全文获取类型
收费全文 | 2622篇 |
免费 | 112篇 |
国内免费 | 3篇 |
专业分类
2737篇 |
出版年
2020年 | 37篇 |
2019年 | 46篇 |
2018年 | 76篇 |
2017年 | 54篇 |
2016年 | 68篇 |
2015年 | 40篇 |
2014年 | 42篇 |
2013年 | 249篇 |
2012年 | 87篇 |
2011年 | 106篇 |
2010年 | 66篇 |
2009年 | 64篇 |
2008年 | 99篇 |
2007年 | 84篇 |
2006年 | 80篇 |
2005年 | 79篇 |
2004年 | 68篇 |
2003年 | 70篇 |
2002年 | 61篇 |
2001年 | 62篇 |
2000年 | 58篇 |
1999年 | 44篇 |
1998年 | 53篇 |
1997年 | 26篇 |
1996年 | 36篇 |
1995年 | 27篇 |
1994年 | 31篇 |
1992年 | 39篇 |
1991年 | 58篇 |
1990年 | 42篇 |
1989年 | 41篇 |
1988年 | 35篇 |
1987年 | 34篇 |
1986年 | 33篇 |
1985年 | 29篇 |
1984年 | 27篇 |
1983年 | 24篇 |
1982年 | 33篇 |
1981年 | 36篇 |
1979年 | 34篇 |
1978年 | 30篇 |
1977年 | 26篇 |
1976年 | 29篇 |
1975年 | 29篇 |
1974年 | 27篇 |
1973年 | 27篇 |
1972年 | 24篇 |
1970年 | 24篇 |
1968年 | 27篇 |
1967年 | 28篇 |
排序方式: 共有2737条查询结果,搜索用时 15 毫秒
191.
192.
Patients with frontotemporal dementia (both behavioural variant [bvFTD] and semantic dementia [SD]) as well as those with Alzheimer's disease (AD) show deficits on tests of face emotion processing, yet the mechanisms underlying these deficits have rarely been explored. We compared groups of patients with bvFTD (n = 17), SD (n = 12) or AD (n = 20) to an age- and education-matched group of healthy control subjects (n = 36) on three face emotion processing tasks (Ekman 60, Emotion Matching and Emotion Selection) and found that all three patient groups were similarly impaired. Analyses of covariance employed to partial out the influences of language and perceptual impairments, which frequently co-occur in these patients, provided evidence of different underlying cognitive mechanisms. These analyses revealed that language impairments explained the original poor scores obtained by the SD patients on the Ekman 60 and Emotion Selection tasks, which involve verbal labels. Perceptual deficits contributed to Emotion Matching performance in the bvFTD and AD patients. Importantly, all groups remained impaired on one task or more following these analyses, denoting a primary emotion processing disturbance in these dementia syndromes. These findings highlight the multifactorial nature of emotion processing deficits in patients with dementia. 相似文献
193.
194.
Benjamin E. Baran Linda Rhoades Shanock Lindsay R. Miller 《Journal of business and psychology》2012,27(2):123-147
Purpose
This review focuses and aids the development of organizational support theory, which explains relationships between employers and employees based on social exchange. Many studies have explored the theory??s central construct, perceived organizational support (POS), or the degree to which employees believe their work organization values their contributions and cares about their well-being. Since the last review of POS literature in 2000, the occupational landscape has shifted, increasing nontraditional work relationships and the importance of managing an international workforce while considering influences on employee well-being. This review discusses how the recent POS research reflects these trends.Design/Methodology/Approach
This review focused on how themes in the POS research since 2000 have enhanced organizational support theory as relevant to the twenty-first century world of work.Findings
Four important theoretical themes have developed since 2000 that enhance organizational support theory: considerations of employee well-being, nontraditional workers, international and cross-cultural issues, and developments tied to the use of multilevel modeling.Implications
Giving both researchers and practitioners a synthesized view of the current status of POS research, this review serves as a springboard for new developments. It also integrates the multitude of recent studies into organizational support theory, focusing theoretical progress.Originality/Value
This is the first review and theoretical integration of the POS literature since 2002. It is a valuable resource for all interested in the field, with theoretical insights, useful tables, explanatory figures, and references. 相似文献195.
