全文获取类型
收费全文 | 21718篇 |
免费 | 70篇 |
出版年
2023年 | 5篇 |
2021年 | 10篇 |
2020年 | 24篇 |
2019年 | 45篇 |
2018年 | 3514篇 |
2017年 | 2847篇 |
2016年 | 2278篇 |
2015年 | 215篇 |
2014年 | 105篇 |
2013年 | 230篇 |
2012年 | 610篇 |
2011年 | 2440篇 |
2010年 | 2551篇 |
2009年 | 1499篇 |
2008年 | 1755篇 |
2007年 | 2213篇 |
2006年 | 94篇 |
2005年 | 254篇 |
2004年 | 206篇 |
2003年 | 153篇 |
2002年 | 104篇 |
2001年 | 48篇 |
2000年 | 74篇 |
1999年 | 36篇 |
1998年 | 52篇 |
1997年 | 27篇 |
1996年 | 37篇 |
1995年 | 18篇 |
1994年 | 17篇 |
1993年 | 17篇 |
1992年 | 22篇 |
1991年 | 22篇 |
1990年 | 23篇 |
1989年 | 11篇 |
1988年 | 12篇 |
1987年 | 13篇 |
1986年 | 16篇 |
1985年 | 17篇 |
1984年 | 19篇 |
1983年 | 12篇 |
1982年 | 17篇 |
1981年 | 13篇 |
1980年 | 19篇 |
1979年 | 9篇 |
1978年 | 15篇 |
1977年 | 8篇 |
1976年 | 6篇 |
1975年 | 8篇 |
1974年 | 7篇 |
1973年 | 12篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
An "aha" effect in memory was first reported by Auble, Franks, and Soraci (1979). They demonstrated that recall was greater for sentences that were initially incomprehensible but which were eventually comprehended, as compared with sentences that were understood from the outset. The present studies extend this "aha" effect to memory for pictorial stimuli. In Experiment 1, a recall advantage for pictures encoded by connecting the dots as compared with those encoded by tracing or visual scanning occurred only in the absence of foreknowledge of the picture (i.e., an "aha" effect). In Experiment 2, we replicated this finding and obtained evidence that conceptually based, verbal foreknowledge does not function in a similar manner as does pictorial foreknowledge in suppressing the "aha" recall advantage. These results place important constraints on previous research on generation effects for visual stimuli and attest to the cross-modal generalizability of the "aha" effect. 相似文献
122.
In thecandle problem (Duncker, 1945), subjects must attach a candle to a vertical surface, using only a box of tacks and a book of matches. Subjects
exhibitfunctional fixedness by failing, or being slow, to make use of one object (the tack box) as a support, rather than as a container, in their solutions.
This failure to produce alternate functions is measured against improved performance when the tack box is presented empty
rather than full of tacks (i.e., not preutilized as a container). Using an analogous task, we show that functional fixedness
can be demonstrated in older children (6- and 7-year-olds); they are significantly slower to use a box as a support when its
containment function has been demonstrated than when it has not. However, younger children (5-year-olds) are immune to this
effect, showing no advantage when the standard function is not demonstrated. Moreover, their performance under conditions
of preutilization is better than that of both older groups. These results are interpreted in terms of children’s developing
intuitions about function and the effects of past experience on problem solving. 相似文献
123.
Robert E. Lee Kathleen Burns Jager Jason B. Whiting Catherine T. Kwantes 《Contemporary Family Therapy》2000,22(1):81-90
Confirmatory factor analysis and regression analyses of the Beavers Interactional Scales did not appear to support the model offered by its developers, namely, several specified family attributes contributing respectively to two global factors of Family Competence and Family Style. Moreover, regression analysis indicated that only three of 12 items predicted raters' assessments of Global Family Health, and one of seven items predicted Global Family Style. Individuals interested in the family dynamic centripetal/centrifugal might best think of that as a unitary entity and rate it accordingly. 相似文献
124.
125.
