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   595篇
  免费   22篇
  617篇
  2021年   5篇
  2020年   10篇
  2019年   5篇
  2018年   13篇
  2017年   14篇
  2016年   15篇
  2015年   14篇
  2014年   12篇
  2013年   73篇
  2012年   28篇
  2011年   29篇
  2010年   10篇
  2009年   16篇
  2008年   28篇
  2007年   24篇
  2006年   16篇
  2005年   27篇
  2004年   19篇
  2003年   26篇
  2002年   26篇
  2001年   11篇
  2000年   10篇
  1999年   7篇
  1998年   9篇
  1997年   9篇
  1996年   6篇
  1995年   5篇
  1994年   12篇
  1993年   6篇
  1992年   6篇
  1991年   7篇
  1990年   2篇
  1989年   5篇
  1988年   6篇
  1987年   8篇
  1986年   7篇
  1985年   8篇
  1984年   3篇
  1983年   7篇
  1982年   7篇
  1981年   16篇
  1980年   6篇
  1979年   3篇
  1978年   6篇
  1977年   8篇
  1976年   5篇
  1974年   9篇
  1971年   3篇
  1970年   2篇
  1954年   1篇
排序方式: 共有617条查询结果,搜索用时 15 毫秒
481.
Loneliness and eating disorders   总被引:1,自引:0,他引:1  
This article examines the link between loneliness and eating disorders. This concept is evaluated through a systematic review of the literature that links loneliness and eating disorders and through a survey of themes connecting the 2 conditions. Eating disorders-including anorexia nervosa, bulimia nervosa, and eating disorders that are not otherwise specified, which include binge eating disorder-are challenging health issues. Each of these diagnoses specifically relates to loneliness. This negative emotion contributes to and fuels eating disorder symptoms. Negative interpersonal relationships, both real experiences and individuals' skewed perceptions, exacerbate eating disorders and feelings of loneliness. Characteristics that have been associated with loneliness clearly relate to eating disorders. Understanding this relationship is vital, so that we can appreciate our patients' struggles and work to target these intense emotions within the treatment setting. We need to be aware of the power of loneliness as it applies to individuals in general and specifically to those struggling with disordered eating.  相似文献   
482.
Eating, persistence, and cardiovascular responses were evaluated after exposure to a 25‐min noise stressor with or without perceived control. Participants were healthy men (n = 29) and women (n = 34), aged 21 to 45 years. There were no group differences in cognitive task performance or blood pressure during the stressor. However, perceived control resulted in lower mean blood pressure and heart rate after cessation of the stressor for men and women. Women without perceived control displayed greater frustration levels following the stressor, and frustrated women ate more bland food than did nonfrustrated women. Perceived control and frustration did not affect food consumption among men following the stressor. These findings indicate that there are health‐relevant gender differences in biobehavioral responses that occur in the aftermath of stressor exposure. In addition, perceived control was especially important for women to attenuate the behavioral and biological effects of stressor exposure.  相似文献   
483.
Recent changes in gerontology have drawn attention to the role of spirituality among older adults. Demographic trends suggest that the number of African Americans over the age of 65 is increasing, with the largest shift to occur in persons 85 years of age and older. Given the paucity of information available regarding the relationship between spirituality and aging along with the increase in the number of older African Americans, a literature review of these concepts is sorely needed. This paper provides a thorough profile of older African Americans, with a review of historical and cultural factors that have informed the spiritual development of this population. Additionally, attention is given to methodological issues such as definitions, measures, sampling, and research designs at the interface of development and spirituality in this population. The paper also reviews findings to date about the effects of spirituality on physical and mental health among older African Americans.  相似文献   
484.
This study examined the effect of the length of a series of movements on the recall of those movements. Subjects (n =45) were randomly assigned to one of three experimental groups with each group recalling either three, six, or nine movements on a linear-slide apparatus. The subjects, while blindfolded, were presented with each movement by actively moving to a stop. Recall occurred 5 sec after the last movement to a stop on a trial. All subjects were given nine trials, each containing a different series of to-be-recalled movements. Results indicated that absolute error of recall of the three movements increased in a linear fashion. However, for six and nine movements, a bowing effect of the recall curve was noted following the fifth position. A primacy effect was more ‘ evident than was a recency effect. Accuracy of recall was a function of list length up to six movements, after which accuracy was not further impaired.  相似文献   
485.