Congenital adrenal hyperplasia (CAH) due to steroid 21-hydroxylase deficiency is a common autosomal recessive disorder due to mutations in the CYP21A2 gene. Since genetic counselors play a crucial role in educating families about inherited disorders, they need to have thorough knowledge regarding the pathophysiology of CAH especially the effects on the fetus, the complex genetics of this disorder, and the controversies surrounding experimental prenatal dexamethasone treatment. Affected female fetuses may have varying degree of virilization of the external genitalia. Starting in the 1980's, supraphysiologic glucocorticoid treatment was used to decrease the virilization of the external genitalia of affected female fetuses. However, recent clinical observations, animal studies and greater awareness of the details of human fetal adrenal physiology raise concerns regarding the safety of this prenatal treatment. We review the pathophysiology of CAH, the safety and ethical considerations of prenatal dexamethasone treatment and the views of multiple medical societies that conclude that this experimental therapy should only be done in prospective trials approved by ethical review boards. 相似文献
196.
197.
It is well established that humans and other animals may treat two perceptually different cues alike, if the cues have been
individually paired with a common antecedent or a common consequence. Recently, Molet et al. (Psychon Bull Rev 18:618–623,
2011) reported evidence for a new form of acquired equivalence in human conditional discrimination, namely context-mediated equivalence.
In the present research, using a flavor conditioning procedure, we asked whether rats would show similar context-mediated
equivalence to demonstrate that this new form of acquired equivalence is a general phenomenon. Rats experienced two flavor
cues A and B each presented either in the same context, X, or each in its own distinctive context, X or Y. Subsequently, the
rats experienced B with sucrose in a third context, Z, and then the generalization of conditioning to A was assessed. When
tested in Context Z, consumption of A was more marked when A and B had both been presented in the same context than when they
had been presented in two different contexts. Thus, importantly, in the absence of the training context, cues that shared
a common context at different times came to be treated as equivalent. This represents the first evidence of context-mediated
equivalence in a nonhuman species. 相似文献
198.
199.
Kimberly Rios S. Christian Wheeler Dale T. Miller 《Journal of experimental social psychology》2012,48(6):1300-1309
The present studies tested whether people, particularly those who are most vulnerable to self-threats as indicated by low implicit self-esteem, adopt and express minority opinions to compensate for self-uncertainty. In Studies 1 through 3, low implicit self-esteem participants who were made to feel uncertain about themselves as individuals (versus uncertain about a self-irrelevant issue in Study 1, certain about themselves in Study 2, or uncertain about their group memberships in Study 3) expressed more disagreement with others' opinions. Additionally, Study 3 demonstrated that this effect is specific to minority opinions and does not emerge on majority opinions. In Study 4, the relation between self-uncertainty and disagreement with others' opinions was strongest among participants with both low implicit and high explicit self-esteem, who respond to self-threats in particularly defensive ways. 相似文献
200.
Little is known about what predicts the budding sense of self-competence in preschoolers. This is particularly true of cognitive competence, which may have implications for later schooling. Based on previous research with older children, it was expected that feelings of self-competence would be influenced by attitudes of significant others as well as intrapersonal dispositions. Forty-five Head Start preschoolers (M age = 4.36 years) served as participants. As expected, high effortful control and language competence, as well as teachers' ratings of competence, predicted positive feelings about cognitive competence in children. Further analysis revealed that the teachers' ratings were predicted by maternal education and language competence. The findings suggest that the development of cognitive self-concept in preschoolers is predicted by contextual and constitutional factors. 相似文献