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   3457篇
  免费   1400篇
  2023年   2篇
  2022年   3篇
  2021年   73篇
  2020年   81篇
  2019年   384篇
  2018年   273篇
  2017年   386篇
  2016年   368篇
  2015年   343篇
  2014年   297篇
  2013年   529篇
  2012年   272篇
  2011年   203篇
  2010年   245篇
  2009年   214篇
  2008年   194篇
  2007年   117篇
  2006年   114篇
  2005年   122篇
  2004年   97篇
  2003年   108篇
  2002年   108篇
  2001年   84篇
  2000年   78篇
  1999年   39篇
  1998年   11篇
  1997年   10篇
  1996年   6篇
  1994年   7篇
  1993年   6篇
  1992年   7篇
  1991年   6篇
  1989年   5篇
  1988年   3篇
  1987年   6篇
  1986年   4篇
  1985年   6篇
  1984年   7篇
  1983年   2篇
  1982年   6篇
  1981年   3篇
  1980年   2篇
  1979年   8篇
  1977年   2篇
  1976年   2篇
  1974年   5篇
  1973年   2篇
  1972年   1篇
  1968年   1篇
  1951年   1篇
排序方式: 共有4857条查询结果,搜索用时 15 毫秒
991.
This study drew on uncertainty reduction and decision‐making theories to investigate how perceptions of approval of romantic relationships from family and friends can influence romantic partners' dynamics. Using a dyadic approach, the authors examined whether expectations of a partner's behavior in the relationship mediated the associations between perceived social network approval and relationship maintenance behaviors in a sample of 137 couples. The actor–partner interdependence mediation model (APIMeM) was applied. Results showed that women's and men's perceptions of approval from their own and their partner's network were associated with their own level of expectations of their partner's behaviors. In turn, women's and men's expectations were associated with their own and their partner's maintenance behaviors.  相似文献   
992.
Recognition of emotional facial expressions is a crucial skill for adaptive behavior that most often occurs in a multi‐sensory context. Affective matching tasks have been used across development to investigate how people integrate facial information with other senses. Given the relative affective strength of olfaction and its relevance in mediating social information since birth, we assessed olfactory–visual matching abilities in a group of 140 children between the ages of 3 and 11 years old. We presented one of three odor primes (rose, fish and no‐odor, rated as pleasant or unpleasant by individual children) before a facial choice task (happy vs. disgusted face). Children were instructed to select one of two faces. As expected, children of all ages tended to choose happy faces. Children younger than 5 years of age were biased towards choosing the happy face, irrespective of the odor smelled. After age 5, an affective matching strategy guided children's choices. Smelling a pleasant odor predicted the choice of happy faces, whereas smelling the unpleasant or fish odor predicted the choice of disgusted faces. The present study fills a gap in the developmental literature on olfactory‐visual affective strategies that affect decision‐making, and represents an important step towards understanding the underlying developmental processes that shape the typical social mind.  相似文献   
993.
Researchers have proposed that two processes featuring distinct types of inhibition support inhibitory control: a response threshold adjustment process involving the global inhibition of motor output and a conflict resolution process involving competitive inhibition among co‐active response alternatives. To target the development of these processes, we measured the reaching behavior of 5‐ to 10‐year‐olds (Experiment 1) and adults (Experiment 2) as they performed an Eriksen flanker task. This method provided two key measures: initiation time (the time elapsed between stimulus onset and movement onset) and reach curvature (the degree to which a movement deviates from a direct path to the selected target). We suggest that initiation time reflects the response threshold adjustment process by indexing the degree of motoric stopping experienced before a movement is started, while reach curvature reflects the conflict resolution process by indexing the degree of co‐activation between response alternatives over the course of a movement. Our results support this claim, revealing different patterns effects in initiation time and curvature, and divergent developmental trajectories between childhood and adulthood. These findings provide behavioral evidence for the dissociation between global and competitive inhibition, and offer new insight into the development of inhibitory control.  相似文献   
994.
A functional region of left fusiform gyrus termed “the visual word form area” (VWFA) develops during reading acquisition to respond more strongly to printed words than to other visual stimuli. Here, we examined responses to letters among 5‐ and 6‐year‐old early kindergarten children (N = 48) with little or no school‐based reading instruction who varied in their reading ability. We used functional magnetic resonance imaging (fMRI) to measure responses to individual letters, false fonts, and faces in left and right fusiform gyri. We then evaluated whether signal change and size (spatial extent) of letter‐sensitive cortex (greater activation for letters versus faces) and letter‐specific cortex (greater activation for letters versus false fonts) in these regions related to (a) standardized measures of word‐reading ability and (b) signal change and size of face‐sensitive cortex (fusiform face area or FFA; greater activation for faces versus letters). Greater letter specificity, but not letter sensitivity, in left fusiform gyrus correlated positively with word reading scores. Across children, in the left fusiform gyrus, greater size of letter‐sensitive cortex correlated with lesser size of FFA. These findings are the first to suggest that in beginning readers, development of letter responsivity in left fusiform cortex is associated with both better reading ability and also a reduction of the size of left FFA that may result in right‐hemisphere dominance for face perception.  相似文献   
995.
