全文获取类型
收费全文 | 7013篇 |
免费 | 955篇 |
国内免费 | 411篇 |
专业分类
8379篇 |
出版年
2024年 | 32篇 |
2023年 | 200篇 |
2022年 | 130篇 |
2021年 | 207篇 |
2020年 | 360篇 |
2019年 | 439篇 |
2018年 | 332篇 |
2017年 | 385篇 |
2016年 | 360篇 |
2015年 | 285篇 |
2014年 | 330篇 |
2013年 | 1155篇 |
2012年 | 226篇 |
2011年 | 294篇 |
2010年 | 231篇 |
2009年 | 292篇 |
2008年 | 331篇 |
2007年 | 295篇 |
2006年 | 315篇 |
2005年 | 286篇 |
2004年 | 230篇 |
2003年 | 213篇 |
2002年 | 194篇 |
2001年 | 124篇 |
2000年 | 134篇 |
1999年 | 89篇 |
1998年 | 83篇 |
1997年 | 54篇 |
1996年 | 79篇 |
1995年 | 66篇 |
1994年 | 63篇 |
1993年 | 42篇 |
1992年 | 51篇 |
1991年 | 11篇 |
1990年 | 17篇 |
1989年 | 21篇 |
1988年 | 15篇 |
1987年 | 14篇 |
1986年 | 15篇 |
1985年 | 51篇 |
1984年 | 35篇 |
1983年 | 29篇 |
1982年 | 26篇 |
1981年 | 36篇 |
1980年 | 29篇 |
1979年 | 32篇 |
1978年 | 28篇 |
1977年 | 50篇 |
1976年 | 22篇 |
1975年 | 23篇 |
排序方式: 共有8379条查询结果,搜索用时 15 毫秒
31.
Culture wars: American moral divisions across the adult lifespan 总被引:1,自引:0,他引:1
Lene Arnett Jensen 《Journal of Adult Development》1997,4(2):107-121
Sociologists have argued that the public moral debate in contemporary America is characterized by a “culture war,” pitting
“orthodox” and “progressivist” groups against one another (Hunter, 1991). This study addressed whether the culture war is
evident in the moral thinking of ordinary Americans, and whether age-related patterns exist. Sixty fundamentalist Baptists
(orthodox) and 60 mainline Baptists (progressivist) evaluated and reasoned about moral issues such as divorce and abortion.
Each group was divided evenly into three age groups copsisting of young, midlife, and older adults. Moral reasoning was analyzed
in terms of Shweder's (1990) ethics of autonomy, community, and divinity. Within all three age groups, progressivists used
the ethic of, autonomy more than orthodox participants. Orthodox participants used the ethic of divinity more than progressivists.
Orthodox and progressivist groups did not differ much in their use of the ethic, of community. Very few age group differences
were found within the orthodox and progressivist groups. It is concluded that morality is conceived of in markedly different
wasy by orthodox and progressivist groups, and that these conceptions are consistent across age groups. 相似文献
32.
A review of the literature from 1985 to 1995 on school-based mental health services for children was conducted using a computerized data-base search. Of the 5,046 references initially identified, 228 were program evaluations. Three inclusion criteria were applied to those studies: use of random assignment to the intervention; inclusion of a control group; and use of standardized outcome measures. Only 16 studies met these criteria. Three types of interventions were found to have empirical support for their effectiveness, although some of the evidence was mixed: cognitive-behavioral therapy, social skills training, and teacher consultation. The studies are discussed with reference to the sample, targeted problem, implementation, and types of outcomes assessed, using a comprehensive model of outcome domains, called the SFCES model. Future studies of school-based mental health services should (a) investigate the effectiveness of these interventions with a wider range of children's psychiatric disorders; (b) broaden the range of outcomes to include variables related to service placements and family perspectives; (c) examine the combined effectiveness of these empirically-validated interventions; and (d) evaluate the impact of these services when linked to home-based interventions. 相似文献
33.
Levitt M 《Science and engineering ethics》1997,3(3):305-315
Empirical research with young people in Finland, Germany, Spain and Britain was carried out as part of the BIOCULT project
funded by the European Union. The project focused on their attitudes to biotechnology and, in particular, the formation of
arguments about risk and safety. This paper looks at the responses of 14–18 year olds to a story about the so called anti-obesity
gene, in the form of advice to a friend who is taking it. The majority advised against taking it with some differences by
gender and country. Most reservations were on grounds of safety and the feeling that ‘natural’ ways to lose weight are better:
A minority questioned the idea of striving for a ‘perfect’ body. The types of arguments used by the young people reveal underlying
perspectives on the place of human beings in the world and whether they have a right to manipulate nature and their own bodies.
Marie Levitt is a sociologist with research interests in attitudes and values in relation to biotechnology, health and religion. 相似文献
34.
