全文获取类型
收费全文 | 40866篇 |
免费 | 889篇 |
国内免费 | 5篇 |
专业分类
41760篇 |
出版年
2020年 | 431篇 |
2019年 | 473篇 |
2018年 | 640篇 |
2017年 | 642篇 |
2016年 | 715篇 |
2015年 | 546篇 |
2014年 | 602篇 |
2013年 | 2729篇 |
2012年 | 1162篇 |
2011年 | 1139篇 |
2010年 | 726篇 |
2009年 | 661篇 |
2008年 | 1002篇 |
2007年 | 983篇 |
2006年 | 855篇 |
2005年 | 820篇 |
2004年 | 754篇 |
2003年 | 697篇 |
2002年 | 701篇 |
2001年 | 1282篇 |
2000年 | 1229篇 |
1999年 | 892篇 |
1998年 | 404篇 |
1997年 | 348篇 |
1992年 | 865篇 |
1991年 | 810篇 |
1990年 | 823篇 |
1989年 | 718篇 |
1988年 | 713篇 |
1987年 | 683篇 |
1986年 | 721篇 |
1985年 | 796篇 |
1984年 | 592篇 |
1983年 | 552篇 |
1982年 | 368篇 |
1981年 | 362篇 |
1979年 | 686篇 |
1978年 | 424篇 |
1977年 | 419篇 |
1976年 | 412篇 |
1975年 | 584篇 |
1974年 | 670篇 |
1973年 | 713篇 |
1972年 | 621篇 |
1971年 | 583篇 |
1970年 | 576篇 |
1969年 | 563篇 |
1968年 | 755篇 |
1967年 | 664篇 |
1966年 | 595篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
831.
Coping with a major stressor: differences between habitual short- and longer-sleepers. 总被引:1,自引:0,他引:1
We compared the coping strategies of 39 short-sleepers and 33 longer-sleepers to the stresses associated with the October 17, 1989 San Francisco Bay Area earthquake using their responses to the eight scales of the Ways of Coping Questionnaire. Over-all, the short-sleepers scored significantly higher on this questionnaire and in general, the pattern of their responses was consistent with inferences that could be drawn from a 1972 paper by Hartmann, Baekeland, and Zwilling. 相似文献
832.
Even with radical restriction of range, reliability coefficients from 10 studies gave an average interstudy value of .74, suggesting constancy of reliability over diverse experiments. A value from a new test can help index reliability of tests not previously studied. 相似文献
833.
Biobehavioral factors in sudden cardiac death 总被引:2,自引:0,他引:2
The authors examine the recent literature on psychological factors and sudden cardiac death and explore the mediating psychophysiological processes by which these variables may be associated. Direct evidence that psychosocial stressors and their correlates may be causally linked with sudden cardiac death in humans is not conclusive, but there is abundant convergent evidence that several physiological precursors of sudden death may be promoted by psychological challenge, especially in persons with coronary heart disease. The authors call for increased attention to the acute effects of psychological events on cardiovascular health. 相似文献
834.
R Kail 《Psychological bulletin》1991,109(3):490-501
Throughout childhood and adolescence, there are consistent age differences in speed of processing. Here 72 published studies yielded 1,826 pairs of response times (RTs) in which each pair consisted of adults' mean RT for a condition and the corresponding mean RT for a younger group. The primary results were that (a) children's and adolescents' RTs increase linearly as a function of adult RTs in corresponding conditions and (b) the amount of increase becomes smaller with age in a manner that is well described by an exponential function. These results are consistent with the view that age differences in processing speed reflect some general (i.e., nontask specific) component that changes rapidly during childhood and more slowly during adolescence. Possible candidates for the general component are discussed. 相似文献
835.
The Psychological Record - The effect of point loss frequency on aggressive and escape responding was investigated in two experiments. Subjects could respond on levers marked “A,”... 相似文献
836.
The author rejects the proposition, encountered in some parts of the psychoanalytic and social-science literature, that certain types of disturbances correspond to certain epochs or forms of society. Instead he reminds us of the core of the psychoanalytic theory of representation according to which every formation of inner structure is an individual creative innovation that eludes normative interpretation. 相似文献
837.
Treatment of rats with the potent antiaggressive compound eltoprazine hydrochloride (1.0 & 2.0 mg/kg) slowed both predatory attack and killing of frogs. These results demonstrate a specific predation-inhibiting action of the drug which is not obscured by the elements of conspecific aggression seen during muricide. Unlike the closely related compound fluprazine, eltoprazine increased both attack and kill latencies implying that the effects of the two drugs on predation are mediated by at least somewhat distinct drug actions. It is further suggested that eltoprazine may be more specifically antiaggressive in its actions than related phenylpiperazine compounds.
相似文献838.
The present study attempted to assess the importance of five factors theorized to play a central role in managing countertransference: Self-integration, Anxiety Management, Conceptualizing Skills, Empathy, and Self-insight. 33 experts provided ratings of 50 characteristics of therapists as to the importance of each in managing countertransference. Analysis indicated that each factor is at least somewhat important to management of countertransference, with two of the factors, Self-integration and Self-insight, rated as playing a particularly important role. Clinical implications are discussed. 相似文献
839.
840.
This study was designed to provide data for notions that differences in achievement motivation in different nations may contribute to differences in national rates of economic growth. The nations investigated were the United Kingdom and Japan as representatives of low and high rates of economic growth in the decades after the end of World War II. Data were collected from college students for motivations and attitudes related to work. British students had higher achievement motivation, while Japanese students had higher competitiveness motivation and strong money beliefs. Differences in career preference between the nations were also presented. The relationship between motivations and attitudes to work with career preference were examined for each nation. 相似文献