Event-related potentials (ERPs) were recorded while subjects performed a validated mental rotation task, taken from the cognitive psychology literature. These ERPs show a late posterior negativity relative to a baseline condition requiring all of the same perceptual and cognitive processes except for the mental rotation itself. Our tentative identification of this posterior negativity with mental rotation is further supported by the finding that it varies systematically with the amount of mental rotation required on a trial by trial basis in the experimental task. We conclude that this late negativity is an ERP marker of the mental rotation process, and that this process engages primarily posterior brain regions.  相似文献   
486.
CHANGES IN THE FACIAL PROMINENCE OF WOMEN AND MEN OVER THE LAST DECADE   总被引:1,自引:0,他引:1  
Two studies measured the facial prominence of women and men in popular images over the last decade. The first study used 1,200 photo-graphs from Time and Newsweek for the years 1970 and 1980. The results indicate that overall, men have received greater facial prominence than women, and facial prominence has increased over the decade. Only for Newsweek did women show a significantly greater increase in facial prominence than men. The second study used 640 photographs from Good Housekeeping and Ms. for the years 1974 and 1984. The results show that overall, men have received greater facial prominence than women, and facial prominence has risen over the decade, although not by much. In Ms. , women but not men gained; in Good Housekeeping , women gained slightly, but not as much as men. The results are consistent with earlier reports of an asymmetry in representation of men's and women's faces and suggest that this asymmetry is slowly diminishing.  相似文献   
487.
Four monkeys, trained to match to sample, were asked to judge seven stimuli which differed in lightness, in terms of five response categories. The sample stimulus was presented on a black or white background, and all responses were made on a gray background. The mean judgment category for a stimulus was a function of the adaptation reflectance, and, in general, the ease of categorization depended upon the distance of the stimulus from the adaptation level.  相似文献   
488.
The perception of length depends on the mode of stimulation. When Ss were asked to judge the apparent lengths of blocks presented either visually or proprioceptively (between thumb and finger of one hand), visual length was proportional to block length, whereas proprioceptive length was an accelerating function of block length. When both visual and proprioceptive stimulation occurred simultaneously (S both saw and felt a block), the visual input was preemptive.  相似文献   
489.
A study was undertaken to attempt to relate selected defined factors to success in a Manpower Development Training Center program. Subjects were disadvantaged or culturally deprived adults who were referred to a nurse aide-orderly training course that consisted of both vocational and remedial education phases. Factors studied were an evaluation by the referring counselor in the stated interest of an individual taking the training, previous employment history (compiled by both type and duration), formal educational level, age when completing the course, expressed attitudes toward the course while enrolled, and aptitude test results.  相似文献   
490.
The purpose of this study was to examine the relationship between receptive and productive language acquisition in developmentally disabled children. A single-subject operant methodology was employed to evaluate the effect of training in one mode on performance in the other mode. Noun labels for pictured objects were used as the unit of analysis. Six children with severe language deficits participated in the experiment. Each subject learning to identify a different set of five pictures in each of four successively administered training conditions. In the first condition, a set of pictures was trained in the productive mode. In the second condition, a different set was trained in the receptive mode. These training conditions were then repeated using two additional sets of pictures. Training was done using reinforcement for correct responses and prompting for incorrect responses. Nonreinforced probes were conducted throughout training to assess performance in the untrained mode. The pictures in each set were trained successively so that transfer across the language modes could be studied separately for each response trained. All subjects successfully met the criteria for learning each picture set in both the receptive and productive training conditions. The probe data showed that opposite-modality performance improved as a function of both types of training, although performance levels differed. After productive training, five of six subjects' performance was highly accurate on receptive probes. By contrast, receptive training resulted in limited correct productive performance. Transfer from receptive training was negatively related to subjects' use of extra-experimental labels on productive probe trials. In addition to these competing response errors, subjects frequently made articulation errors. The findings suggest that for retarded children similar to those studied here, productive training will be sufficient to establish accurate receptive performance on vocabulary tasks. However, receptive training does not appear to be either a necessary or a sufficient condition for productive performance. The results do not support the reception-then-production training sequence based on normal language development.  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