婴儿共同注意能力的发展 总被引:5,自引:0,他引:5
本研究采用严格的实验室测验法,从年龄趋势、学习能力、性别差异三方面考察了8~11个月婴儿共同注意能力的发展。结果表明:1)婴儿的共同注意力在8~11个月间逐步提高,9个月左右出现显著的发展性变化,但1岁以前,该能力的发展水平都较低;2)就共同注意而言,婴儿具有从练习经验中学习的可能性,且学习能力存在年龄差异,8个月的婴儿基本不能从练习中受益,而8个月以上的其他三组婴儿在练习后共同注意水平都有不同程度的提高;3)总体而言,女婴共同注意能力的发展水平显著地高于男婴。 相似文献
35.
Gran Carlsson 《Scandinavian journal of psychology》1997,38(4):265-273
A list-learning paradigm was used to study learning and memory of verbal and figurative material in children with right versus left-sided hemiplegic cerebral palsy. Thirty-one children with right (n=18), or left (n=13) congenital hemiplegia were compared with normal controls (n=19). All children had normal intelligence (IQ>80), and were attending standard schools. The inclusion criteria for the two hemiplegic groups were; no epilepsy, no hearing or visual impairments, and a mild to moderate hemiparesis. The aim of this study was to explore material-specific (words and drawings) differences in the acquisition, recall and serial position effects in children with an early unilateral brain lesion. The left-hemisphere impaired (i.e. right hemiplegia) group showed impaired acquisition for drawings, as compared with the normal controls. There was also a material-specific difference in the serial position effect for all three groups. Learning of words followed the primacy principle, whereas the learning of drawings followed the recency principle. There were no group-differences in delayed-recall (i.e. long-term memory) for either words or drawings. The results are discussed in terms of acquisition and retention of verbal and figurative materials in relation to lesion side and size. 相似文献
36.
This study examined how preschool inattention-hyperactivity is related to elementary school reading achievement. Prereading skills were hypothesized to be a link between them. This link was explored using longitudinal data on 105 low-socioeconomic-status (SES) children's inattentive-hyperactive behavior and prereading skills in Head Start and in kindergarten and their inattentive-hyperactive behavior and reading skills in first grade. A model of this relationship was tested using structural equation modeling. The results failed to show a significant path between inattention-hyperactivity and prereading skills at both the Head Start and kindergarten levels. A significant path was found between first grade inattention-hyperactivity and reading skills, confirming that the strong relationship between inattention-hyperactivity and poor reading achievement commonly found in children from other SES levels was also significant in this low-SES sample. Strong relationships were found between pre-reading skills and reading skills, as well as among hyperactivity levels at the three grades. The issue of the direction of the path of influence between attention-behavior and reading achievement is addressed briefly; however, the results indicate that further longitudinal work is necessary to resolve this issue. 相似文献
37.
Adrianna Amari Nancy C. Grace Wayne W. Fisher 《Journal of applied behavior analysis》1995,28(3):341-342
The ketogenic diet, a treatment for intractable epilepsy, is rarely initiated because it requires strict compliance with a diet that is perceived to be unpalatable. In a case study of a 15-year-old girl with uncontrolled epilepsy, we used a stimulus-choice procedure to assess relative preferences of 33 foods from the diet and to develop two treatments based on Premack's principle. The results of a multielement analysis showed that both treatments increased dietary compliance. Compliance was maintained with generalization of treatment across settings, and was associated with a 40% reduction in seizures. 相似文献
38.
39.
在汉语中,副词是一种比较独特的词类,它没有具体形象的物体可作为理解支柱,因而儿童对它的掌握较晚。在各类副词中,5、6岁儿童对范围副词的理解最佳,时间副词次之,程度副词最差。三者的差异均有非常显著性意义。即使在每一类副词中,由于儿童概念发展的不均衡性,掌握的顺序也有先后。 相似文献
40.
Peter M. Newton 《Journal of Adult Development》1994,1(3):135-147
I offer some reminiscences occasioned by the death of Daniel Levinson, a modern pioneer in the study of the human life cycle. I clarify three controversial aspects of Levinson's theory—its universality, the role of critical life events, and the place of relationships—as well as briefly foreshadow findings from his forthcoming book on women. I show that relationships to people, enterprises, and social institutions are the stuff out of which the individual life structure—Levinson's central concept—is formed. Levinson's dream was of a society in which the developmental needs of adults were better understood and met so that they could more generatively fill their roles in the institutions upon which the young depend. He thought this essential to the evolution of a society that would be both more competent and more humane. In this dream, which was a product of his own difficult mid-life transition and a measure of the success he achieved in integrating its polarities, Levinson united a warm, scientific interest in others with an affectionate curiosity about nature. 相似文献