Deane-Peter Baker 《International Journal for Philosophy of Religion》2005,57(2):77-103
Alvin Plantingas Warranted Christian Belief is without questionone of the central texts of the Reformed epistemology movement. Critiques of Plantingas defence have been both multiple and varied. As varied as these responses are, however, it is my contention that many of them amount to the same thing. It is the purpose of this paper to offer an overview of the main lines of attack that have been directed as Plantingas project, and thereafter to show how many, if not most, of these objections can be understood as versions or aspects of the same criticism, what I call the Inadequacy Thesis. 相似文献
126.
A range of possible predictors of arithmetic and reading were assessed in a large sample (N=162) of children between ages 7 years 5 months and 10 years 4 months. A confirmatory factor analysis of the predictors revealed a good fit to a model consisting of four latent variables (verbal ability, nonverbal ability, search speed, and phonological memory) and two manifest variables (digit comparison and phoneme deletion). A path analysis showed that digit comparison and verbal ability were unique predictors of variations in arithmetic skills, whereas phoneme deletion and verbal ability were unique predictors of variations in reading skills. These results confirm earlier findings that phoneme deletion ability appears to be a critical foundation for learning to read (decode). In addition, variations in the speed of accessing numerical quantity information appear to be a critical foundation for the development of arithmetic skills. 相似文献
127.
The authors of this essay suggest that the field of bioethics and Christian theology have a great deal to offer to each other. The authors first argue that representatives from both fields must first make sure that they fully and correctly represent their respective position. In other words, scientists, ethicists, and theologians alike must make sure that they present their fields and not use their knowledge merely for personal gain at the stake of misguiding people. Once this is established, the authors then proceed to show the intimate relationship between Christianity and medicine that has existed throughout the ages. It is a call for a continuation of such a relationship that the authors suggest between bioethics and theology. Through an integration of bioethics and Christian theology, both scientists/physicians and theologians are able to gain greater insight into the human person—a focus in both fields. 相似文献
128.
Objectives: To understand the impact of physicians and patients religious/spiritual orientation on discussions of spiritual issues. Methods: We performed semi-structured interviews of 10 Missouri family physicians and 10 patients of these physicians, selecting subjects nonrandomly to represent a range of demographic factors, practice types, and chronic or terminal illness. We coded and evaluated transcribed interviews for themes. Results: Respondents expressed that similar belief systems facilitate patient–physician spiritual interactions and bring confidence to their relationships. Those holding dissimilar faiths noted limited ability to address spiritual questions directly. They cited significant barriers to spiritual interaction but considered that ecumenism, use of patient-centered care, and negotiation skills lessen these barriers. Conclusions: Our respondents view spirituality similarly to other aspects of the physician–patient relationship involving differing viewpoints. Where discordance exists, cross-cultural, patient-centered, diplomatic approaches facilitate spiritual discussions. 相似文献
129.
Much attention has been directed toward understanding the impact having a multiracial background has on psychological well-being and adjustment. Past psychological research has focused on the challenges multiracial individuals confront in defining a racial identity. The implication is that these challenges lead to outcomes that are psychologically detrimental. However, evidence to support this assertion is mixed. The authors review qualitative and quantitative empirical research examining multiracial individuals' identity development, depression, problem behaviors, peer relationships, school performance, and self-esteem, finding support for detrimental outcomes only in studies sampling clinical populations. Studies on nonclinical samples find that multiracial individuals tend to be just as well-adjusted as their monoracial peers on most psychological outcomes. Earlier assertions of maladjustment may have been due to reliance on qualitative research that sampled clinical populations. Other implications and future research are discussed. 相似文献
130.
Several investigators have claimed over the past decade that working memory (WM) and general intelligence (g) are identical, or nearly identical, constructs, from an individual-differences perspective. Although memory measures are commonly included in intelligence tests, and memory abilities are included in theories of intelligence, the identity between WM and intelligence has not been evaluated comprehensively. The authors conducted a meta-analysis of 86 samples that relate WM to intelligence. The average correlation between true-score estimates of WM and g is substantially less than unity (p=.479). The authors also focus on the distinction between short-term memory and WM with respect to intelligence with a supplemental meta-analysis. The authors discuss how consideration of psychometric and theoretical perspectives better informs the discussion of WM-intelligence relations. 相似文献