全文获取类型
收费全文 | 7333篇 |
免费 | 163篇 |
国内免费 | 1篇 |
出版年
2023年 | 36篇 |
2022年 | 58篇 |
2021年 | 78篇 |
2020年 | 110篇 |
2019年 | 93篇 |
2018年 | 273篇 |
2017年 | 260篇 |
2016年 | 318篇 |
2015年 | 171篇 |
2014年 | 132篇 |
2013年 | 432篇 |
2012年 | 469篇 |
2011年 | 470篇 |
2010年 | 153篇 |
2009年 | 93篇 |
2008年 | 221篇 |
2007年 | 167篇 |
2006年 | 160篇 |
2005年 | 1376篇 |
2004年 | 713篇 |
2003年 | 504篇 |
2002年 | 177篇 |
2001年 | 52篇 |
2000年 | 45篇 |
1999年 | 39篇 |
1998年 | 20篇 |
1997年 | 16篇 |
1994年 | 19篇 |
1992年 | 31篇 |
1991年 | 57篇 |
1990年 | 65篇 |
1989年 | 56篇 |
1988年 | 35篇 |
1987年 | 49篇 |
1986年 | 44篇 |
1985年 | 40篇 |
1984年 | 30篇 |
1983年 | 22篇 |
1979年 | 37篇 |
1975年 | 30篇 |
1974年 | 34篇 |
1973年 | 32篇 |
1972年 | 30篇 |
1971年 | 31篇 |
1970年 | 19篇 |
1969年 | 22篇 |
1968年 | 23篇 |
1967年 | 21篇 |
1966年 | 23篇 |
1965年 | 14篇 |
排序方式: 共有7497条查询结果,搜索用时 31 毫秒
941.
942.
943.
Miguel Angel Gonzalez-Torres Aranzazu Fernández-Rivas 《American journal of psychoanalysis》2015,75(4):416-437
Nationalist movements are emerging today everywhere in the world. Many of them display a high level of aggression and a negative attitude toward sexuality and especially female sexuality. Along with this, erotic fiction with a sadomasochistic orientation has achieved great success and has hundreds of millions of readers in the world. This collective fantasy allows some integration of aggression in sexual life while questioning liberal morality and its equality in gender roles and conservative morality and its idea of control over passion. Both phenomena may represent different responses to the appearance of a new female sexuality threatening the social structure we know. 相似文献
944.
945.
The principal aim of this study was to assess the level of selective attention and mental concentration before exams in a sample of university students and to determine a possible relationship between anxiety and reduction of levels of attention in this circumstance. A total of 403 university students, 176 men and 227 women, aged from 18 to 46 years, participated in the study. Of them, 169 were first‐year undergraduates, 118 were second to fourth‐year undergraduates and 116 were postgraduate Master's degree students. All of them completed the Spanish version of the Spielberger State‐Anxiety Inventory and the D2 Attention Test just before taking an exam. Our results showed that participants with lower levels of anxiety had higher levels of selective attention and mental concentration before the exam. These results specifically indicate that when anxiety levels are very high, this could over‐activate the orientating and alerting functions and to reduce the capacity of attentional control. These processes could have a negative impact on specific attentional processes and become a negative influence on performance in exams. 相似文献
946.
947.
da Silva WC Bonini JS Bevilaqua LR Izquierdo I Cammarota M 《Neurobiology of learning and memory》2006,86(1):100-106
Several evidences suggest that brain histamine is involved in memory consolidation but the actual contribution of the hippocampal histaminergic system to this process remains controversial. Here, we show that when infused into the CA1 region of the dorsal hippocampus immediately after training in an inhibitory avoidance task, but not later, histamine induced a dose-dependent promnesic effect without altering locomotor activity, exploratory behavior, anxiety state or retrieval of the avoidance response. The facilitatory effect of intra-CA1 histamine was mimicked by the histamine N-methyltransferase inhibitor SKF-91844 as well as by the H2 receptor agonist dimaprit and it was blocked completely by the H2 receptor antagonist ranitidine. Conversely, the promnesic action of histamine was unaffected by the H1 receptor antagonist pyrilamine, the H3 receptor antagonist, thioperamide, and the NMDAr polyamine-binding site antagonist ifenprodil. By themselves, ranitidine, pyrilamine, thioperamide, and ifenprodil did not affect IA memory consolidation. Our data indicate that, when given into CA1, histamine enhances memory consolidation through a mechanism that involves activation of H2 receptors; however, endogenous CA1 histamine does not seem to participate in the consolidation of IA memory at least at the post-training times analyzed. 相似文献
948.
Chen GA Lephuoc P Guzmán MR Rude SS Dodd BG 《Cultural diversity & ethnic minority psychology》2006,12(3):461-476
In this study the authors used cluster analysis to create racial identity profiles for a sample of Asian Americans using the People of Color Racial Identity Attitudes Scale (PCRIAS). A four-cluster solution was chosen: each cluster corresponded to one PCRIAS subscale and was named accordingly. Scores on the Asian American Racism-Related Stress Inventory and the Color-Blind Racial Attitudes Scale were compared across clusters. As expected, the Dissonance and Immersion clusters were characterized by relatively high racism-related stress and low levels of color-blind attitudes; the Conformity cluster showed roughly the opposite pattern. Surprisingly, the Internalization cluster showed a pattern similar to that for Conformity and thus may reflect "pseudoindependence" as discussed by Helms. 相似文献
949.
Perrino T Fernández MI Bowen GS Arheart K 《Cultural diversity & ethnic minority psychology》2006,12(1):70-83
In this cross-sectional study the authors examine condom use attempts and condom use among 305 high-risk, low-income African American women who reported having a main partner. Women who had recently attempted to convince their main partner to use condoms were almost 10 times more likely to have recently used condoms with their partner than women who had not made an attempt. Among the subsample of 116 women who had recently made a condom use attempt with their main partner, having a history of childhood abuse and having one's main partner raise infidelity questions in response to the condom use attempt were negatively associated with recent condom use with this partner. Findings provide initial insights into the importance of women's condom use attempts, as well as subgroups of women who may encounter special challenges convincing their main partner to use condoms. 相似文献
950.
This study investigated cardiovascular reactivity of hypertensive adults during periods of emotional stress. Two types of instructions were given at different moments, to the same subject, either to express or to suppress feelings during role-play. Expressing, but not inhibiting, emotions elicited significantly higher reactivity during responding to negative scenes, followed by responding during the positive interactions. Blood pressure increases in both expressing and inhibiting conditions, were also found during the instruction periods. Results indicated that socially demanding situations represent a stressor whose effects may vary depending on whether or not respondents regulate expression of emotions. It is suggested that the difficulty in expressing emotions found in some hypertensive individuals may have the function of controlling or reducing blood pressure reactivity. 相似文献