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   22925篇
  免费   883篇
  国内免费   11篇
  2019年   274篇
  2018年   391篇
  2017年   408篇
  2016年   434篇
  2015年   333篇
  2014年   369篇
  2013年   1873篇
  2012年   658篇
  2011年   680篇
  2010年   407篇
  2009年   381篇
  2008年   510篇
  2007年   588篇
  2006年   500篇
  2005年   469篇
  2004年   437篇
  2003年   437篇
  2002年   467篇
  2001年   791篇
  2000年   752篇
  1999年   576篇
  1998年   234篇
  1996年   227篇
  1995年   207篇
  1992年   460篇
  1991年   465篇
  1990年   450篇
  1989年   418篇
  1988年   431篇
  1987年   392篇
  1986年   403篇
  1985年   404篇
  1984年   314篇
  1983年   284篇
  1982年   214篇
  1981年   210篇
  1979年   357篇
  1978年   271篇
  1977年   219篇
  1976年   211篇
  1975年   294篇
  1974年   361篇
  1973年   380篇
  1972年   300篇
  1971年   291篇
  1970年   294篇
  1969年   259篇
  1968年   361篇
  1967年   317篇
  1966年   293篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
The present study examined differences in pelvic vasocongestion as a function of negative attitudes toward masturbation. Pelvic vasocongestion was measured thermographically, which is a noninvasive means of detecting and photographing individual heat patterns to indicate physiological condition and functional changes within. The results indicated that women, with positive attitudes toward masturbation, who read an erotic story, experienced the greatest increase in pelvic vasocongestion. This and other findings were discussed in terms of masturbation acting to facilitate the patterning of sexual arousal and orgasmic functioning, especially in regard to creating the capacity for pelvic engorgement.  相似文献   
992.
993.
994.
995.
996.
Simple motor reaction times (right-handed) to tape-recorded consonant-vowel syllables were obtained from 12 subjects under two conditions of monotic stimulation: “expected” presentation (subject informed as to ear of presentation) and “random” presentation (ear of presentation varied randomly). Significantly faster left ear reaction times were obtained in the “expected” condition. The rank order of subjects' standard dichotic listening task scores correlated negatively with reaction time ear differences in the “expected” presentation condition. Results are discussed in terms of existing theories of response lateralization in simple reaction time tasks, and an expanded hypothesis is offered. Specifically, it is suggested that two or more distinct but potentially overlapping mechanisms may be responsible for observed asymmetries in monotic auditory perception. Both an attentional or lateralized motor response bias and an inherent lateralization of function may operate side by side, differentially activated by task demands, mode of stimulus presentation, and nature of stimuli.  相似文献   
997.
998.
The evolution of the concept of “sleeper effects” is traced from the work of J. Kagan and H. A. Moss (Birth to Maturity. New York: Wiley, 1962) to the present time. The phenomenon was originally inferred, without cross-validation, in the domain of personality, from correlations with early events which were stronger late in development than earlier. More recently it has been extended to account for long-term attainment differences associated with the presence or absence of preschool intervention. It seems possible that the original evidence may have capitalized upon chance fluctuations of few among many correlations. What is more certain, however, is that as currently used the term is imprecise, usually unjustified, and irrelevant to the supposed later effects of brief early intervention.  相似文献   
999.
One-hundred and four women were tested on an eyelid conditioning paradigm in a 2 x 2 x 2 factorial design where two levels of US intensity (1 vs 3 p.s.i.) were balanced against two rest pause interpolations (after 25 and after 50 trials), and the presence or absence of a warning stimulus prior to CS-US presentation. Subjects were later classified as high, low or intermediate extraverts on the basis of a personality questionnaire. A very detailed analysis of conditioned responses was carried out, using both simple and composite measures including work-ratio, utility-ratio, CR frequency, peak latency, peak amplitude, response area and effective response area, degree of avoidance amplitude and latency, etc. Major findings related to similar effects of high intensity US vs low intensity US, and introversion vs extraversion; introverts react as if they were responding to more intense stimuli than extraverts. This finding cuts across other parameter variables, and supports Eysenck's formulation of personality-conditioning relationships in terms of higher cortical arousal in introverts as compared with extraverts.  相似文献   
1000.
The job experiences of a group of young people of English and Pakistani origin who had left school four years earlier at the age of 16 were investigated using interviews and retrospective data from careers-office files. Job-changing had been frequent during the first 18 months of employment, with changes being largely of a non-promotional kind. Those who had experienced regular non-promotional job-change tended to have had low attainment in basic educational skills and inadequately developed vocational attitudes and personalities when leaving school. Yet in the majority of cases early mobility had led to stability by the end of the fourth post-school year. It is suggested that early job-changing may serve a positive function for the individuals concerned Implications for careers guidance in school are discussed.  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