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   3609篇
  免费   45篇
  3654篇
  2024年   30篇
  2023年   24篇
  2022年   22篇
  2021年   27篇
  2020年   72篇
  2019年   86篇
  2018年   106篇
  2017年   101篇
  2016年   92篇
  2015年   94篇
  2014年   83篇
  2013年   394篇
  2012年   122篇
  2011年   135篇
  2010年   90篇
  2009年   79篇
  2008年   116篇
  2007年   123篇
  2006年   122篇
  2005年   84篇
  2004年   105篇
  2003年   77篇
  2002年   83篇
  2001年   134篇
  2000年   135篇
  1999年   91篇
  1998年   36篇
  1997年   44篇
  1996年   31篇
  1995年   24篇
  1994年   32篇
  1992年   50篇
  1991年   64篇
  1990年   49篇
  1989年   54篇
  1988年   48篇
  1987年   44篇
  1986年   28篇
  1985年   32篇
  1984年   37篇
  1983年   24篇
  1982年   24篇
  1981年   25篇
  1979年   26篇
  1977年   24篇
  1976年   22篇
  1975年   24篇
  1974年   22篇
  1973年   21篇
  1971年   22篇
排序方式: 共有3654条查询结果,搜索用时 0 毫秒
41.
The use of unobtrusive measures has been advocated for some time by methodologists and research workers. (Webb et al., 1966). Recently Wing and Baddeley (1978) used simple measures of handwriting as indices of stress. They found that the height of the letter and the length of ticks (check marks), indicating answers to questions, increased significantly after alcohol intake.It has been shown in the past that measures based on the dimensions of letters or digits provide a sensitive index of stress (Baddeley et al., 1969; Legge et al., 1964). However, it has not yet been shown whether there is any relationship between the size of circles around ‘yes’ or ‘no’ answers to a personality questionnaire, and the scale scores it is measuring.This paper reports an investigation whose aim it was to relate circle size to the scale scores of Neuroticism, Extraversion, Psychoticism, and the Lie-scale of the EPQ (Eysenck and Eysenck, 1978).  相似文献   
42.
The purpose of the present study was to determine if aphasic subject groups differentiated by the fluency of their verbal output employed rehearsal as a strategy for maintaining verbally coded information in primary memory. A task based upon the Brown-Peterson paradigm was administered to 10 fluent aphasic patients, 10 nonfluent aphasic patients, 10 right-brain-damaged patients, and 10 nonneurological patients. The findings indicate that the nonfluent aphasic patients did not rehearse the verbal information while the fluent aphasic, right-brain-damaged, and nonneurological patients did rehearse. In addition, both fluent and nonfluent aphasic patients encoded significantly less information into the memory system initially and performed worse on the task overall than right-brain-damaged and nonneurological patients.  相似文献   
43.
Effects of the dimensionality of responsibility and causality attributions were investigated. An accident was described. Subjects cued to respond with causality attributions increased their attributions with event severity. Subjects cued to respond with moral responsibility attributions decreased attributional levels with increasing severity. Assignments of guilt varied specifically with the cued attributional concept.  相似文献   
44.
Rats were either exposed or not exposed to a mouse in their living cage for a 48-hr period. At the end of this time a bilateral lesion was made in the medial accumbens region or in the medial hypothalamus. When tested 2 days postoperatively, the killing frequency among rats that had been exposed to mice preoperatively was not significantly lower than that of rats that were not preoperatively exposed. The ineffectiveness of preoperative experience in suppressing the mouse killing induced by medial accumbens and medial hypothalamic lesions is similar to that found previously with dorsal-median raphe lesions and olfactory bulb lesions and is in contrast to the ease with which preoperative experience prevents mouse killing induced by septal lesions and serotonergic lesions induced by 5,7-dihydroxytryptamine.  相似文献   
45.

Treatment of rats with the potent antiaggressive compound eltoprazine hydrochloride (1.0 & 2.0 mg/kg) slowed both predatory attack and killing of frogs. These results demonstrate a specific predation-inhibiting action of the drug which is not obscured by the elements of conspecific aggression seen during muricide. Unlike the closely related compound fluprazine, eltoprazine increased both attack and kill latencies implying that the effects of the two drugs on predation are mediated by at least somewhat distinct drug actions. It is further suggested that eltoprazine may be more specifically antiaggressive in its actions than related phenylpiperazine compounds.

  相似文献   
46.
This study was designed to provide data for notions that differences in achievement motivation in different nations may contribute to differences in national rates of economic growth. The nations investigated were the United Kingdom and Japan as representatives of low and high rates of economic growth in the decades after the end of World War II. Data were collected from college students for motivations and attitudes related to work. British students had higher achievement motivation, while Japanese students had higher competitiveness motivation and strong money beliefs. Differences in career preference between the nations were also presented. The relationship between motivations and attitudes to work with career preference were examined for each nation.  相似文献   
47.
The developmental course of rhythmic motor behavior was followed longitudinally for three groups of preambulatory children — normally developing, Down syndrome, and those with profound motor impairment. The groups differed in chronological age but were comparable with respect to motor age. The motor impaired subjects displayed significantly less rhythmic motor behavior than the nondisabled and Down syndrome groups. In comparing particular subtypes of rhythmic motor behavior, differences were found in both the average number of bouts and duration of subtypes among the groups. Longitudinal analyses of the data over the entire observation period revealed that the rhythmic motor behavior of the children with Down syndrome was more similar to that exhibited by the nondisabled children than was the rhythmic motor behavior of the children with motor impairment. However, there was considerable variability among the groups in several particular subtypes.This research was supported by grants from the National Institute of Child Health and Human Development (HD 17650 and HD 07226).The authors acknowledge the assistance of Robert E. Arendt, Grant Youngquist, Michael Hohn, and Charles Lowitzer in obtaining the observational data and thank the families of the subjects for their enthusiasm and dedication to the project.This study was presented at the 23rd Annual Gatlinburg Conference on Research and Theory in Mental Retardation and Developmental Disabilities, April 21, 1990.  相似文献   
48.
In the literature, one finds rich analyses of the psychological, emotional, and social needs of gifted people. The data on the specific psychological needs of gifted minority children, however, are lacking; one finds even less information on their cultural needs. This article examines the psychological and social difficulties confronting gifted Black students. Racial identity development theory is described briefly, including the significance of culture on achievement and psychological well-being. Finally, recommendations are made for counselors who wish to work effectively with gifted Black students.  相似文献   
49.
Recent research suggests important age and sex differences in the sex-typing of children's vocational interests. The present study adds to this area by examining several dimensions of job choices in children of four age groups (early and late preschool, second and fourth grade). The 120 children interviewed were asked three fixed-choice questions regarding nine jobs, along with open-ended job choice items. Analysis of age effects on several predetermined dimensions showed that older children were more selective in personal job choice, especially in regard to jobs attributed to the opposite sex. Avoidance of choices associated with the other sex was stronger in boys, but other sex differences were dependent on mode of inquiry rather than on sex. Girls were less limited than boys in job interests when asked about specific jobs but expressed more restricted choices on open-ended items. Implications of these findings both for further research and educational practices are considered.  相似文献   
50.
Rorschach's justifications for the use of symmetry in his inkblots are evaluated in the light of recent empirical research concerning the perception of symmetry. The role of symmetry in response facilitation, in the production of whole and movement responses, in the creation of similar conditions for left- and right-handers, and as a response determinant, is discussed and re-evaluated.  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