全文获取类型
收费全文 | 21386篇 |
免费 | 427篇 |
国内免费 | 7篇 |
专业分类
21820篇 |
出版年
2020年 | 305篇 |
2019年 | 307篇 |
2018年 | 470篇 |
2017年 | 454篇 |
2016年 | 465篇 |
2015年 | 342篇 |
2014年 | 378篇 |
2013年 | 1627篇 |
2012年 | 702篇 |
2011年 | 760篇 |
2010年 | 449篇 |
2009年 | 439篇 |
2008年 | 572篇 |
2007年 | 561篇 |
2006年 | 480篇 |
2005年 | 416篇 |
2004年 | 414篇 |
2003年 | 377篇 |
2002年 | 378篇 |
2001年 | 803篇 |
2000年 | 778篇 |
1999年 | 535篇 |
1998年 | 214篇 |
1997年 | 204篇 |
1996年 | 176篇 |
1993年 | 180篇 |
1992年 | 417篇 |
1991年 | 389篇 |
1990年 | 400篇 |
1989年 | 382篇 |
1988年 | 380篇 |
1987年 | 344篇 |
1986年 | 356篇 |
1985年 | 356篇 |
1984年 | 292篇 |
1983年 | 244篇 |
1982年 | 175篇 |
1979年 | 246篇 |
1978年 | 218篇 |
1977年 | 179篇 |
1975年 | 249篇 |
1974年 | 304篇 |
1973年 | 254篇 |
1972年 | 255篇 |
1971年 | 219篇 |
1970年 | 185篇 |
1969年 | 234篇 |
1968年 | 248篇 |
1967年 | 215篇 |
1966年 | 219篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
Two groups of American undergraduates (moderate and heavy social drinkers) completed a matrix task and received either positive or negative feedback on their performance. Following this they were given a maze task, which was designed so that cheating could be detected. Heavy drinkers cheated more than moderate drinkers under success conditions (positive feedback). Heavy drinkers who received positive feedback also cheated more than heavy drinkers who received negative feedback. The results are interpreted in terms of self-handicapping theory. 相似文献
84.
The influence of perceived somatotype on stereotypes of behavior associated with body build was investigated among 160 male and 140 female Nigerian children in secondary school. In both groups, the perception of subjects' own physiques and discrepancy between their perceived and preferred physiques significantly explained the variance in the character trait scores attributed to body types. In general, the subjects attributed positive character traits to their perceived somatotypes and undesirable traits to the physiques with which they were dissatisfied. Thus, the perception of somatotype and discrepancy between perceived and preferred physique could significantly differentiate the character traits attributed to body build among male and female children. 相似文献
85.
86.
M K Johnson J K Kim G Risse 《Journal of experimental psychology. Learning, memory, and cognition》1985,11(1):22-36
In this study we report two experiments that investigate the acquisition of affective reactions. In Experiment 1, unfamiliar melodies were played to Korsakoff's syndrome patients and alcoholic and nonalcoholic control subjects who were matched with them according to age and education. Following a retention interval of 5 min, subjects received a preference test on old and new melodies. Korsakoff's syndrome patients showed the same increase in preference for old melodies as a consequence of prior exposures as control subjects did, but their recognition of melodies was significantly impaired in comparison with controls. In Experiment 2, the same subjects saw photographs of two men. Fictional biographical information depicted one as a "good guy" and the other as a "bad guy." After a retention interval of approximately 20 days, Korsakoffs recalled virtually none of the biographical information; however, 78% preferred the good guy, and impression ratings were less favorable for the bad guy. Korsakoff patients developed preferences and impressions even though they did not have voluntary access to the information on which the preferences were based. However, their impression ratings were less extreme than those of controls. The pattern of results of the two studies is discussed in terms of Johnson's (1983) MEM model of memory. 相似文献
87.
K. Nakatani 《Psychological research》1985,47(4):223-233
Summary The method of fixed set (Uznadze, 1966) was applied to the size-weight illusion. After the repeated lifting of a small, heavy stimulus and a large, light one with both hands simultaneously, the size-weight illusion diminished. It increased after lifting a small, light stimulus and a large, heavy one. These changes in perception were explained as contrast effects caused by the sets which were fixed during the preceding lifts. The same method was applied to the weight-size illusion and the contrast effect was observed in some cases. The results of the application of the fixed-set method to the size-weight illusion and to the visual size perception were compared. All the results showed analogous patterns of conflicting states between the temporarily fixed set and the set that the subject prepares naturally for perception, such as the size-weight illusion. By way of conclusion, the size-weight illusion was assumed to be a kind of contrast effect in the light of Uznadze's theory of set. 相似文献
88.
Alternation behavior, spatial discrimination, and reversal disturbances following 6-hydroxydopamine lesions in the nucleus accumbens of the rat 总被引:3,自引:0,他引:3
K Taghzouti A Louilot J P Herman M Le Moal H Simon 《Behavioral and neural biology》1985,44(3):354-363
The effects of dopaminergic depletion of the nucleus accumbens was tested in various behavioral tasks such as alternation, spatial discrimination, and reversal learning, and in an extinction paradigm in a T maze. Animals with lesions showed impairment of spontaneous alternation behavior, disturbances in the acquisition of spatial discrimination, and great difficulty in reversing previously learned habits. In the extinction phase, experimental animals are unable to adjust their behavior, and continue to choose the previously reinforced arm of the T maze. It is suggested that the nucleus accumbens plays an important role in the transition of motivation into action, and that dopamine has a facilitatory influence on the mediation of these processes. 相似文献
89.
K W Vine 《Genetic, social, and general psychology monographs》1985,111(4):455-503
This study sought to identify the higher level knowledge (e.g., conservation of number) necessary for a child to understand linear measurement and to chart the growth of linear measurement in terms of the development of its components. To assess the presence of these components, a battery of 34 number, length, and distance tasks was developed and administered to 100 children between the ages of 63 and 78 months from kindergarten and Grade 1. Results indicate that there is a substantial delay between acquisition of the necessary components and emergence of a mature grasp of linear measurement. The collection of components for the number and length domains form scaled sets; within each domain, however, the pattern of development is marked by discontinuities. These discontinuities are interpreted as being associated with the need to reorganize number and length concepts. Most elements of the observed sequences of development are predicted by Piagetian theory, although others, such as asynchronies between conservation and transitive inferences of nonequivalence, are more consistent with Gagne's (1968) model of development. 相似文献
90.
H K Gediman 《Journal of the American Psychoanalytic Association》1985,33(4):911-935
This paper deals with imposturous tendencies as ubiquitous and heterogeneous. They may enter into neurotic conflict and compromise, and also reflect an ego function disturbance involving multiple, shifting identities and subsequent problems in the subjective sense of reality of the self and objects. Imposture in a person undergoing analysis is, however, not only a function of individual character and psychopathology; it is also a function of certain inevitable requirements of the analytic situation which constitute a "pull" for its emergence. Vulnerable individuals will respond to this pull in revealing ways. Three case summaries illustrate the spectrum of imposturous tendencies. 相似文献