首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   949篇
  免费   49篇
  国内免费   22篇
  2023年   20篇
  2022年   20篇
  2021年   29篇
  2020年   31篇
  2019年   45篇
  2018年   47篇
  2017年   49篇
  2016年   43篇
  2015年   23篇
  2014年   49篇
  2013年   93篇
  2012年   57篇
  2011年   36篇
  2010年   33篇
  2009年   44篇
  2008年   24篇
  2007年   43篇
  2006年   26篇
  2005年   22篇
  2004年   26篇
  2003年   18篇
  2002年   16篇
  2001年   16篇
  2000年   17篇
  1999年   13篇
  1998年   5篇
  1997年   6篇
  1996年   6篇
  1994年   8篇
  1993年   6篇
  1992年   7篇
  1991年   9篇
  1990年   11篇
  1989年   5篇
  1988年   13篇
  1987年   9篇
  1986年   7篇
  1985年   6篇
  1984年   6篇
  1983年   6篇
  1982年   5篇
  1981年   6篇
  1979年   7篇
  1978年   4篇
  1977年   4篇
  1976年   4篇
  1974年   8篇
  1972年   4篇
  1970年   5篇
  1968年   7篇
排序方式: 共有1020条查询结果,搜索用时 15 毫秒
141.
We describe a patient with progressive disorder of speech, without language impairment (opercular syndrome). Morphometric analysis confirmed asymmetric volume reduction of the precentral areas (>left). Diffusion imaging showed significant white matter changes in the left frontal lobe, with specific involvement of the left corticobulbar tract and connections between supplementary/pre‐supplementary motor areas and the frontal operculum (frontal aslant tract). We suggest that the organization of expressive language includes a ‘low level’ motor system principally distributed in the left hemisphere that shows specific susceptibility to neurodegeneration, distinct from neural systems subtending praxic, and cognitive aspects of language.  相似文献   
142.
Exposure to societal threat can elicit an increase in right-wing authoritarianism (RWA). In this study, using a quasi-experimental vignette design (Italian community sample, N = 86), we tested the moderating role of self-concept clarity (SCC). A moderated regression showed that manipulated societal threat to safety fostered RWA only among low SCC scorers. It is concluded that SCC is an important resource for individuals facing threat conditions.  相似文献   
143.
In the Italian academic system, a student can enroll for an exam immediately after the end of the teaching period or can postpone it; in this second case the exam result is missing. We propose an approach for the evaluation of a student performance throughout the course of study, accounting also for nonattempted exams. The approach is based on an item response theory model that includes two discrete latent variables representing student performance and priority in selecting the exams to take. We explicitly account for nonignorable missing observations as the indicators of attempted exams also contribute to measure the performance (within-item multidimensionality). The model also allows for individual covariates in its structural part.  相似文献   
144.
First language (L1) attrition in adulthood offers new insight on neuroplasticity and the role of language experience in shaping neurocognitive responses to language. Attriters are multilinguals for whom advancing L2 proficiency comes at the cost of the L1, as they experience a shift in exposure and dominance (e.g., due to immigration). To date, the neurocognitive mechanisms underlying L1 attrition are largely unexplored. Using event‐related potentials (ERPs), we examined L1‐Italian grammatical processing in 24 attriters and 30 Italian native‐controls. We assessed whether (a) attriters differed from non‐attriting native speakers in their online detection and re‐analysis/repair of number agreement violations, and whether (b) differences in processing were modulated by L1‐proficiency. To test both local and non‐local agreement violations, we manipulated agreement between three inflected constituents and examined ERP responses on two of these (subject, verb , modifier ). Our findings revealed group differences in amplitude, scalp distribution, and duration of LAN/N400 + P600 effects. We discuss these differences as reflecting influence of attriters’ L2‐English, as well as shallower online sentence repair processes than in non‐attriting native speakers. ERP responses were also predicted by L1‐Italian proficiency scores, with smaller N400/P600 amplitudes in lower proficiency individuals. Proficiency only modulated P600 amplitude between 650 and 900 ms, whereas the late P600 (beyond 900 ms) depended on group membership and amount of L1 exposure within attriters. Our study is the first to show qualitative and quantitative differences in ERP responses in attriters compared to non‐attriting native speakers. Our results also emphasize that proficiency predicts language processing profiles, even in native‐speakers, and that the P600 should not be considered a monolithic component.  相似文献   
145.
