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   22452篇
  免费   895篇
  国内免费   11篇
  2020年   206篇
  2019年   268篇
  2018年   394篇
  2017年   418篇
  2016年   439篇
  2015年   332篇
  2014年   371篇
  2013年   1819篇
  2012年   658篇
  2011年   671篇
  2010年   402篇
  2009年   393篇
  2008年   513篇
  2007年   582篇
  2006年   495篇
  2005年   468篇
  2004年   440篇
  2003年   430篇
  2002年   455篇
  2001年   753篇
  2000年   723篇
  1999年   543篇
  1998年   229篇
  1996年   224篇
  1995年   206篇
  1992年   457篇
  1991年   447篇
  1990年   429篇
  1989年   406篇
  1988年   419篇
  1987年   379篇
  1986年   389篇
  1985年   394篇
  1984年   314篇
  1983年   277篇
  1982年   208篇
  1981年   214篇
  1979年   353篇
  1978年   260篇
  1977年   220篇
  1975年   281篇
  1974年   356篇
  1973年   367篇
  1972年   289篇
  1971年   283篇
  1970年   284篇
  1969年   254篇
  1968年   350篇
  1967年   309篇
  1966年   284篇
排序方式: 共有10000条查询结果,搜索用时 171 毫秒
951.
The effects of valence of alternatives, choice, and expected delay of choice consequences on postdecision evaluations of choice alternatives were studied by either giving subjects a choice between two experimental tasks (both either pleasant or unpleasant) or assigning subjects their initially preferred task. Crosscutting valence and choice, subjects expected either no delay, 10-min delay, or 30-min delay before engaging in the task. All subjects evaluated both tasks immediately after the delay instructions but before experiencing the actual delay. Results confirmed the expected dissonance effect; that is, an upward evaluation of the chosen alternative and a downward evaluation of the rejected alternative, relative to no-choice conditions. Moreover, the relative upward evaluation of the chosen alternative increased as the expected delay decreased. Valence was not found to interact with other variables. The results are discussed in terms of differential salience of choice alternatives.  相似文献   
952.
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   
953.
954.
955.
956.
957.
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   
958.
959.
This paper is a reply to an article in this journal by M. Zimmerman titled “The Home Observation for Measurement of the Environment: A Comment on Elardo and Bradley's Review”. We found Zimmerman's critique of our original review article (Developmental Review, 1981, 1, 113–145) to contain points which were well taken, and several which seemed pedantic. Specifically, we address his concerns about our discussion of the HOME scale's interrater reliability, test-retest stability, concurrent validity, and predictive validity; and we reply to his comments about the uses of the HOME scale for purposes of screening and matching environments.  相似文献   
960.
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   
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