
  2019年   385篇
  2018年   512篇
  2017年   461篇
  2016年   548篇
  2015年   377篇
  2014年   450篇
  2013年   2157篇
  2012年   817篇
  2011年   898篇
  2010年   540篇
  2009年   607篇
  2008年   728篇
  2007年   813篇
  2006年   705篇
  2005年   632篇
  2004年   666篇
  2003年   600篇
  2002年   571篇
  2001年   672篇
  2000年   683篇
  1999年   510篇
  1998年   338篇
  1997年   263篇
  1996年   280篇
  1995年   259篇
  1994年   263篇
  1993年   234篇
  1992年   398篇
  1991年   390篇
  1990年   397篇
  1989年   355篇
  1988年   345篇
  1987年   328篇
  1986年   330篇
  1985年   353篇
  1984年   278篇
  1983年   302篇
  1982年   246篇
  1979年   340篇
  1978年   320篇
  1977年   232篇
  1975年   285篇
  1974年   310篇
  1973年   335篇
  1972年   286篇
  1971年   270篇
  1968年   299篇
  1967年   296篇
  1966年   249篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
921.
Zaff JF  Blount RL  Phillips L  Cohen L 《Adolescence》2002,37(148):751-773
Much coping research has been conducted comparing members of different ethnic groups using discrete racial classifications. However, the past two decades have seen the construct of ethnicity evolve into a complex variable that must be assessed in a more comprehensive way. This study explored how ethnicity, a discrete variable, and the continuous variables of a person's ethnic identity and self-construal contribute to the use of particular coping strategies across various situations. One hundred twelve seventh graders (67 African Americans and 45 Caucasian Americans) from three suburban middle schools completed questionnaires assessing ethnic identity, self-construal, and coping strategies for medical, test, and social criticism stressors. Results supported the hypothesis that ethnicity as a discrete variable is not associated with coping, but that ethnic identity and self-construal are. It was also found that high scores on the ethnic identity and self-construal scales were indicative of more positive psychological adjustment. Implications for future research and methodological considerations are discussed.  相似文献   
922.
Snow M  Thurber S  Hodgson JM 《Adolescence》2002,37(148):835-840
Item content of the Michigan Alcoholism Screening Test (MAST) was modified to make it more appropriate for young persons. The resulting test was found to have lower internal consistency than the adult MAST, but the elimination of five items with comparatively poor psychometric properties yielded an acceptable alpha coefficient of .73. A unitary factor model for the adolescent MAST was not confirmed; indeed, the revised test appeared to be factorially complex. Recommendations for further revisions are discussed.  相似文献   
923.
Most additive factors method (AFM) analyses of choice reaction time (CRT) have used alphanumerics whereas tests of single process models have often used line length or line orientation. The suggestion is raised that commonly observed additive effects of variables on CRT might not apply to stimuli of the latter category. This would mean a severe limitation of the AFM in that the stage structure of choice reactions would be stimulus specific. The issue is addressed in two experiments. The first showed additive effects of stimulus quality and stimulus-response compatiblility for both alphanumerics and line orientations as stimuli. The second showed that for both stimulus categories the effect of stimulus quality was fully reflected in visual fixation time. Together the results argue against a single central process and favour a stage model of CRT.  相似文献   
924.
Processing speed was assessed at 5, 7, and 12 months in full-term and preterm infants (birth-weight < 1,750 g). Speed was gauged directly in a new task by presenting infants with a series of paired faces, one that remained the same across trials and one that changed; trials continued until infants showed a consistent novelty preference. At all ages, preterms required about 20% more trials and 30% more time than full-terms to reach criterion. Among preterms, slower processing was associated with greater medical risk (e.g., respiratory distress syndrome). Developmental trajectories for speed (and attention) were similar for both groups. Thus, the deficits in processing speed previously found for preterms in childhood are already present in the 1st year of life.  相似文献   
925.
When the leader of an established therapy group decides to leave, the group may wish to continue with a new leader. This decision deserves careful exploration. The transfer of leadership to a new leader is a powerful event in a group. New leaders often experience strong countertransference reactions. Specific recommendations for new leaders include meeting individually with each continuing member, helping the group stabilize and process the meaning of the change, and developing ownership of the leader role. When managed successfully, a leadership transition can strengthen the group cohesion and offer important therapeutic opportunity.  相似文献   
926.

Authors Index

List of Contributors  相似文献   
927.
The impact of cross-training on team effectiveness   总被引:11,自引:0,他引:11  
The authors examined the role of cross-training in developing shared team-interaction mental models, coordination, and performance in a 2-experiment study using computer simulation methodology (for Experiment 1, N = 45 teams; for Experiment 2, N = 49 teams). Similar findings emerged across the 2 experiments. First, cross-training enhanced the development of shared team-interaction models. Second, coordination mediated the relationship between shared mental models and team performance. However, there was some inconsistency in the findings concerning the depth of cross-training necessary for improving shared mental models. Results are discussed in terms of the impact of different levels of cross-training on team effectiveness.  相似文献   
928.
A new contraceptive technology may advance the science of family planning but may do little to affect health if potential users do not deem it an acceptable method. The authors conducted an acceptability study of a newly developed contraceptive method--personal hormone monitoring. A sample of 480 English volunteers present at the 6th month of a 13-month longitudinal study completed surveys regarding their attitudes toward a personal hormone monitor for the purpose of contraception. The authors used the participants' responses to determine (a) the extent to which the participants accepted the monitor, (b) how their ratings of acceptability changed over time, (c) the extent to which contextual variables predicted changes in acceptability over time, and (d) whether those contextual variables predicted final acceptability of the monitor. Results suggested that no single method of family planning is best for everyone and specified the people for whom personal hormone monitoring may be most suitable.  相似文献   
929.
The present study investigated the effects of multiple trauma exposure and coping style on post-traumatic stress symptoms and quality of life. It was hypothesized that sensitization would occur in subjects repeatedly exposed to life-threatening situations (study 1), and different coping styles would act as a resilience or facilitating factor in symptom development (study 2). The results showed that the single-exposure group revealed a decrease in trauma specific stress reactions from three weeks to four months, with a persistent reduction at 12-month follow-up, while the repeated-exposure group showed an increase in symptom reporting over the 12-month period. The same pattern emerged for perceived quality of life-measured by the General Health Questionnaire (GHQ-30). The second study revealed a correlation between scores on avoidant-focused coping style and the Impact of Event Scale-avoidance dimension, Post-traumatic Symptom Scale and GHQ-30. Furthermore, only subjects with a dominant coping style of emotion-focused or task-focused coping showed a reduction in trauma-specific symptom scores over time.  相似文献   
930.
The phonological priming paradigm, in which participants respond to the second of 2 consecutively presented spoken words, has the potential to be a useful tool with which to study lexical processing. Concerns about response biases distorting the results have persisted since its introduction. This study explored the manifestation of biases by modifying the standard priming experiment such that the magnitude of priming effects using the same items could be compared at different points during the testing session. Four experiments investigated whether a recent dissociation of response biases and priming effects is evidence of lexical inhibition when the prime and target overlap by the first 3 word-initial phonemes (M. Hamburger & L. M. Slowiaczek, 1996). Biases were found in conditions previously thought to prevent their influence.  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