Oncological Genetic Counselling (CGO) allows the identification of a genetic component that increases the risk of developing a cancer. Individuals’ psychological reactions are influenced by both the content of the received information and the subjective perception of their own risk of becoming ill or being a carrier of a genetic mutation. This study included 120 participants who underwent genetic counselling for breast and/or ovarian cancer. The aim of the study was to examine the relation between their cancer risk perception and the genetic risk during CGO before receiving genetic test results, considering the influence of some psychological variables, in particular distress, anxiety and depression. Participants completed the following tools during a psychological interview: a socio-demographic form, Cancer Risk Perception (CRP) and Genetic Risk Perception (GRP), Hospital Anxiety and Depression Scale (HADS) and Distress Thermometer (DT). The data seem to confirm our hypothesis. Positive and significant correlations were found between the observed variables. Moreover, genetic risk perception determined an increase in depressive symptomatology and cancer risk perception led to an increase in anxious symptomatology, specifically in participants during cancer treatment. The present results suggest the importance of assessing genetic and cancer risk perception in individuals who undergo CGO, to identify those who are at risk of a decrease in psychological well-being and of developing greater psychological distress.  相似文献   
146.
147.
Evidence suggests that anxiety is associated with a shift of visual attention toward threatening stimuli in the environment, such as facial expressions (Mogg & Bradley, 1999). More recent evidence, however, indicates that anxiety may be better characterized by a failure to rapidly disengage the visual attention system away from threat-related facial expressions (Fox, Russo, Bowles, & Dutton, 2001). The present study further investigates this delayed disengagement hypothesis. Results show that high trait-anxious individuals, in contrast to low trait-anxious individuals, take longer to classify peripheral target letters when fearful facial expressions were presented at fixation relative to sad, happy, or neutral expressions. These findings demonstrate a specific tendency to dwell on fear-relevant stimuli, as opposed to negative information in general. These findings are considered from an evolutionary perspective and the possible role of delayed disengagement from threat in the maintenance of anxiety states is also discussed.  相似文献   
148.
The psychometric properties of the 18-item circadian type inventory (CTI) were examined in a non-shiftwork sample. Inter-item correlations for each scale were low to moderate. Confirmatory factor analysis (CFA) via structural equation modelling did not support the posited structure of the CTI. Principal components analysis and reliability analyses suggested the CTI is better represented by 11-items. The revised five item FR scale accounted for 27% of the variance, had stronger factor loadings and increased Cronbach alpha. The psychometric properties of the six item LV scale were marginally improved and explained 21% of the variance. The two-factor 11-item model was supported by CFA. Compared to the 18-item model, the 11-item model showed a marked improvement on several incremental fit indices and achieved a more parsimonious model fit. There was some indication of gender differences but a multi-group CFA indicated model parsimony was best for the invariant model. Gender difference needs to be further examined in large samples using a similar gender balance. It is concluded that the 11-item CTI is psychometrically superior to the original. However, its predictive efficacy needs to be examined in longitudinal studies.  相似文献   
149.
Green  Vanessa A.  Bigler  Rebecca  Catherwood  Di 《Sex roles》2004,51(7-8):371-386
Gender differences in play behavior are well documented. However, little work has examined the issue of variability of gender-typed behaviors within individuals or within genders. We investigated whether children's gender-typed toy play behavior is (a) variable across time within individuals, and (b) variable in response to exposure to counterstereotypic models. Extensive observations (N=203) were made of 8 highly gender-typed preschool children over 4 months. Variability was assessed by examining changes in the percentage of masculine and feminine toy play across successive days in which (a) gender neutral stories were read (within-individual variability) and (b) gender counterstereotypic stories were introduced (environmental variability). Variability of gender-typed play within individuals and in response to environmental stimuli was found among girls, but not among boys.  相似文献   
150.
Exploring Feminist Women's Body Consciousness   总被引:3,自引:0,他引:3  
In a qualitative investigation of young feminists' experience of body consciousness, 25 feminist women each participated in one of 6 focus groups examining the ways they experienced body image and negotiated cultural messages about women's appearance. Participants described their experience with objectification and its impact on their body image, sense of self, and relationships with other women. Although feminism provided an alternative way to understand cultural messages and reframe negative thoughts, this understanding did not necessarily affect aesthetic reactions. Participants experienced conflict between their feminist beliefs and their feelings about beauty ideals and their own appearance. This conflict is interpreted in terms of a mere exposure effect and existing gender/power relations. Suggestions of ways feminist psychologists can support young women's strategies for resisting negative cultural messages are provided.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号