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   2175篇
  免费   28篇
  2203篇
  2024年   12篇
  2023年   13篇
  2022年   11篇
  2021年   27篇
  2020年   37篇
  2019年   46篇
  2018年   65篇
  2017年   79篇
  2016年   75篇
  2015年   56篇
  2014年   59篇
  2013年   265篇
  2012年   121篇
  2011年   112篇
  2010年   96篇
  2009年   61篇
  2008年   91篇
  2007年   112篇
  2006年   83篇
  2005年   68篇
  2004年   72篇
  2003年   61篇
  2002年   58篇
  2001年   37篇
  2000年   31篇
  1999年   17篇
  1998年   24篇
  1997年   30篇
  1996年   26篇
  1995年   20篇
  1994年   19篇
  1993年   21篇
  1992年   26篇
  1991年   11篇
  1990年   20篇
  1989年   20篇
  1988年   17篇
  1987年   19篇
  1985年   9篇
  1984年   11篇
  1983年   11篇
  1982年   21篇
  1981年   13篇
  1980年   12篇
  1979年   7篇
  1978年   16篇
  1977年   6篇
  1976年   8篇
  1971年   6篇
  1966年   8篇
排序方式: 共有2203条查询结果,搜索用时 0 毫秒
211.
Profile data abound in a broad range of research settings. Often it is of considerable theoretical importance to address specific structural questions with regard to the major pattern as included in such data. A key challenge in this regard pertains to identifying which type of interaction (double ordinal, mixed ordinal/disordinal, double disordinal) most adequately fits the major pattern in a profile data set at hand. In the present article a novel methodology is proposed to deal with this challenge. This methodology is based on constrained and unconstrained versions of a recently introduced 2-mode clustering model, the real-valued hierarchical classes model. The methodology is illustrated using empirical Person × Situation profile data on altruism.  相似文献   
212.
Raising an adolescent or adult child with a developmental disability confers exceptional caregiving challenges on parents. We examined trajectories of 2 indicators of emotional well-being (depressive symptoms and anxiety) in a sample of primarily Caucasian mothers (N = 379; M age = 51.22 years at Time 1) of adolescent and adult children with an autism spectrum disorder (ASD; M age = 21.91 years at Time 1, 73.2% male). We also investigated within-person associations of child context time-varying covariates (autism symptoms, behavior problems, residential status) and maternal context time-varying covariates (social support network size and stressful family events) with the trajectories of emotional well-being. Data were collected on 5 occasions across a 10-year period. Average patterns of stable (depressive symptoms) and improved (anxiety) emotional well-being were evident, and well-being trajectories were sensitive to fluctuations in both child and maternal context variables. On occasions when behavior problems were higher, depressive symptoms and anxiety were higher. On occasions after which the grown child moved out of the family home, anxiety was lower. Anxiety was higher on occasions when social support networks were smaller and when more stressful life events were experienced. These results have implications for midlife and aging families of children with an ASD and those who provide services to these families.  相似文献   
213.
Prior evidence has shown that aversive emotional states are characterised by an attentional bias towards aversive events. The present study investigated whether aversive emotions also bias attention towards stimuli that represent means by which the emotion can be alleviated. We induced disgust by having participants touch fake disgusting objects. Participants in the control condition touched non-disgusting objects. The results of a subsequent dot-probe task revealed that attention was oriented to disgusting pictures irrespective of condition. However, participants in the disgust condition also oriented towards pictures representing cleanliness. These findings suggest that the deployment of attention in aversive emotional states is not purely stimulus driven but is also guided by the goal to alleviate this emotional state.  相似文献   
214.
Koenderink JJ 《Perception》2002,31(9):1033-1036
  相似文献   
215.
Participants were required to make a saccade to a uniquely colored target while ignoring the presentation of an onset distractor. The results provide evidence for a competitive integration model of saccade programming that assumes endogenous and exogenous saccades are programmed in a common saccade map. The model incorporates a lateral interaction structure in which saccade-related activation at a specific location spreads to neighboring locations but inhibits distant locations. In addition, there is top-down, location-specific inhibition of locations to which the saccade should not go. The time course of exogenous and endogenous activation in the saccade map can explain a variety of eye movement data, including endpoints, latencies, and trajectories of saccades and the well-known global effect.  相似文献   
216.