Social mindfulness refers to individual's respect and protection of others’ options in interpersonal interaction. The object‐choosing task is a traditional paradigm to assess social mindfulness. Individuals with high social mindfulness would choose the nonunique object so that others would have more options; on the contrary, individuals with low social mindfulness would choose the unique object, which limits others’ choices. No prior study has examined whether perceiving people with different levels of social mindfulness affects one's cooperation. Based on this background, two experiments were conducted to address this question. In both experiments, a confederate participant's (Player A's) social mindfulness was manipulated by setting the frequency that Player A chose the unique and the nonunique objects. Then, participants were asked to interact with Player A in the public goods game (Experiment 1) or in the centipede game (Experiment 2). Convergent results showed that compared to those interacting with a socially unmindful person, participants interacting with a person perceived as socially mindful contributed more resources in the public goods game and chose to pass on more rounds in the centipede game. These findings suggest that perception of others’ high social mindfulness enhances one's own cooperative behaviour.  相似文献   
996.
This paper examines the rosy side (positive emotion) and the blue side (negative emotion) of brand attachment in consumer–brand relationships and their distinct motivational triggers. Adopting attachment theory, self‐determination theory, and the relationship investment model, this paper provides a richer understanding of the positivity and negativity of emotional brand attachment in terms of consequential branding outcomes. Two hierarchical constructs—autonomous and controlled motivations—are proposed and examined using partial least squares path modelling. Data were collected through a 3‐stage survey to gain 507 samples of customers' brand attachments to 9 international car brands. This research reveals that customers' positive‐side (rosy‐side) emotional brand attachments are driven by autonomous motivations including satisfying the intrinsic motivation of pursuing pleasure and fulfilling needs for self‐determination and self‐congruence in the car brand consumption context. Customers' negative‐side (blue‐side) emotional brand attachment reflects feelings of separation distress, anxiety, and sadness that are triggered by their controlled motivations in car brand consumption contexts. The results indicate that positive emotions (the rosy side) of brand attachment are a more effective predictor of brand repurchasing intentions and word‐of‐mouth behaviours than are negative emotions (the blue side) of brand attachment. This study applies Deci and Ryan's autonomous and controlled motivations to explain the positivity and negativity of consumers' emotional brand attachment in brand–consumer relationships.  相似文献   
997.
Prism adaptation (PA) is a widely used intervention for (visuo‐)spatial neglect. PA‐induced improvements can be assessed by visual search tasks. It remains unclear which outcome measures are the most sensitive for the effects of PA in neglect. In this review, we aimed to evaluate PA effects on visual search measures. A systematic literature search was completed regarding PA intervention studies focusing on patients with neglect using visual search tasks. Information about study content and effectiveness was extracted. Out of 403 identified studies, 30 met the inclusion criteria. The quality of the studies was evaluated: Rankings were moderate‐to‐high for 7, and low for 23 studies. As feature search was only performed by five studies, low‐to‐moderate ranking, we were limited in drawing firm conclusions about the PA effect on feature search. All moderate‐to‐high‐ranking studies investigated cancellation by measuring only omissions or hits. These studies found an overall improvement after PA. Measuring perseverations and total task duration provides more specific information about visual search. The two (low ranking) studies that measured this found an improvement after PA on perseverations and duration (while accuracy improved for one study and remained the same for the other). This review suggests there is an overall effect of PA on visual search, although complex visual search tasks and specific visual search measures are lacking. Suggestions for search measures that give insight in subcomponents of visual search are provided for future studies, such as perseverations, search path intersections, search consistency and using a speed–accuracy trade‐off.  相似文献   
998.
Acquired social disinhibition refers to a debilitating behavioural syndrome commonly reported after a severe traumatic brain injury (TBI) and is characterized by inappropriate social behaviour, often described as immaturity and insensitivity towards others. These behaviours can have enduring effects on the social capability of the individual and their relationships with others. However, research into socially disinhibited behaviour after TBI has been thwarted by a lack of consensus in the literature on definition and measurement. This review provides an overview of our current understanding of the definition, measurement, prevalence, associated outcomes, neuropathology, and underlying mechanisms of social disinhibition after TBI. In addition, suggestions are made for future research to further our understanding of this syndrome with the eventual aim of rehabilitating problematic behaviours. It is concluded that an improved understanding of what causes disinhibited behaviour after TBI will be necessary for the development of effective treatment strategies aimed at the rehabilitation of underlying impairments.  相似文献   
999.
The paper uses insights from several Social Psychological theories to study the cultural artifacts of the Merry Cemetery (MC) of S?pân?a (Romania). In the first study we have content analysed the epitaphs written on the painted crosses of the MC and the results show that the epitaphs reflect personal as well as social identity (in which individuals are described as members of both the family and the community) and play two important roles for the community members: they serve as a message to the dear ones and as an external memory of the community's social norms and shared worldview. The second study explored the social representation of the MC in the local community. The results show that the social representation of the MC clusters around three main themes: its symbolic, economic and local identity value. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   
1000.
The main objective of this study is to settle a rigorous field of decision analysis for rubber tree clones selection. Nowadays, there does not exist any process based upon a rigorous method to select the best clone to be plant in order to get the highest return on investment. The only known selection method is to use the experience of different protagonists acting in the plantation. So, we need a tool that takes into account very important criteria in order to achieve the main objective. This goal is achieved by using multicriterion analysis methods to the clone selection. The ranking procedure uses Elimination and Choice Expressing the Reality (ELECTRE III). For each criterion, indifference and preference thresholds are determined after establishing the relative importance of each criterion including rubber tapping, cumulative production during 15 years, cumulative production between 15 and 25 years, wind resistance, disease resistance, physiological resistance, grafting and quality of the rubber. Copyright © 2011 John Wiley & Sons, Ltd.  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