全文获取类型
收费全文 | 2858篇 |
免费 | 63篇 |
国内免费 | 1篇 |
专业分类
教育 | 2362篇 |
科学研究 | 45篇 |
各国文化 | 46篇 |
体育 | 122篇 |
综合类 | 1篇 |
文化理论 | 14篇 |
信息传播 | 332篇 |
出版年
2023年 | 10篇 |
2022年 | 12篇 |
2021年 | 43篇 |
2020年 | 45篇 |
2019年 | 75篇 |
2018年 | 100篇 |
2017年 | 111篇 |
2016年 | 108篇 |
2015年 | 77篇 |
2014年 | 108篇 |
2013年 | 640篇 |
2012年 | 90篇 |
2011年 | 88篇 |
2010年 | 73篇 |
2009年 | 93篇 |
2008年 | 97篇 |
2007年 | 81篇 |
2006年 | 59篇 |
2005年 | 74篇 |
2004年 | 87篇 |
2003年 | 60篇 |
2002年 | 51篇 |
2001年 | 46篇 |
2000年 | 55篇 |
1999年 | 56篇 |
1998年 | 44篇 |
1997年 | 41篇 |
1996年 | 46篇 |
1995年 | 35篇 |
1994年 | 45篇 |
1993年 | 35篇 |
1992年 | 46篇 |
1991年 | 32篇 |
1990年 | 30篇 |
1989年 | 18篇 |
1988年 | 17篇 |
1987年 | 12篇 |
1986年 | 20篇 |
1985年 | 19篇 |
1984年 | 15篇 |
1983年 | 12篇 |
1982年 | 10篇 |
1981年 | 18篇 |
1980年 | 11篇 |
1979年 | 12篇 |
1978年 | 5篇 |
1976年 | 9篇 |
1975年 | 9篇 |
1974年 | 8篇 |
1973年 | 5篇 |
排序方式: 共有2922条查询结果,搜索用时 15 毫秒
991.
Can parents and teachers provide a reliable and valid report of behavioral inhibition? 总被引:3,自引:0,他引:3
Reliability and validity of parent and teacher report of behavioral inhibition (BI) was examined among children aged 3 to 5 years. Confirmatory factor analysis supported 6 correlated factors reflecting specific BI contexts, each loading on a single, higher order factor of BI. Internal consistency was acceptable, with moderate stability over 1 year and strong correlation with a brief inhibition subscale from a temperament questionnaire. Children who were rated by mothers and teachers as high BI took longer to initiate contact with a stranger, spoke less often and for shorter periods, and required more prompting to elicit speech compared with low-BI peers in a simulated stranger interaction task. Father report of BI was significantly associated with mean duration of speech and eye gaze. 相似文献
992.
David Chiszar Terrence Carter Leslie Knight Lorna Simonsen Shannon Taylor 《Learning & behavior》1976,4(3):273-278
Garter snakes (Thamnophis radix), hognose snakes (Heterodon platyrhinos), and rattlesnakes (Crotalus species) flick their tongues and crawl about in an open field containing no food or sexual (i.e., reproductive) odors. As Experiment I shows, the taxa differ reliably in both rate of tongue flicking and rate of locomotion. In Experiment II, garter snakes (Thamnophis radix) placed into an open field for 5 min showed more tongue flicking than snakes that were handled and placed directly back into their home cages, indicating that the first group was exploring the apparatus rather than responding only to handling. During Minutes 3 through 5 (Experiment III) in the open field, garter snakes emitted fewer tongue flicks than they did during the first minute, and after 20 min, the rate of tongue flicking was virtually zero. However, snakes were capable of responding to presentation of new objects and/or odors, indicating that the previous response decrement was not derived from effector fatigue but rather from some habituatory process. Experiment IV revealed that satiated snakes habituated more rapidly than hungry snakes during exploration of the open field. Hence, exploratory behavior in these snakes is at least partially under the control of the same factors which mediate food-related appetitive activities. 相似文献
993.
994.
995.
996.
997.
Lexical acquisition ability for aurally taught words was studied in fourthgrade children. Reading ability, intelligence, and working memory were evaluated as predictor factors in vocabulary learning. Reading ability was found to predict facility at learning the novel phonological sequences, while intelligence was the only factor which accounted for performance level for the semantic content of the words. The working memory measure, digit span, failed to make a significant contribution to either the phonological or semantic outcome measures. Examination of two subgroups of skilled and less-skilled readers indicated that less-skilled readers had more difficulty acquiring the phonological information for new words. No between-group differences were found in long-term retention or in the ability to provide definitions for the newly learned words. The findings suggest that the vocabulary deficits of less-skilled readers stem, at least in part, from difficulty establishing accurate phonological representations for new words. 相似文献
998.
Early interventionists seek to document the effectiveness of their efforts with children with developmental delays. In order to do so, they need to have available as many techniques as possible to ascertain a comprehensive view of the child's progress. One tool that has been used effectively in efficacy research, but has not been widely employed in program evaluation designs is the rate of change in development index. This article presents the rate of change in development index as a useful tool for early interventionists who are attempting to interpret and evaluate child progress. A model for the use of a rate of change index is described which uses the Proportional Change Index developed by Wolery (1983). The model is illustrated through a case study. Applications and limitations of the rate of change index are also discussed. 相似文献
999.
Three cases of whiplash shaking injury of infants are presented. All children presented with seizures and had minimal signs of external injury. Examination of the retina revealed extensive retinal hemorrhages. These were missed on initial examination and were only discovered after pupillary dilatation. The presence of these palecentered retinal hemorrhages suggested the diagnosis of child abuse and skeletal surveys and thorough social histories confirmed the diagnosis. Despite extensive retinal hemorrhages, computerized axial tomography (C.T.) scan showed minimal inter-hemispheric bleeding. In contrast to the "Battered Child Syndrome," all the findings in whiplash shaking syndrome of infants are subtle and demand an awareness, an index of suspicion and a thorough examination which may include extensive retinal examination following dilatation of the pupils. This latter examination is frequently not performed by family physicians and residents so that the syndrome may be missed. A fourth case is also discussed where shaking is admitted on initial presentation but said to be done for resuscitation. This poses an immense diagnostic dilemma to the pediatrician since in this case the child presented later with all the signs of physical abuse. 相似文献
1000.