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   55158篇
  免费   2255篇
  国内免费   54篇
  2020年   648篇
  2019年   835篇
  2018年   1201篇
  2017年   1206篇
  2016年   1259篇
  2015年   846篇
  2014年   1030篇
  2013年   4879篇
  2012年   1865篇
  2011年   1998篇
  2010年   1157篇
  2009年   1200篇
  2008年   1788篇
  2007年   1793篇
  2006年   1543篇
  2005年   1391篇
  2004年   1388篇
  2003年   1261篇
  2002年   1278篇
  2001年   1786篇
  2000年   1690篇
  1999年   1291篇
  1998年   697篇
  1997年   602篇
  1996年   541篇
  1995年   542篇
  1994年   511篇
  1993年   526篇
  1992年   1019篇
  1991年   959篇
  1990年   948篇
  1989年   858篇
  1988年   823篇
  1987年   809篇
  1986年   810篇
  1985年   862篇
  1984年   679篇
  1983年   585篇
  1982年   476篇
  1979年   662篇
  1978年   489篇
  1976年   451篇
  1975年   590篇
  1974年   627篇
  1973年   596篇
  1972年   543篇
  1971年   476篇
  1968年   546篇
  1967年   542篇
  1966年   475篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
Investigation of the role of pictures in children’s comprehension and retention of written texts has produced reports of very different levels of facilitation. This article reviews the literature with respect to a proposed explanatory model that relates the differential pictorial facilitation to the type of material used and the children’s strategy in approaching it. It is suggested that the reported enhancement of factual texts results from the utilization of pictorial adjuncts to promote encoding of a distinct and unique conceptual unit, the subsequent retrieval of which is thereby improved. With story text, the effectiveness of pictures as encoding aids is limited by the predominance of the story schema in determining encoding and retrieval.  相似文献   
952.
The present study examined the hypothesis that violation and role-playing instructions are necessary conditions for facilitation on Wason’s selection task and that facilitation due to memory cueing via thematic content is secondary. The results of a factorial experiment employing these factors did not support the hypothesis. Memory cueing was indicated as the primary factor, but violation instructions did increase the amount of facilitation observed. This interactive effect and the nature of facilitation by memory cueing are briefly discussed.  相似文献   
953.
954.
955.
Experiments 1 and 2 established children’s (mean age 3 years, 7 months) subject-relative and object-relative motion thresholds at 1°31.37′/sec and 1°9.33′/sec, respectively, speeds well above those found for adults. Experiment 3 established that preschoolers, like adults, attribute object-relative motion to the smaller of two objects, with the inducing properties of the larger stimulus greatest when it is surrounding rather than adjacent to a smaller stimulus. The inducing advantage of surroundedness was equivalent for a single-element square frame and a multielement six-dot frame.  相似文献   
956.
A sample of delinquent and nondelinquent male adolescents was assessed with respect to locus of control and intellectual achievement responsibility. Data were also gathered concerning age, family size, birth order, socioeconomic status, race, and school grade. Results were subjected to a multivariate analysis and showed support for a multidimensional model of locus of control. There was no difference in expectancy of control for negative academic events between delinquents and nondelinquents. In general, birth order and delinquency were the two most important determinants of locus of control. Results are discussed in terms of previous literature on locus of control with particular consideration paid to expectations of control.  相似文献   
957.
When an imperative visual stimulus is paired with an auditory (accessory) stimulus, RT is generally faster than with the imperative stimulus alone. Three experiments using additive-factors logic tested an energy-summation view of the accessory, where effects are due to increased rate of information build-up in sensory stages, and a preparation-enhancement view which holds that the accessory serves an alerting function. Experiment 1 found no interaction between the accessory presence and (visual) stimulus brightness, suggesting no role of the accessory in stimulus identification. Experiment 2 found no interaction between accessory presence and spatial S-R compatibility, arguing that the accessory operated in stage(s) other than response selection. Experiment 3 produced an interaction between the accessory and movement complexity, arguing for accessory effects in a response-programming stage. The data generally favored preparation-enhancement, and offered no support for an energy-summation view.  相似文献   
958.
This study assessed the role of adaptive versus maladaptive coping behaviors and personal characteristics in influencing the affective reactions of managers to four role stressors. Maladaptive coping was found to moderate the relationships of several role stressors with felt stress and job satisfaction. Maladaptive coping and trait anxiety also demonstrated independent additive effects on felt stress and job satisfaction over and above that of all four stressors.  相似文献   
959.
Three measures of chronic self-esteem, plus four measures developed to assess situational components of self-esteem (task-specific self-esteem and social self-esteem), were administered to 238 undergraduates at a large, urban university and a community college in the southeastern United States. Evidence for a composite construct of self-esteem was found. Results also indicate task-specific self-esteem correlates as high as .42 (p < .01) with chronic self-esteem and as high as .76 (p < .01) with social self-esteem. Task-specific self-esteem was found to be a better predictor of grade point average than chronic or social self-esteem. Suggestions are made for further research on the situational components of self-esteem to extend current findings.  相似文献   
960.
This study tested aspects of Super's self-concept theory of career development with a sample of British schoolchildren. Findings suggested that self-concepts and concepts of occupational preferences do have a role in career development, though there were some indications that the theory is more applicable to more able youngsters and to those high in self-esteem, than to others. Agreement between ideal-self-concepts and occupational preference concepts was significantly greater than that between actual-self-concepts and occupational preference concepts. This finding was interpreted as reflecting the youngsters' greater concern for the future and the possible, rather than the present and the given, and it suggested that refinements are needed in Super's theory.  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