全文获取类型
收费全文 | 64265篇 |
免费 | 2463篇 |
国内免费 | 31篇 |
出版年
2020年 | 681篇 |
2019年 | 889篇 |
2018年 | 1201篇 |
2017年 | 1317篇 |
2016年 | 1278篇 |
2015年 | 921篇 |
2014年 | 1089篇 |
2013年 | 5050篇 |
2012年 | 1962篇 |
2011年 | 2068篇 |
2010年 | 1336篇 |
2009年 | 1312篇 |
2008年 | 1866篇 |
2007年 | 1832篇 |
2006年 | 1654篇 |
2005年 | 1444篇 |
2004年 | 1348篇 |
2003年 | 1345篇 |
2002年 | 1297篇 |
2001年 | 2107篇 |
2000年 | 2039篇 |
1999年 | 1549篇 |
1998年 | 696篇 |
1997年 | 633篇 |
1996年 | 605篇 |
1994年 | 606篇 |
1992年 | 1309篇 |
1991年 | 1204篇 |
1990年 | 1223篇 |
1989年 | 1107篇 |
1988年 | 1108篇 |
1987年 | 1069篇 |
1986年 | 1061篇 |
1985年 | 1068篇 |
1984年 | 905篇 |
1983年 | 791篇 |
1982年 | 603篇 |
1979年 | 957篇 |
1978年 | 702篇 |
1977年 | 631篇 |
1975年 | 797篇 |
1974年 | 851篇 |
1973年 | 938篇 |
1972年 | 741篇 |
1971年 | 669篇 |
1970年 | 619篇 |
1969年 | 690篇 |
1968年 | 791篇 |
1967年 | 717篇 |
1966年 | 701篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
221.
S Baron-Cohen 《Cognition》1988,29(1):83-84
222.
223.
Robert A. Caldwell G. Anne Bogat William S. Davidson II 《American journal of community psychology》1988,16(5):609-624
A frequently advocated strategy for increasing the efficiency of child abuse prevention programs is to deliver prevention services to "high-risk" populations. This article critically reviews procedures for the reliable and valid assessment of child abuse potential within an ecological perspective. Factors that limit the usefulness of child abuse risk assessment are discussed. These factors include the uncertain criteria of child abuse and neglect, the low base rate of the phenomenon, and the financial and social costs of such procedures. Finally, the prevention implications of the current and future state of the art in child abuse risk assessment are considered and preventive interventions that do not depend on individual case risk screening are advocated. 相似文献
224.
Processing resources and age differences in working memory 总被引:1,自引:0,他引:1
This study investigated the performance of young and old subjects on a modified version of the working memory task developed by Baddeley and Hitch (1974). Subjects were required to verify a set of sentences of varying complexity while they repeated aloud zero, two, or four words. The older subjects took longer to verify the sentences, especially when the sentences were grammatically complex, but the effect of concurrent memory load on verification latency was the same in both groups. These results cast doubt on the notion that there is an age-related decline in one general pool of processing resources. They also suggest that older people have greater difficulty with the active processing aspects, rather than with the passive holding aspects, of working memory tasks. 相似文献
225.
Donald L. King 《Memory & cognition》1988,16(1):71-78
Contextual stimuli from one category increase the rated similarity of stimuli from a second category. In Experiment 1, associates of one of the members of pairs of target words increased the rated similarity of the members slightly more than did much less similar contextual stimuli. In Experiment 2, contextual category names and good exemplars increased the rated similarity of pairs of poor to medium target exemplars and were also rated as more similar to these targets than the targets were to each other. In both cases, the category names resulted in the stronger effect. This ability of contextually similar stimuli to increase rated similarity opposes the distance-density and averaging-judgmental theories of the effect of context on similarity. However, the theory that a positive association exists between the perceived similarity of stimuli and the strength of the category to which they belong explains how both contextually dissimilar and contextually similar stimuli can increase rated similarity. 相似文献
226.
The concept of heightened resilience or invulnerability in young profoundly stressed children is developed in terms of its implications for a psychology of wellness and for primary prevention in mental health. Relevant literature is reviewed, a skeletal model for studying resilience is outlined, and needed research directions are considered. The latter include expansion of the construct's nomological definitional net, inquiry into the antecedents and determinants of resilience, and the application of such generative information to frame preventive interventions for young, profoundly stressed children. 相似文献
227.
Two theoretical approaches to smoking cessation were compared. Participants were randomly assigned either to (a) a traditional treatment program that used contingency contracting and that emphasized the necessity for absolute abstinence (AA) or to (b) a relapse-prevention (RP) treatment that focused on gradual acquisition of nonsmoking skills. It was hypothesized that participants in the RP treatment would be less successful initially but would have better maintenance skills and thus would relapse less during a 1-year follow-up period. Each program was evaluated in two formats: group-based treatment and self-help materials. Results indicated comparable 1-year abstinence rates for all treatments, although more participants dropped out of the self-help formats. Participants in the RP intervention were more likely to lapse sooner after quitting and were more likely to quit again during the 1-year maintenance period. Exploratory analyses of successful participants suggested that women were more successful in the RP program and that men had greater success with the AA approach. 相似文献
228.
Spatial coding in the processing of anaphor by good and poor readers: Evidence from eye movement analyses 总被引:1,自引:0,他引:1
Wayne S. Murray Alan Kennedy 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》1988,40(4):693-718
An experiment that examined the way in which young readers deployed eye movements while reading sentences and while answering questions containing either a pronominal or noun anaphor is reported. To evaluate the possible causal role played by differences in inspection strategies between readers of above- and below-average reading skill, a third“age control” group of younger children was also tested. This group was matched on absolute reading ability with the less skilled group of older children, and on relative reading ability (i.e. reading quotient) with the more skilled group. Differences in inspection strategy were apparent between the groups of good and poor readers. Good readers launched more selective reinspections, whereas the poorer readers were more inclined to engage in“backtracking” and appeared to make less use of the displayed text. In every case there was a marked similarity in the behaviour of the good readers and the“age controls”. These results suggest that the ability to code the spatial location of words in a sentence, and, where necessary, to use this information to launch accurately targetted selective reinspections of previously read text, plays a crucial role in the development of skilled reading performance. 相似文献
229.
230.
The distorted room illusion (DRI) and the attendant argument for perceptual ambiguity is critically analyzed from a Gibsonian/ecological point of view. The notions of multiple specification, conflicting information, and perceptual skill are invoked in showing how the ecological approach can accommodate illusion effects that may remain under mobile binocular viewing conditions. Static optic arrays are shown not to be ambiguous. So-called equivalent configurations are found to be analytic artifacts, appearing when the problem of information is treated in geometrical terms without regard for constraints due to physical and ecological regularities. The relative importance of motion-based and motion-independent information is discussed. 相似文献