全文获取类型
收费全文 | 19739篇 |
免费 | 812篇 |
国内免费 | 4篇 |
专业分类
20555篇 |
出版年
2020年 | 202篇 |
2019年 | 323篇 |
2018年 | 398篇 |
2017年 | 367篇 |
2016年 | 422篇 |
2015年 | 281篇 |
2014年 | 388篇 |
2013年 | 1725篇 |
2012年 | 632篇 |
2011年 | 716篇 |
2010年 | 416篇 |
2009年 | 444篇 |
2008年 | 601篇 |
2007年 | 588篇 |
2006年 | 550篇 |
2005年 | 439篇 |
2004年 | 484篇 |
2003年 | 452篇 |
2002年 | 422篇 |
2001年 | 521篇 |
2000年 | 582篇 |
1999年 | 394篇 |
1998年 | 244篇 |
1997年 | 192篇 |
1996年 | 187篇 |
1995年 | 186篇 |
1994年 | 169篇 |
1992年 | 310篇 |
1991年 | 310篇 |
1990年 | 337篇 |
1989年 | 316篇 |
1988年 | 301篇 |
1987年 | 252篇 |
1986年 | 272篇 |
1985年 | 285篇 |
1984年 | 213篇 |
1983年 | 225篇 |
1982年 | 173篇 |
1979年 | 258篇 |
1978年 | 226篇 |
1975年 | 219篇 |
1974年 | 248篇 |
1973年 | 272篇 |
1972年 | 235篇 |
1971年 | 214篇 |
1970年 | 167篇 |
1969年 | 196篇 |
1968年 | 250篇 |
1967年 | 243篇 |
1966年 | 215篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
931.
In this study, relations between cybervictimization and internalizing and conduct problems were analyzed while controlling for traditional victimization. A sample of 701 emerging adults in secondary vocational education completed self-reports about cybervictimization, traditional victimization, internalizing problems and conduct problems. Using multiple regression analyses with heteroscedasticity-consistent estimates, it was found that cybervictimization is related to internalizing and conduct problems while controlling for traditional victimization. The results suggest that cybervictimization is related to both internalizing and conduct problems over and above traditional victimization. The discussion focuses on the need to address bullying and cyberbullying among emerging adults. 相似文献
932.
Hansueli F. Etter 《Psychological Perspectives》2020,63(1):106-117
Jung developed over 50?years a paradigmatic idea of an acausal principle, which he called synchronicity. His hypothesis on synchronicity states that, complementary to causality, there exists a further explanatory principle whose effects appear as acausal but meaningful events. Therewith Jung added to the triadic principles of space, time and causality a fourth principle: synchronicity. The experience of individual synchronicities points to a general acausal and meaningful orderedness in nature which apparently exists outside man. Jung published Answer to Job and Synchronicity at the same time, for he attempted to open up a new path to the “state of spiritualization” Beseeltheit of Matter by making the assumption that “being is endowed with meaning.” According to Jung there exists a latent meaning in the cosmos, which existed long before human consciousness developed. He believed that “on the organic level it might be possible to regard biological morphogenesis in the light of the synchronistic factor.” One of many examples in the biological evolution is a Cretaceous-Palaeogene worldwide catastrophe approx. 65 million years ago that resulted in the mass extinction of the dinosaurs. It is understood as the result of a meteorite impact. This catastrophe was a most meaningful chance from the point of view of the mammals, including modern man. We modern humans finally came into existence thanks to a series of cosmic happenings, which were based on causality and synchronicity. What is true for our personal individuation is also true for biological or historical developments: an acausal but meaningful principle is secretly at work. 相似文献
933.
Synthese - Information exchange can be viewed as a process of asking questions and answering them. While dynamic epistemic logic traditionally focuses on statements, recent developments have been... 相似文献
934.
