全文获取类型
收费全文 | 217673篇 |
免费 | 9236篇 |
国内免费 | 157篇 |
专业分类
227066篇 |
出版年
2020年 | 2829篇 |
2019年 | 3495篇 |
2018年 | 4147篇 |
2017年 | 4497篇 |
2016年 | 5036篇 |
2015年 | 3980篇 |
2014年 | 4848篇 |
2013年 | 23584篇 |
2012年 | 6127篇 |
2011年 | 5762篇 |
2010年 | 4641篇 |
2009年 | 5127篇 |
2008年 | 5654篇 |
2007年 | 5344篇 |
2006年 | 5426篇 |
2005年 | 5229篇 |
2004年 | 4735篇 |
2003年 | 4288篇 |
2002年 | 4114篇 |
2001年 | 5400篇 |
2000年 | 5159篇 |
1999年 | 4439篇 |
1998年 | 3029篇 |
1997年 | 2840篇 |
1996年 | 2755篇 |
1995年 | 2551篇 |
1994年 | 2507篇 |
1993年 | 2472篇 |
1992年 | 3699篇 |
1991年 | 3486篇 |
1990年 | 3374篇 |
1989年 | 3176篇 |
1988年 | 3130篇 |
1987年 | 3062篇 |
1986年 | 3111篇 |
1985年 | 3335篇 |
1984年 | 3142篇 |
1983年 | 2823篇 |
1982年 | 2570篇 |
1981年 | 2534篇 |
1980年 | 2372篇 |
1979年 | 3015篇 |
1978年 | 2576篇 |
1977年 | 2442篇 |
1976年 | 2294篇 |
1975年 | 2653篇 |
1974年 | 2824篇 |
1973年 | 2807篇 |
1972年 | 2333篇 |
1968年 | 2245篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
941.
Predictors and consequences of childhood depressive symptoms: a 5-year longitudinal study. 总被引:31,自引:0,他引:31
A 5-year longitudinal study investigated the interrelationships among children's experiences of depressive symptoms, negative life events, explanatory style, and helplessness behaviors in social and achievement situations. The results revealed that early in childhood, negative events, but not explanatory style, predicted depressive symptoms; later in childhood, a pessimistic explanatory style emerged as a significant predictor of depressive symptoms, alone and in conjunction with negative events. When children suffered periods of depression, their explanatory styles not only deteriorated but remained pessimistic even after their depression subsided, presumably putting them at risk for future episodes of depression. Some children seem repeatedly prone to depressive symptoms over periods of at least 2 years. Depressed children consistently showed helpless behaviors in social and achievement settings. 相似文献
942.
This research evaluated the relationship between pain and sleep problems, and the role of pain and sleep problems in depression, in a sample of 242 patients who had been diagnosed with definite or classical rheumatoid arthritis (RA). Patients completed the Pain scale of the Arthritis Impact Measurement Scales, the Center for Epidemiological Studies Depression Scale, and self-reports of sleep disturbance at two data waves over a 2-year interval. Cross-sectional multiple regression analysis revealed that the sleep problems variable was independently associated with depression at Time 1. Longitudinal multiple regression analyses demonstrated that prior pain predicted subsequent adverse changes in sleep problems, whereas sleep problems did not affect pain over time, and prior pain and the interaction of high pain and high sleep problems were independently associated with depression from Time 1 to Time 2. These data suggest that pain may exacerbate sleeping difficulty in RA patients, and that both factors may contribute to depression over time. 相似文献
943.
Z Solomon M Waysman G Levy B Fried M Mikulincer R Benbenishty V Florian A Bleich 《Family process》1992,31(3):289-302
While the long-term effects of combat trauma on veterans have been studied extensively, its impact on veterans' wives has yet to be investigated. This study examined the implications of combat-induced psychopathology--wartime combat stress reaction (CSR) and current posttraumatic stress disorder (PTSD)--in a sample of 205 wives of Israeli combat veterans of the 1982 Lebanon war. Results show that both CSR and PTSD were associated with increased psychiatric symptoms in the wives. In addition, current PTSD was particularly found to contribute to impaired social relations among veterans' wives in a broad range of contexts, from inner feelings of loneliness, through impaired marital and family relations, and extending to the wider social network. Implications of these findings for treatment and further research are discussed. 相似文献
944.
LYMAN C. WYNNE M.D. Ph.D. CLEVELAND G. SHIELDS Ph.D. MARK I. SIRKIN Ph.D. 《Family process》1992,31(1):3-18
This article examines and clarifies controversies about the concept of illness in the field of family therapy. We contend that illness, as traditionally understood in all cultures, is a relational, transactional concept that is highly congruent with core principles of present-day family theories. Family therapists need not buy into a biotechnical, reductionistic reframing of illness as disease. Rather, it is more appropriate to conceptualize and work with illness as a narrative placed in a biopsychosocial context. Such a narrative includes how shared responsibility for coping and for finding solutions can take place, without becoming involved in disputes about causal models. 相似文献
945.
946.
947.
The past fifteen years have seen the development of a considerable research literature on the social psychology of procedural justice (see Lind & Tyler, 1988, for a review). Procedural justice research reveals some serious shortcomings in the exchange theories that have traditionally dominated Western analyses of the social psychology of groups, and in so doing, the procedural justice literature has important ramifications for cross-cultural psychology. Results from a number of studies conducted in the United States and Western Europe show that individualistic, self-interest based models of human behaviour are insufficient to explain procedural justice phenomena. Instead, procedural justice effects frequently reveal strong group-oriented concerns and motivations even in cultural contexts generally thought to be characterized by individualistic orientations. The research literature also shows that if a group's procedures are judged to be fair, people are more likely to show group-oriented behaviour and to hold more favourable attitudes toward the group and its leaders. These findings have led to the development of a theory of justice judgments—the Lind and Tyler group-value theory—which is based on group norms and relations rather than on social exchange theory. We describe a general model of social behaviour that integrates group- and individually-oriented behaviour, and we discuss the implications of the model for social and cross-cultural psychology. 相似文献
948.
This study examined Protestant Work Ethic (PWE) and Just World Beliefs (JWB) in Great Britain and India. Secondary school children, university students and adults completed seven PWE questionnaires and the JWB questionnaire. A three-way (sex × occupational status × nationality) ANOVA showed highly significant main effects, particularly for nationality, but few significant interactions. Generally females more than males, Indians more than Britons, and schoolchildren more than adults endorse the PWE and JWB. Possible experimental artifacts and moderator variables are considered along with the possibility that genuine cultural differences were found. These results are discussed in terms of the relevant literature on cross-cultural studies of the PWE and BJW. 相似文献
949.
950.
Twenty treated and 18 untreated spider phobics were exposed to a series of 72 slides. Three different categories of slides were used: phobia-relevant slides (spiders), alternative fear-relevant slides (weapons), and neutral slides (flowers). Slides were randomly paired with either a shock, a tone, or nothing at all. Despite the absence of a systematic correlation between slides and outcomes, untreated phobics strongly overestimated the covariation between spider slides and shock. Treated phobics did not show a covariation bias, suggesting that such bias can be modulated by behavioral treatment. In addition, untreated subjects were more confident about their contingency estimates than were treated subjects. The present results fit with earlier studies. 相似文献