全文获取类型
收费全文 | 58309篇 |
免费 | 2301篇 |
国内免费 | 33篇 |
专业分类
60643篇 |
出版年
2020年 | 649篇 |
2019年 | 809篇 |
2018年 | 1170篇 |
2017年 | 1172篇 |
2016年 | 1251篇 |
2015年 | 845篇 |
2014年 | 1011篇 |
2013年 | 5130篇 |
2012年 | 1862篇 |
2011年 | 2017篇 |
2010年 | 1193篇 |
2009年 | 1237篇 |
2008年 | 1853篇 |
2007年 | 1858篇 |
2006年 | 1643篇 |
2005年 | 1490篇 |
2004年 | 1444篇 |
2003年 | 1378篇 |
2002年 | 1398篇 |
2001年 | 1840篇 |
2000年 | 1733篇 |
1999年 | 1378篇 |
1998年 | 743篇 |
1997年 | 663篇 |
1996年 | 604篇 |
1995年 | 615篇 |
1994年 | 569篇 |
1993年 | 601篇 |
1992年 | 1089篇 |
1991年 | 1026篇 |
1990年 | 1006篇 |
1989年 | 917篇 |
1988年 | 884篇 |
1987年 | 874篇 |
1986年 | 871篇 |
1985年 | 925篇 |
1984年 | 759篇 |
1983年 | 676篇 |
1982年 | 546篇 |
1981年 | 511篇 |
1980年 | 517篇 |
1979年 | 745篇 |
1978年 | 581篇 |
1976年 | 549篇 |
1975年 | 665篇 |
1974年 | 702篇 |
1973年 | 673篇 |
1972年 | 593篇 |
1968年 | 577篇 |
1967年 | 571篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
A study and replication of students faking interest in high status occupations on the Strong Vocational Interest Blank for Men. In general, the faking was successful in shifting the specific target occupational scales and especially the occupational level scale. Other scales are affected, many with decisive upward or downward shifts. Demonstration is made of the extent to which the faking condition led to differences in the overall test results. Various aspects of the general problem of test faking are reviewed. 相似文献
992.
993.
Septum and behavior: a review 总被引:2,自引:0,他引:2
P A Fried 《Psychological bulletin》1972,78(4):292-310
994.
995.
996.
997.
998.
999.
1000.
Rats pressed a lever to avoid shock on a free-operant avoidance schedule. Some subjects were also exposed to extinction in which the response-shock contingency was eliminated while the shock-shock contingency remained in effect. A specially constructed lever was used that registered not only presses, but also biting attacks on the lever. Throughout various phases of the study, shocks often elicited lever biting as well as post-shock responding. The results suggested that shock-elicited attacks that are forceful enough to activate the operandum might account for some of the responding that occurs in experiments on free-operant avoidance behavior. In particular, shock-elicited operandum attacking might account for post-shock response bursting during free-operant avoidance and the extreme persistence of responding sometimes noted when shocks are delivered during the extinction of avoidance behavior. To the extent that this is true, these phenomena should not be characterized as operant behavior in interpreting the results of experiments on free operant avoidance. 相似文献