全文获取类型
收费全文 | 5883篇 |
免费 | 57篇 |
国内免费 | 9篇 |
专业分类
5949篇 |
出版年
2021年 | 17篇 |
2020年 | 24篇 |
2019年 | 20篇 |
2018年 | 153篇 |
2017年 | 121篇 |
2016年 | 215篇 |
2015年 | 113篇 |
2014年 | 55篇 |
2013年 | 182篇 |
2012年 | 310篇 |
2011年 | 302篇 |
2010年 | 57篇 |
2009年 | 51篇 |
2008年 | 84篇 |
2007年 | 80篇 |
2006年 | 74篇 |
2005年 | 1347篇 |
2004年 | 692篇 |
2003年 | 465篇 |
2002年 | 172篇 |
2001年 | 68篇 |
2000年 | 66篇 |
1999年 | 51篇 |
1998年 | 20篇 |
1994年 | 18篇 |
1992年 | 43篇 |
1991年 | 60篇 |
1990年 | 94篇 |
1989年 | 68篇 |
1988年 | 39篇 |
1987年 | 63篇 |
1986年 | 71篇 |
1985年 | 50篇 |
1984年 | 46篇 |
1983年 | 43篇 |
1982年 | 15篇 |
1981年 | 16篇 |
1979年 | 43篇 |
1978年 | 21篇 |
1976年 | 18篇 |
1975年 | 46篇 |
1974年 | 47篇 |
1973年 | 50篇 |
1972年 | 39篇 |
1971年 | 41篇 |
1970年 | 32篇 |
1969年 | 27篇 |
1968年 | 25篇 |
1967年 | 27篇 |
1966年 | 22篇 |
排序方式: 共有5949条查询结果,搜索用时 0 毫秒
51.
52.
53.
54.
55.
56.
57.
58.
Tenacious goal pursuit and flexible goal adjustment: explication and age-related analysis of assimilative and accommodative strategies of coping 总被引:6,自引:0,他引:6
Crises and critical life transitions activate 2 distinct but complementary modes of coping, (a) transforming developmental circumstances in accordance with personal preferences (assimilative tendency) and (b) adjusting personal preferences to situational constraints (accommodative tendency). Assimilative and accommodative tendencies were measured by a questionnaire comprising 2 independent scales (Tenacious Goal Pursuit and Flexible Goal Adjustment). Both scales predict high life satisfaction and low depression and are positively related to generalized internal control beliefs. The scales evinced an opposite relation to age: Cross-sectional analyses on a sample of 890 Ss in the age range from 34 to 63 years revealed a gradual shift from an assimilative to an accommodative mode of coping. Implications for theories of depression and successful aging are discussed. 相似文献
59.
An automated system for measuring intracranial self-stimulation behavior is described. The system consists of two Commodore 6502 microcomputers interfaced with a constant-current generator and a standard operant chamber. The system hardware allows sine- and square-wave stimulation. Stimulus intensity can be varied in 256 steps between 0 and 100, 0 and 500, or 0 and 1,000 /µA. The system programs, which are written in machine language, allow the control of various schedules of reinforcement, the counting of operant responses and reinforcements, the measurement of interresponse intervals, and the storage of the data on disk. The software is designed for the determination of the threshold of reinforcement, on the basis of the titration of postreinforcement pauses caused by changeover in schedule control between concurrent continuous reinforcement and fixed ratio schedules. 相似文献
60.
Lindsay St. Claire 《Journal of community & applied social psychology》1993,3(3):183-195
Briefs about mentally retarded people are more negative than briefs about other social categories; professionals, such as medical doctors evaluate them most negatively of all. It was hypothesized (a) that medics' beliefs about mentally retarded people are mediated by psychological salience of their clinical social identification, rather than by personal characteristics that medics happen to share and (b) that such beliefs will bias decisions, rather than enhance accuracy. Forty-five doctors and medical students were randomly assigned to conditions designed to enhance salience of their shared clinical social identification or individual self-perceptions. Subjects completed semantic differentials about mentally retarded people and distinguished between slides of ‘mentally retarded’ and ‘normal’ children. Beliefs of subjects in the medical condition were significantly more negative than those in the personal condition. A signal detection analysis revealed no difference between conditions in subjects' ability to distinguish between children but showed that subjects in the medical condition were significantly more likely to judge a child ‘mentally retarded’ when in doubt. Results were discussed within an information processing framework and supported the idea that a salient clinical social identity can mediate beliefs that are likely to handicap patients. 相似文献