全文获取类型
收费全文 | 2531篇 |
免费 | 75篇 |
国内免费 | 1篇 |
专业分类
2607篇 |
出版年
2021年 | 13篇 |
2020年 | 16篇 |
2019年 | 35篇 |
2018年 | 41篇 |
2017年 | 49篇 |
2016年 | 49篇 |
2015年 | 35篇 |
2014年 | 50篇 |
2013年 | 255篇 |
2012年 | 74篇 |
2011年 | 110篇 |
2010年 | 68篇 |
2009年 | 50篇 |
2008年 | 92篇 |
2007年 | 91篇 |
2006年 | 105篇 |
2005年 | 99篇 |
2004年 | 103篇 |
2003年 | 99篇 |
2002年 | 93篇 |
2001年 | 25篇 |
2000年 | 36篇 |
1999年 | 40篇 |
1998年 | 56篇 |
1997年 | 44篇 |
1996年 | 34篇 |
1995年 | 38篇 |
1994年 | 42篇 |
1993年 | 43篇 |
1992年 | 35篇 |
1991年 | 28篇 |
1990年 | 33篇 |
1989年 | 29篇 |
1988年 | 22篇 |
1987年 | 27篇 |
1986年 | 32篇 |
1985年 | 24篇 |
1984年 | 42篇 |
1983年 | 41篇 |
1982年 | 36篇 |
1981年 | 47篇 |
1980年 | 35篇 |
1979年 | 41篇 |
1978年 | 31篇 |
1977年 | 30篇 |
1976年 | 29篇 |
1975年 | 35篇 |
1974年 | 26篇 |
1973年 | 18篇 |
1972年 | 10篇 |
排序方式: 共有2607条查询结果,搜索用时 15 毫秒
981.
Human infants, just a few days of age, are known to prefer attractive human faces. We examined whether this preference is human-specific. Three- to 4-month-olds preferred attractive over unattractive domestic and wild cat (tiger) faces (Experiments 1 and 3). The preference was not observed when the faces were inverted, suggesting that it did not arise from low-level image differences (Experiments 2 and 3). In addition, the spontaneous preference for attractive tiger faces influenced performance in a recognition memory task involving attractive versus unattractive tiger face pairings (Experiment 4). The findings suggest that infant preference for attractive faces reflects the activity of general processing mechanisms rather than a specific adaptation to mate choice. 相似文献
982.
983.
We report a study that examines whether the presentation of irrelevant, ordinal information at central fixation interacts with the allocation of attention beyond fixation. Previous research has demonstrated that number perception influences the allocation of spatial attention, such that the presentation of a spatially nonpredictive number at fixation results in attention being allocated to the left when the central number is low (e.g., 1), and attention being allocated to the right when the central number is high (e.g., 9). Here, we examine whether this attentional SNARC effect (spatial numerical association of response codes) generalizes to other ordinal sequences: letters, days, and months. Though we replicate the attentional SNARC we find that this effect is number-specific, unless participants are required to process the cue in an order-relevant fashion. This discovery of number-specificity has important implications both for the functional separation between SNARC and attention-SNARC effects, as well as lending support to recent theories regarding the specificity of a shared neural architecture between numbers and visuospatial attention. 相似文献
984.
Foweather L McWhannell N Henaghan J Lees A Stratton G Batterham AM 《Perceptual and motor skills》2008,106(3):745-754
This exploratory study examined the effects of a 9-wk. after-school multiskills club on fundamental movement skill proficiency in 8- to 9-yr.-old children. Two schools were randomly assigned to either a control (n = 15 children) or multiskill club (n = 19 children) condition. The multiskill club received 18 coaching sessions designed to improve fundamental movement skills. The control group followed normal routines. 7 skills were assessed using process-oriented measures with video analysis. Participation in the multiskill club yielded significant improvements in proficiency at posttest only in static balance, while potentially practically important improvements were observed in performance of the catch, throw, and kick skills. The after-school multiskill club offered a viable opportunity for movement skill acquisition, but any such programme would need to run for a longer duration to assess whether this type of activity could benefit all skills. 相似文献
985.
