全文获取类型
收费全文 | 10558篇 |
免费 | 190篇 |
国内免费 | 190篇 |
专业分类
10938篇 |
出版年
2017年 | 27篇 |
2016年 | 26篇 |
2015年 | 37篇 |
2014年 | 29篇 |
2013年 | 36篇 |
2012年 | 958篇 |
2011年 | 1060篇 |
2010年 | 272篇 |
2009年 | 151篇 |
2008年 | 835篇 |
2007年 | 808篇 |
2006年 | 786篇 |
2005年 | 610篇 |
2004年 | 575篇 |
2003年 | 510篇 |
2002年 | 472篇 |
2001年 | 318篇 |
2000年 | 371篇 |
1999年 | 178篇 |
1998年 | 77篇 |
1997年 | 28篇 |
1996年 | 54篇 |
1995年 | 38篇 |
1994年 | 79篇 |
1993年 | 90篇 |
1992年 | 99篇 |
1991年 | 114篇 |
1990年 | 95篇 |
1989年 | 97篇 |
1988年 | 103篇 |
1987年 | 122篇 |
1986年 | 89篇 |
1985年 | 114篇 |
1984年 | 113篇 |
1983年 | 138篇 |
1982年 | 94篇 |
1981年 | 84篇 |
1980年 | 76篇 |
1979年 | 84篇 |
1978年 | 74篇 |
1966年 | 50篇 |
1965年 | 131篇 |
1964年 | 106篇 |
1963年 | 126篇 |
1962年 | 54篇 |
1958年 | 104篇 |
1957年 | 94篇 |
1956年 | 58篇 |
1955年 | 34篇 |
1952年 | 27篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
The present two‐wave longitudinal study addressed the role of affective empathy and parental support in aggressive and delinquent behavior in a sample of 323 adolescents (158 boys, 165 girls). Self‐report questionnaires were used to assess affective empathy, perceived support from parents, delinquency, and aggression. Guided by theories on children's differential susceptibility to socialization, we expected adolescents with different levels of empathy to vary in their responsiveness to parental support. In agreement with our hypothesis, empathy moderated the relation of perceived parental support with aggressive and delinquent behavior. Controlling for the effect of gender and for the stability of aggression and delinquency, higher perceived parental support was predictive of lower levels of aggression at age 15, but only for adolescents high in empathy. Remarkably, adolescents low in empathy not only appeared to benefit less from parental support, but even showed more aggression and delinquency at age 15 when they perceived their parents to be more supportive at age 14. Aggr. Behav. 38:368‐377, 2012. © 2012 Wiley Periodicals, Inc. 相似文献
962.
Gabay S Chica AB Charras P Funes MJ Henik A 《Journal of experimental psychology. Human perception and performance》2012,38(1):42-52
Inhibition of return (IOR) is modulated by task set and appears later in discrimination tasks than in detection tasks. Several hypotheses have been suggested to account for this difference. We tested three of these hypotheses in two experiments by examining the influence of cue and target level of processing on the onset of IOR. In the first experiment, participants were required to respond to both the cue and target. The pattern of results showed that deeper processing of the cue or target advanced the onset of IOR. In the second experiment, participants were not required to respond to the cue and a reverse pattern of results emerged, which replicated the general findings in cuing tasks. We conclude that in more-demanding tasks, an additional process slows down the processing of a nonpredictive cue in order to enhance the processing of the target. 相似文献
963.
Morey RD Morey CC Brisson B Tremblay S 《Journal of experimental psychology. Human perception and performance》2012,38(4):1069-1072
It is known that visual working memory capacity is limited, but the nature of this limit remains a subject of controversy. Increasingly, two factors are thought to limit visual memory: an object-based limit associated with so-called "slots" models, and an information-based limit associated with resource models. Recently, Barton, Ester, and Awh (2009) introduced a measure of mnemonic resolution, which they dubbed c. We show here that c is critically flawed, and cannot be interpreted as a measure of resolution. We recommend strongly against its use and interpretation, and suggest alternatives approaches for researchers who want to explore mnemonic resolution. 相似文献
964.
Al-Aidroos N Emrich SM Ferber S Pratt J 《Journal of experimental psychology. Human perception and performance》2012,38(3):643-663
In four experiments we assessed whether visual working memory (VWM) maintains a record of previously processed visual information, allowing old information to be inhibited, and new information to be prioritized. Specifically, we evaluated whether VWM contributes to the inhibition (i.e., visual marking) of previewed distractors in a preview search. We evaluated this proposal by testing three predictions. First, Experiments 1 and 2 demonstrate that preview inhibition is more effective when the number of previewed distractors is below VWM capacity than above; an effect that can only be observed at small preview set sizes (Experiment 2A) and when observers are allowed to move their eyes freely (Experiment 2B). Second, Experiment 3 shows that, when quantified as the number of inhibited distractors, the magnitude of the preview effect is stable across different search difficulties. Third, Experiment 4 demonstrates that individual differences in preview inhibition are correlated with individual differences in VWM capacity. These findings provide converging evidence that VWM supports the inhibition of previewed distractors. More generally, these findings demonstrate how VWM contributes to the efficiency of human visual information processing--VWM prioritizes new information by inhibiting old information from being reselected for attention. 相似文献
965.