Esma Esen Ciftci Manuela Barreto David Matthew Doyle Jolien van Breen Safi Darden 《European journal of social psychology》2020,50(6):1157-1172
This article examines the role of organisational climate in women's social responses to sexism at work. We argue that after experiences of sexism, women “draw together” with other women when they perceive that the organisational climate is intolerant of sexism. We assess the role of organisational climate at three levels: peer-, manager-, and policy-level. We conducted a correlational study (Nstudy1 = 405) and two experimental studies (Nstudy2 = 377, Nstudy3 = 391), in which we examined women's experiences of sexism at work (measured in Study 1; manipulated in Studies 2 and 3). We also measured perceived tolerance of sexism at the peer-, manager- and policy-level in all studies. The main DVs were women's workplace friendships with other women in Studies 1 and 2, and closeness to female co-workers in Study 3. Results showed that perceived tolerance of sexism from peers was especially important in shaping women's social relationships following experiences of sexism; tolerance from managers or at the policy level had less consistent effects. Specifically, experiences with sexism were positively associated with female participants' reported friendship (Studies 1 and 2) and closeness (Study 3) with their female colleagues, but only when peers were perceived not to tolerate sexism. When peers were perceived to tolerate sexism, female participants did not respond to sexism by drawing together. 相似文献
935.
J. Mos J. H. C. M. Lammers A. M. van der Poel B. Bermond W. Meelis M. R. Kruk 《Aggressive behavior》1983,9(2):133-155
Large electrolytic lesions were placed in the midbrain central gray of male rats. Their effects on hypothalamically induced aggression, switch-off behaviour, and locomotion were investigated. A number of these animals were also tested for territorial intermale aggression in order to compare electrically induced and spontaneous aggression. Large lesions resulted in an increase of the current threshold to induce aggression by hypo-thalamic stimulation. Smaller, but still quite large, lesions decreased the threshold current for hypothalamic aggression. After the operation a decrease in the threshold for switch-off was present, both in the experimental and the control group. Current thresholds for locomotion were decreased after the lesions only in the experimental group. Spontaneous aggression was temporarily decreased after the lesion. No indication was found that other behavioural elements of the animal were distorted by the lesion. The parallel between the effects on spontaneous and electrically induced aggression makes it attractive to ascribe a role to the neural circuit of hypothalamus and central gray in territorial aggression. However, even with large lesions the animals were still capable of fighting, hence the central gray is not indispensable. An attempt was made to explain the differential effects that differently sized central gray lesions have on hypothalamic aggression. 相似文献
936.
937.
938.
939.
This experiment demonstrated that rats trained to display elevated levels of shock-induced aggression in a negative reinforcement paradigm displayed more boxing behavior than yoked control groups in a later test in which intruder rats were placed in the home cage of resident rats. Resident or intruder status did not affect the influence of the negative reinforcement procedure on the observed resident-intruder behavior of trained animals; however, naive intruders paired with trained residents displayed increased defensive behavior, suggesting that negative reinforcement for shock-induced aggression affected the behavior of these residents. 相似文献
940.
Eric F. Dubow 《Aggressive behavior》1988,14(5):315-324
The relation between aggression and peer social status was investigated in a group of 238 third-through fifth-grade children. Peer social status refers to the degree to which a child is accepted by his or her peer group. By asking children to nominate peers they “like most” and “like least,” one can identify children who are popular, rejected, neglected, or viewed as average within their peer group. Results indicated low to moderate correlations between peer-nominated aggression and global indices of social acceptance. More specifically, it was found that aggressive children largely comprised the rejected and average social status groups, but not the popular or neglected groups. Furthermore, analyses indicated that according to both peers and teachers, aggressive/rejected children showed academic and social-skill deficits, whereas aggressive children of average peer status exhibited adequate adjustment similar to that of nonaggressive/average-status children. These results suggest the importance of considering peer social status when identifying aggressive children in need of intervention and in determining which skill deficits to address. In addition, knowledge of an aggressive child's peer status might be useful in enhancing the predictability of adult adjustment. 相似文献