Crane DK Hensarling RW Jung AP Sands CD Petrella JK 《Perceptual and motor skills》2008,106(3):958-962
The purpose of this study was to assess the effect of the color of light in a room on muscular strength and power. A convenience sample of 18 men (M age = 20.4 yr., SD = 1.2) performed a modified Wingate Anaerobic Cycle Test for muscular power and a hand grip strength test in each of the following conditions: red, blue, and white (neutral) ambient light. A repeated-measures multivariate analysis of variance indicated that average muscular power was significantly higher when performing the test in the room with red light compared to rooms lit with blue light or white light. The results also indicated that grip strength was significantly higher in the room lit with white light as compared to the room lit with blue light. 相似文献
986.
Observers are inaccurate when judging the gaze direction of eyes shown in negative rather than positive polarity. On the basis of this polarity effect, it has been proposed that gaze is perceived as directed from the dark part of the eye. Our experiment investigated whether direction judgments simply follow this heuristic, as has been suggested. Participants judged the gaze direction of eyes shown at different eccentricities in positive or negative polarity. The error pattern revealed that most errors were incorrect "straight" judgments, suggesting that judgments do not merely follow the heuristic "the dark part does the looking." We suggest that gaze judgments are based on the outcome of a competition between gaze direction signals: Whereas luminance cues may indicate that gaze is directed from the dark part of the eye, geometric cues may indicate the opposite. This interpretation is supported by reduced overall error rates, and fewer incorrect "straight" responses, for more extreme gaze directions. 相似文献
987.
Alan Carter 《The Philosophical quarterly》2003,53(211):161-180
What might be termed 'the problem of morality' concerns how freedom–restricting principles may be justified, given that we value our freedom. Perhaps an answer can be found in freedom itself. For if the most obvious reason for rejecting moral demands is that they invade one's personal freedom, then the price of freedom from invasive demands that others would otherwise make may well require everyone accepting freedom in general, say, as a value that provides sufficient reason for adhering to principles that serve to maximize, or at least safeguard, freedom in general. But then it is precisely such a value, freedom in general, which can be argued to ground an adequate moral system. Hence whereas the value of freedom appears at first sight to pose problems for moral systems, it can be employed to ground a certain variety of them. 相似文献
988.
Mass murder involves the slaughter of four or more victims by one or a few assailants within a single event, lasting but a few minutes or as long as several hours. More than just arbitrary, using this minimum body count—as opposed to a two- or three-victim threshold suggested by others (e.g., Ressler et al., 1988, Holmes and Holmes, 2001)—helps to distinguish multiple killing from homicide generally. Moreover, by restricting our attention to acts committed by one or a few offenders, our working definition of multiple homicide also excludes highly organized or institutionalized killings (e.g., war crimes and large-scale acts of political terrorism as well as certain acts of highly organized crime rings). Although state-sponsored killings are important in their own right, they may be better explained through the theories and methods of political science than criminology. Thus, for example, the definition of multiple homicide would include the crimes committed by Charles Manson and his followers, but not those of Hitler's Third Reich, or the 9/11 terrorists, despite some similarities in the operations of authority. 相似文献
989.
Alan J Lambert Alison L Chasteen Lara Shaffer 《Journal of experimental social psychology》2004,40(6):708-722
We propose and test two alternative hypotheses bearing on the dual roles of group variability and typicality when people form impressions of single category members. The latitude of acceptance hypothesis suggests that a wider range of individual group members are likely to be seen as good-fitting members (i.e., typical) if the group is heterogeneous, thereby increasing the extent to which stereotypical attitudes are used as a basis for responding to these persons. In contrast, the typicality-functionality hypothesis suggests that typicality plays different roles depending on group variability. This view suggests that typicality plays the “gatekeeper function” as postulated by Fiske and Neuberg (1990) when the group is homogeneous, but not when it is heterogeneous. Across two studies, stronger support was found for the typicality-functionality hypothesis. Implications for the extant literature on category-based processing are discussed. 相似文献
990.
W. Alan Smith 《Teaching Theology & Religion》2004,7(1):20-29
Abstract. This article explores the art form of dance as a metaphor for the teaching of theology. Employing the work of Maria Harris, the author contends that there are seven elements of dance than can serve as metaphors for teachers of theology: preparation, rhythm, movement, expectancy, response, embodiment, and performance. Each dance element is described in detail, and the correlations between specific elements of dance and how one might teach theology are presented as possible methodological steps for teaching. 相似文献