全文获取类型
收费全文 | 20773篇 |
免费 | 35篇 |
国内免费 | 1篇 |
出版年
2023年 | 7篇 |
2022年 | 13篇 |
2021年 | 19篇 |
2020年 | 26篇 |
2019年 | 30篇 |
2018年 | 3511篇 |
2017年 | 2834篇 |
2016年 | 2271篇 |
2015年 | 202篇 |
2014年 | 86篇 |
2013年 | 101篇 |
2012年 | 565篇 |
2011年 | 2383篇 |
2010年 | 2518篇 |
2009年 | 1472篇 |
2008年 | 1700篇 |
2007年 | 2168篇 |
2006年 | 25篇 |
2005年 | 212篇 |
2004年 | 165篇 |
2003年 | 109篇 |
2002年 | 63篇 |
2001年 | 30篇 |
2000年 | 54篇 |
1999年 | 16篇 |
1998年 | 22篇 |
1997年 | 23篇 |
1996年 | 8篇 |
1994年 | 6篇 |
1993年 | 4篇 |
1990年 | 12篇 |
1989年 | 4篇 |
1986年 | 5篇 |
1983年 | 6篇 |
1982年 | 7篇 |
1981年 | 5篇 |
1976年 | 5篇 |
1975年 | 4篇 |
1974年 | 6篇 |
1973年 | 7篇 |
1971年 | 8篇 |
1969年 | 12篇 |
1968年 | 7篇 |
1967年 | 5篇 |
1964年 | 4篇 |
1961年 | 5篇 |
1960年 | 4篇 |
1958年 | 12篇 |
1955年 | 6篇 |
1953年 | 6篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
In the first part of this paper we review evidence suggesting that there exists a mechanism that selects input on the basis of its similarity to the required action. This response-based input selection differs from the more established space- and object-based input selection in that it is not constrained by the structure of the input. Our evidence suggests that the two-choice Stroop effect is caused by this response-based selection mechanism. By contrast, it is known that the flanker effect is determined by the space- and object- based selection mechanisms. We explore whether the conflict resolution of the Stroop and flanker tasks is different as well by embedding these two tasks in a PRP (Psychological Refractory Period) paradigm. We show that the Stroop and the PRP effects are additive whereas the flanker and the PRP effects are underadditive, suggesting that the processes in charge of the conflict resolution in the Stroop and the flanker tasks are indeed different. We discuss possible reasons for this difference, and discuss possible ways in which the response-based mechanism can be implemented in information processing models. 相似文献
72.
I present the scope andcharacteristics of Marx's interest in Russiaand review its evolution. Initially, Marx'sattitudes were marked by russophobia,pronounced anti-panslavism, assessments ofRussia as an outpost of European reaction andcounterrevolution, and even as the head of aconspiracy to block the world revolution. Withtime, however, Marx came to consider Russia asthe country in which the outbreak of theRevolution was most likely. In his research forsucessive volumes of Capital, he readRussian theoretical works by, among others, V.Bervi-Flerovskij and A. Koshelev. Marx'sattitudes to the anticipated peasant revolutionin Russia remained ambivalent; to a certaindegree he feared its occurrence suspecting thatit could take on an `asiatic' hue. 相似文献
73.
Numerous previous investigators have explained species differences in spatial memory performance in terms of differences
in foraging ecology. In three experiments we attempted to extend these findings by examining the extent to which the spatial
memory performance of echidnas (or "spiny anteaters") can be understood in terms of the spatio-temporal distribution of their
prey (ants and termites). This is a species and a foraging situation that have not been examined in this way before. Echidnas
were better able to learn to avoid a previously rewarding location (to "win-shift") than to learn to return to a previously
rewarding location (to "win-stay"), at short retention intervals, but were unable to learn either of these strategies at retention
intervals of 90 min. The short retention interval results support the ecological hypothesis, but the long retention interval
results do not.
Electronic Publication 相似文献
74.
75.
76.
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
77.
78.
79.
80.