In the present study, caregiver burnout among the intimate partners of 106 cancer patients and 88 patients with multiple sclerosis was assessed. This study examined how burnout is related to marital quality and perceptions of inequity in the relationship. LISREL analyses showed that higher perceptions of inequity are strongly associated with higher emotional exhaustion and depersonalization, and lower feelings of personal accomplishment. Intimate partners of both cancer patients and patients with multiple sclerosis are relatively likely to experience burnout when they feel that they do not invest or benefit enough in the exchange with their ill partner. The relationship between inequity and burnout held when general marital quality, gender, the duration of the illness, the physical and psychological condition of the ill partner, and support from other persons were controlled for. This study shows that perceptions of equity or balance in the relationship between patients and their intimate partners are important for preventing caregiver burnout and for enhancing positive caregiver experiences.  相似文献   
217.
Selective attention to relevant targets has been shown to depend on the availability of working memory (WM). Under conditions of high WM load, processing of irrelevant distractors is enhanced. Here we showed that this detrimental effect of WM load on selective attention efficiency is reversed when the task requires global- rather than local-level processing. Participants were asked to attend to either the local or the global level of a hierarchical Navon stimulus while keeping either a low or a high load in WM. In line with previous findings, during attention to the local level, distractors at the global level produced more interference under high than under low WM load. By contrast, loading WM had the opposite effect of improving selective attention during attention to the global level. The findings demonstrate that the impact of WM load on selective attention is not invariant, but rather is dependent on the level of the to-be-attended information.  相似文献   
218.
The present study compared ratings of a standardized sample of child behavior problems across informants and examined the effects of informant personality traits on child behavior ratings by mothers, teachers, and group-care workers. Participants were 55 clinic-referred children, aged 6–12 years. All informants watched and rated the same 17-min videotaped behavior sample of a familiar target child. Independent trained observers rated the same videotapes to provide criterion ratings. Informants personality traits were assessed using the NEO Five Factor Personality Inventory. Results showed that mothers reported fewer behavior problems than did the professionals, that the informants who were familiar with the child reported more behavior problems than did the independent observers, and that higher levels of informant neuroticism were related to higher ratings of child behavior problems in the case of the professionals, but not in the case of the mothers. In addition, group-care workers who were less extraverted and open were likely to report more child behavior problems than group-care workers with normal levels of extraversion and openness. Finally, no relations were found between agreeableness or conscientiousness and ratings of child behavior. Findings suggest that professionals who work with children are not immune to distortions based on their own personality.  相似文献   
219.
This article argues that there is no sound basis for thinking that we have a general and strong duty to rectify disparities of wealth around the world, apart from the special case where some become wealthy by theft or fraud. The nearest thing we have to a rational morality for all has to be built on the interests of all, and they include substantial freedoms, but not substantial entitlements to others assistance. It is also pointed out that the situation of the worlds poor is not that of victims of disasters, but simply of less-developed technology, which can be repaired by full and free trade relations with others. The true savior of the worlds poor is the businessman, not the missionary. What we do need to do is strike down barriers to commerce, rather than requisition aid.  相似文献   
220.
Recent research suggests that the turnover process is not fully captured by the traditional sequential model relating job dissatisfaction to subsequent turnover. The present study contributes to this research by modeling within-individual job satisfaction as a function of job change patterns to determine if individual work attitudes change systematically with the temporal turnover process. Specifically, the authors hypothesized that low satisfaction would precede a voluntary job change, with an increase in job satisfaction immediately following a job change (the honeymoon effect), followed by a decline in job satisfaction (the hangover effect). Though this pattern is suggested in the literature, no prior research has integrated and tested this complete temporal model within individuals. Findings based on a sample of managers supported the proposed honeymoon-hangover effect.  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