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   6810篇
  免费   193篇
  国内免费   4篇
  2018年   116篇
  2017年   100篇
  2016年   96篇
  2015年   71篇
  2014年   88篇
  2013年   542篇
  2012年   198篇
  2011年   180篇
  2010年   94篇
  2009年   110篇
  2008年   162篇
  2007年   179篇
  2006年   152篇
  2005年   146篇
  2004年   138篇
  2003年   129篇
  2002年   144篇
  2001年   230篇
  2000年   218篇
  1999年   154篇
  1998年   66篇
  1997年   64篇
  1996年   63篇
  1993年   64篇
  1992年   128篇
  1991年   125篇
  1990年   130篇
  1989年   110篇
  1988年   93篇
  1987年   105篇
  1986年   115篇
  1985年   116篇
  1984年   107篇
  1983年   90篇
  1981年   66篇
  1980年   64篇
  1979年   103篇
  1978年   86篇
  1977年   69篇
  1975年   77篇
  1974年   101篇
  1973年   115篇
  1972年   83篇
  1971年   76篇
  1970年   87篇
  1969年   84篇
  1968年   113篇
  1967年   89篇
  1966年   108篇
  1958年   72篇
排序方式: 共有7007条查询结果,搜索用时 15 毫秒
201.
The purpose of this study was to determine the extent to which lobectomy affects ability to discriminate facial identity or facial expression. Fifteen right temporal, 15 left temporal, 5 right frontal, and 4 left frontal lobectomy patients, pair-matched for age, sex, and education to normal control subjects, participated in this study. Tasks included a Facial Identity Matching Task and a Facial Affect Matching task. The lobectomized patients as a whole were significantly impaired on both tasks (22% decrement in performance). The patients made twice as many errors resulting from perseveration of response-set of the first condition (identity or emotion matching) into the second condition. The site of lobectomy did not influence general performance on any one task or selective performance on any subset of affective categories. It was concluded that all four brain regions play a significant and equal role in face processing, and that circuits more specifically dedicated to visual face processing, which are responsible for hemispheric dominance affects and affect/identity dissociations, are probably located more posteriorly in the brain. Finally, it was concluded that perseveration of acquired habit may, under specific conditions, characterize temporal lobe dysfunction just as much as frontal lobe dysfunction.  相似文献   
202.
203.
Managed care and organized systems of care are restructuring the delivery of care in the United States. As care is reorganized, physician practice styles, autonomy, and compensation are undergoing profound changes. To successfully integrate physicians into the new managed systems of care, their organizational relationship to and their compensation within these systems must be carefully considered. This paper first explores physician motivation as it is related to compensation. The paper then describes a variety of emerging organizational designs aimed at aligning the interests of physicians and hospitals. The author considers fully integrated, physician-hospital organizations with target income compensation arrangements to be most suitable to the collective success of professionals and organized systems of care. The paper concludes with a discussion of the many dilemmas and challenges posed by the intertwining of managed care, organized networks of care, and professional compensation.  相似文献   
204.
Seven undergraduates participated in a concurrent-choice experiment with monetary reinforcers. Response-independent analogues of variable-interval and variable-ratio schedules were used to assess whether subjects would maximize reinforcement rate. The optimal pattern of behavior, in terms of maximizing reinforcement rate, involved a large bias toward the ratio alternative, with only occasional sampling of the interval schedule. Most experiments with pigeons, however, demonstrate matching of response rates to reinforcement rates, with only slight biases for the ratio schedule. Although subjects in the present experiment allocated more time to the ratio alternative than required by matching, the magnitude of the bias did not approximate that predicted by a maximizing account. After exposure to clock stimuli correlated with the operation of each schedule, 1 subject's behavior did show a substantial level of bias, increasing the total number of reinforcers obtained, and lay at a point between the predictions of matching and maximizing. The other subjects, however, continued to respond less optimally. The present results can be accounted for by a view of matching that incorporates the effects of delayed reinforcement.  相似文献   
205.
GLOBAL PROCESSING OF BIOLOGICAL MOTIONS   总被引:1,自引:0,他引:1  
Abstract— The structure of the human form is quickly and unequivocably recognized from 10 to 13 points of light moving as if attached to the major joints and head of a person walking Recent psychophysical and computational models of this process suggest that these displays are organized by low-level processing constraints that delimit the pair-wise connections of the point lights In the current research, these low-level constraints were rendered uninformative by a masking paradigm The results from four experiments converged to show that the perception of structure in a point-light walker display does not require the prior detection of individual features or local relations  相似文献   
206.
Fee as a variable that could have an impact on college students' perceptions of counseling was explored because of the authentic concerns about college counseling centers needing to charge direct fees for their services. Participants (N = 350) represented a cross-section of potential consumers of psychological services, not just individuals currently receiving services. On an overt level, fees seemed to be less influential in counseling considerations, but were taken into account on a more covert level. This study supports the psychological literature, which suggests that fee is not the most important factor in clients' decisions to seek counseling. Implications for counselors, administrators, researchers, and program planners are discussed.  相似文献   
207.
Researchers investigated the relationship between measures of interpersonal behavior and narcissism. Eight octant measures of interpersonal behavior were constructed, and validity and reliability estimates were obtained. High school and junior high school students (N = 333) completed five measures of narcissistic vulnerability, eight octant measures of interpersonal behavior, and a measure of social desirability. Canonical correlational analysis indicated a specific pattern of interpersonal behaviors for individuals with differing levels and types of narcissistic vulnerability. A multivariate analysis of variance (MANOVA) indicated that scores on several of the scales were found to differ significantly by sex and by treatment for emotional, behavioral, or educational difficulties. Implications for counseling are considered.  相似文献   
208.
Memory Changes in Normal Aging   总被引:3,自引:0,他引:3  
  相似文献   
209.
210.
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