全文获取类型
收费全文 | 193009篇 |
免费 | 8461篇 |
国内免费 | 157篇 |
专业分类
201627篇 |
出版年
2020年 | 2801篇 |
2019年 | 3458篇 |
2018年 | 3868篇 |
2017年 | 4219篇 |
2016年 | 4850篇 |
2015年 | 3957篇 |
2014年 | 4817篇 |
2013年 | 23503篇 |
2012年 | 5332篇 |
2011年 | 4702篇 |
2010年 | 4219篇 |
2009年 | 4956篇 |
2008年 | 4734篇 |
2007年 | 4325篇 |
2006年 | 4696篇 |
2005年 | 4527篇 |
2004年 | 4080篇 |
2003年 | 3678篇 |
2002年 | 3442篇 |
2001年 | 4419篇 |
2000年 | 4216篇 |
1999年 | 3825篇 |
1998年 | 2940篇 |
1997年 | 2732篇 |
1996年 | 2644篇 |
1995年 | 2478篇 |
1994年 | 2434篇 |
1993年 | 2397篇 |
1992年 | 3152篇 |
1991年 | 2933篇 |
1990年 | 2800篇 |
1989年 | 2695篇 |
1988年 | 2637篇 |
1987年 | 2602篇 |
1986年 | 2609篇 |
1985年 | 2891篇 |
1984年 | 2784篇 |
1983年 | 2516篇 |
1982年 | 2441篇 |
1981年 | 2396篇 |
1980年 | 2259篇 |
1979年 | 2536篇 |
1978年 | 2352篇 |
1977年 | 2284篇 |
1976年 | 2090篇 |
1975年 | 2266篇 |
1974年 | 2377篇 |
1973年 | 2259篇 |
1972年 | 1825篇 |
1971年 | 1749篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
801.
The past fifteen years have seen the development of a considerable research literature on the social psychology of procedural justice (see Lind & Tyler, 1988, for a review). Procedural justice research reveals some serious shortcomings in the exchange theories that have traditionally dominated Western analyses of the social psychology of groups, and in so doing, the procedural justice literature has important ramifications for cross-cultural psychology. Results from a number of studies conducted in the United States and Western Europe show that individualistic, self-interest based models of human behaviour are insufficient to explain procedural justice phenomena. Instead, procedural justice effects frequently reveal strong group-oriented concerns and motivations even in cultural contexts generally thought to be characterized by individualistic orientations. The research literature also shows that if a group's procedures are judged to be fair, people are more likely to show group-oriented behaviour and to hold more favourable attitudes toward the group and its leaders. These findings have led to the development of a theory of justice judgments—the Lind and Tyler group-value theory—which is based on group norms and relations rather than on social exchange theory. We describe a general model of social behaviour that integrates group- and individually-oriented behaviour, and we discuss the implications of the model for social and cross-cultural psychology. 相似文献
802.
This study examined Protestant Work Ethic (PWE) and Just World Beliefs (JWB) in Great Britain and India. Secondary school children, university students and adults completed seven PWE questionnaires and the JWB questionnaire. A three-way (sex × occupational status × nationality) ANOVA showed highly significant main effects, particularly for nationality, but few significant interactions. Generally females more than males, Indians more than Britons, and schoolchildren more than adults endorse the PWE and JWB. Possible experimental artifacts and moderator variables are considered along with the possibility that genuine cultural differences were found. These results are discussed in terms of the relevant literature on cross-cultural studies of the PWE and BJW. 相似文献
803.
804.
Twenty treated and 18 untreated spider phobics were exposed to a series of 72 slides. Three different categories of slides were used: phobia-relevant slides (spiders), alternative fear-relevant slides (weapons), and neutral slides (flowers). Slides were randomly paired with either a shock, a tone, or nothing at all. Despite the absence of a systematic correlation between slides and outcomes, untreated phobics strongly overestimated the covariation between spider slides and shock. Treated phobics did not show a covariation bias, suggesting that such bias can be modulated by behavioral treatment. In addition, untreated subjects were more confident about their contingency estimates than were treated subjects. The present results fit with earlier studies. 相似文献
805.
The present study explores how stimulus variability in speech production influences the 2-month-old infant's perception and memory for speech sounds. Experiment 1 focuses on the consequences of talker variability for the infant's ability to detect differences between speech sounds. When tested with high-amplitude sucking (HAS) procedure, infants who listened to versions of a syllable, such as [symbol: see text], produced by 6 male and 6 female talkers, detected a change to another syllable, such as [symbol: see text], uttered by the same group of talkers. In fact, infants exposed to multiple talkers performed as well as other infants who heard utterances produced by only a single talker. Moreover, other results showed that infants discriminate the voices of the individual talkers, although discriminating one mixed group of talkers (3 males and 3 females) from another is too difficult for them. Experiment 2 explored the consequences of talker variability on infants' memory for speech sounds. The HAS procedure was modified by introducing a 2-min delay period between the familiarization and test phases of the experiment. Talker variability impeded infants' encoding of speech sounds. Infants who heard versions of the same syllable produced by 12 different talkers did not detect a change to a new syllable produced by the same talkers after the delay period. However, infants who heard the same syllable produced by a single talker were able to detect the phonetic change after the delay. Finally, although infants who heard productions from a single talker retained information about the phonetic structure of the syllable during the delay, they apparently did not retain information about the identity of the talker. Experiment 3 reduced the range of variability across talkers and investigated whether variability interferes with retention of all speech information. Although reducing the range of variability did not lead to retention of phonetic details, infants did recognize a change in the gender of the talkers' voices (from male to female or vice versa) after a 2-min delay. Two additional experiments explored the consequences of limiting the variability to a single talker. In Experiment 4, with an immediate testing procedure, infants exposed to 12 different tokens of one syllable produced by the same talker discriminated these from 12 tokens of another syllable.(ABSTRACT TRUNCATED AT 400 WORDS) 相似文献
806.
807.
808.
809.
810.
To teach conservation to mildly retarded, preoperational preadolescents (9 to 12 years old), a number-representational system was used to mediate the invariance of quantity as part of "equality-rule" training. Before viewing a perceptually misleading configuration of either two equal quantities or two unequal quantities entailing the dimensions of number or length, participants learned that equality involved the assignment of two identical numbers and inequality the assignment of two different numbers. These numbers were then applied to the actual quantities and became the basis for rule statements that were rehearsed, memorized, and subject-generated each time the quantities were transformed into a new configuration. Following equality training, correct judgments and verbal justifications of conservation were high (M greater than or equal to 85%) during both immediate and delayed post-tests and for near-generalization (number and length) and far-generalization (weight, liquid substance, and solid substance) tasks. In contrast, the post-test levels of comparable participants given learning-set (LS) training, LS plus verbal-rule training (a combination of statements about identity, negation, and compensation), or no training at all were substantially and significantly lower. Equality training is of theoretical and practical interest because of its potential to teach a symbolic representational rule that directly and meaningfully articulates the quantitative properties of objects and counteracts the overreliance on task-specific and faulty perceptual cues inherent in the conservation task. 相似文献