People often show a preference for information that confirms their attitudes and beliefs, and this tendency is reduced for opinions that are not held with conviction. The present study shows that both decided and undecided individuals show a tendency to selectively expose themselves to confirmatory information, albeit with different antecedents and consequences. Whereas selective exposure in decided participants was predicted by conscious beliefs and not by automatic associations, selective exposure in undecided participants was predicted by automatic associations and not by conscious beliefs. Moreover, selective exposure led undecided participants to adopt conscious beliefs that were in line with their preexisting automatic associations. Conversely, for decided participants, selective exposure shifted automatic associations in a direction that was in line with their preexisting conscious beliefs. Implications for decision making and mutual influences of automatic associations and conscious beliefs in attitude change are discussed. 相似文献
966.
Three experiments tested whether and when exposure to counterstereotypic ingroup members enhances women's implicit leadership self-concept. Participants read about professional women leaders framed as similar to versus different from most women (Experiment 1) or having the same versus different collegiate background as participants (Experiment 3). Experiment 2 manipulated similarity by giving false feedback about participants' similarity to women leaders. In all cases, seeing women leaders reduced implicit self-stereotyping relative to controls but only when they were portrayed as similar to one's ingroup (Experiment 1) and oneself (Experiments 2-3). Leaders portrayed as dissimilar either had no effect on self-beliefs (Experiment 1 and 3) or increased implicit self-stereotyping (Experiment 2). Dissimilar leaders also deflated participants' career goals and explicit leadership beliefs (Experiment 3). Finally, implicit self-beliefs became less stereotypic regardless of whether women believed the similarity feedback, but explicit self-beliefs changed only when they believed the feedback to be true (Experiment 2). 相似文献
967.
The happiness that comes from a particular success or change in fortune abates with time. The Hedonic Adaptation Prevention (HAP) model specifies two routes by which the well-being gains derived from a positive life change are eroded--the first involving bottom-up processes (i.e., declining positive emotions generated by the positive change) and the second involving top-down processes (i.e., increased aspirations for even more positivity). The model also specifies two moderators that can forestall these processes--continued appreciation of the original life change and continued variety in change-related experiences. The authors formally tested the predictions of the HAP model in a 3-month three-wave longitudinal study of 481 students. Temporal path analyses and moderated regression analyses provided good support for the model. Implications for the stability of well-being, the feasibility of "the pursuit of happiness," and the appeal of overconsumption are discussed. 相似文献
968.
Kanazawa S 《Personality & social psychology bulletin》2012,38(9):1157-1164
The analysis of the National Child Development Study in the United Kingdom (n = 17,419) replicates some earlier findings and shows that genuine within-family data are not necessary to make the apparent birth-order effect on intelligence disappear. Birth order is not associated with intelligence in between-family data once the number of siblings is statistically controlled. The analyses support the admixture hypothesis, which avers that the apparent birth-order effect on intelligence is an artifact of family size, and cast doubt on the confluence and resource dilution models, both of which claim that birth order has a causal influence on children's cognitive development. The analyses suggest that birth order has no genuine causal effect on general intelligence. 相似文献
969.
We investigated age-related differences in finger coordination during rotational hand actions. Two hypotheses based on earlier studies were tested: higher safety margins and lower synergy indices were expected in the elderly. Young and elderly subjects held a handle instrumented with five six-component force sensors and performed discrete accurate pronation and supination movements. The weight of the system was counterbalanced with another load. Indices of synergies stabilizing salient performance variables, such as total normal force, total tangential force, moments produced by these forces, and total moment of force were computed at two levels of a hypothetical control hierarchy, at the virtual finger-thumb level and at the individual finger level. At each level, synergy indices reflected the normalized difference between the sum of the variances of elemental variables and variance of their combined output, both computed at comparable phases over repetitive trials. The elderly group performed the task slower and showed lower safety margins for the thumb during the rotation phase. Overall, the synergy indices were not lower in the elderly group. In several cases, these indices were significantly higher in the elderly than in the younger participants. Hence, both main hypotheses have been falsified. We interpret the unexpectedly low safety margins in the elderly as resulting from several factors such as increased force variability, impaired feed-forward control, and the fact that there was no danger of dropping the object. Our results suggest that in some natural tasks, such as the one used in this study, healthy elderly persons show no impairment, as compared to younger persons, in their ability to organize digits into synergies stabilizing salient performance variables. 相似文献
970.
Ferrucci R Giannicola G Rosa M Fumagalli M Boggio PS Hallett M Zago S Priori A 《Cognition & emotion》2012,26(5):786-799
Some evidence suggests that the cerebellum participates in the complex network processing emotional facial expression. To evaluate the role of the cerebellum in recognising facial expressions we delivered transcranial direct current stimulation (tDCS) over the cerebellum and prefrontal cortex. A facial emotion recognition task was administered to 21 healthy subjects before and after cerebellar tDCS; we also tested subjects with a visual attention task and a visual analogue scale (VAS) for mood. Anodal and cathodal cerebellar tDCS both significantly enhanced sensory processing in response to negative facial expressions (anodal tDCS, p=.0021; cathodal tDCS, p=.018), but left positive emotion and neutral facial expressions unchanged (p>.05). tDCS over the right prefrontal cortex left facial expressions of both negative and positive emotion unchanged. These findings suggest that the cerebellum is specifically involved in processing facial expressions of negative emotion. 相似文献