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   1378篇
  免费   109篇
  2023年   9篇
  2022年   18篇
  2021年   26篇
  2020年   31篇
  2019年   42篇
  2018年   67篇
  2017年   92篇
  2016年   72篇
  2015年   41篇
  2014年   55篇
  2013年   156篇
  2012年   80篇
  2011年   90篇
  2010年   53篇
  2009年   53篇
  2008年   72篇
  2007年   70篇
  2006年   55篇
  2005年   49篇
  2004年   40篇
  2003年   48篇
  2002年   41篇
  2001年   11篇
  2000年   18篇
  1999年   17篇
  1998年   16篇
  1997年   16篇
  1996年   7篇
  1995年   7篇
  1994年   7篇
  1993年   5篇
  1992年   9篇
  1991年   4篇
  1990年   4篇
  1989年   5篇
  1988年   5篇
  1987年   5篇
  1986年   9篇
  1985年   7篇
  1984年   6篇
  1983年   10篇
  1982年   8篇
  1981年   4篇
  1977年   4篇
  1976年   5篇
  1975年   4篇
  1973年   6篇
  1968年   3篇
  1967年   3篇
  1966年   3篇
排序方式: 共有1487条查询结果,搜索用时 15 毫秒
101.
In this paper, we explore what Canadian Arab youth do to navigate border and travel transit sites. Arab youth are the focus for this study because they are a neglected demographic of research in ethnic studies, compared to the more copious studies on Canadian Arabs. Our research empirically investigates the struggles that this youth demographic faces, and the efforts they undertake to manage their marginalization. Some of these efforts involve practices of cultural dissociation, fear management, and self-disciplining through behavioral self-surveillance. Drawing upon an existing body of research that recognizes the highly fraught and securitized nature of air travel and border transfer, particularly for Arab/Muslim populations, we use the findings from focus groups conducted in Kitchener-Waterloo to theoretically situate some of the real struggles of Canadian Arab youth. As prominent racialized and securitized identities in the War on Terror (WoT), Arab youth are often forced, or feel that they are forced to perform their Canadian-ness to substantiate their innocence, and in some cases, this requires minimalization, or even erasure of part of who they are.  相似文献   
102.
Sibling grief is linked to serious physical and mental health outcomes, yet remains the least researched of all family bereavement. This exploratory study created a shared sibling grief narrative. Open-ended interviews were conducted with 27 participants who lost a sibling. Primary themes included Shared Life: Identity Within the Sibling Arrangement; Sibling Death: Pivotal Moments in Time; Life After Sibling Loss: Emotional Suffering, Life After Sibling Loss: Missing Roles & Changing Relationships; and The Sibling Lives On. The following study findings clarify the overlooked impact that sibling death has on the surviving sibling and demonstrate the crucial need for more sibling loss research.  相似文献   
103.
104.
Physical inactivity and limited time spent in nature are major societal concerns that affect the mental and emotional health of youth in the United States. As such, this study explored girls’ perspectives of barriers to outdoor physical activity using a qualitative participatory action research method called photovoice. Six themes emerged from data representing the girls’ perspectives of barriers to outdoor physical activity through photovoice: Very Busy Schedule, Social Media, Health Concerns, Indoor Activity Instead of Outdoor Activity, Electronic Devices, and Way of Life. Researchers address how counselors can use these findings to advocate on this issue, given that counselors are called to advocate at multiple levels to address barriers that inhibit the growth and development of clients.  相似文献   
105.
We aimed to elicit emotion in patients with surgically circumscribed lesions of the prefrontal cortex (PFC) in order to elucidate the precise functional roles in emotion processing of the discrete subregions comprising the ventromedial PFC, including the medial PFC and orbitofrontal cortex (OFC). Three components of emotional reactivity were measured: subjective experience, behaviour, and physiological response. These included measures of self‐reported emotion, observer‐rated facial expression of emotion and measurements of heart rate and heart rate variability (HRV) during film viewing, and a measure of subjective emotional change since surgery. Patients with lesions to the ventromedial PFC demonstrated significant differences compared with controls in HRV during the film clips, suggesting a shift to greater dominance of sympathetic input. In contrast, patients with lesions restricted to the OFC showed significant differences in HRV suggesting reduced sympathetic input. They also showed less facial expression of emotion during positive film clips, and reported more subjective emotional change since surgery compared with controls. This human lesion study is important for refining theoretical models of emotion processing by the ventromedial PFC, which until now have primarily been based on anatomical connectivity, animal lesion, and human functional neuroimaging research. Such theories have implications for the treatment of a wide variety of emotional disorders.  相似文献   
106.
Until now, the equivalence property of reflexivity—matching physically identical stimuli to themselves after training on a set of arbitrary matching relations—has not been demonstrated in any animal, human or nonhuman. Previous reports of reflexivity have either implicitly or explicitly involved reinforced training on other identity matching relations. Here we demonstrate reflexivity without prior identity matching training. Pigeons received concurrent successive matching training on three arbitrary matching tasks: AB (hue–form), BC (form–hue), and AC (hue–hue with different hues in the A and C sets). Afterwards, pigeons were tested for BB (form–form) reflexivity. Consistent with the predictions of Urcuioli's ( 2008 ) theory, pigeons preferentially responded to B comparison stimuli that matched the preceding B sample stimuli in testing (i.e., BB reflexivity). A separate experiment showed that a slightly different set of arbitrary matching baseline relations yielded a theoretically predicted “anti‐reflexivity” (or emergent oddity) effect in two of five pigeons. Finally, training on just two arbitrary successive matching tasks (AB and BC) did not yield any differential BB responding in testing for five of eight pigeons, with two others showing reflexivity and one showing antireflexivity. These data complement previous findings of symmetry and transitivity (the two other properties of equivalence) in pigeons.  相似文献   
107.
When study is spaced across sessions (versus massed within a single session), final performance is greater after spacing. This spacing effect may have multiple causes, and according to the mediator hypothesis, part of the effect can be explained by the use of mediator-based strategies. This hypothesis proposes that when study is spaced across sessions, rather than massed within a session, more mediators will be generated that are longer lasting and hence more mediators will be available to support criterion recall. In two experiments, participants were randomly assigned to study paired associates using either a spaced or massed schedule. They reported strategy use for each item during study trials and during the final test. Consistent with the mediator hypothesis, participants who had spaced (as compared to massed) practice reported using more mediators on the final test. This use of effective mediators also statistically accounted for some – but not all of – the spacing effect on final performance.  相似文献   
108.
In two experiments, learners studied word pairs one or two times and took a final cued recall test. They studied each pair upon its initial presentation and decided whether they would restudy it later, take a practice test on it later (retrieval practice), or forego all further practice with the pair. Whether learners preferred restudying or testing depended upon conditions. Regardless of whether practice tests were followed by feedback, they chose to take practice tests relatively more often when items were easy and the lag or spacing interval between the first and second occurrence was short, whereas they chose to restudy relatively more when items were hard and the lag was long. That is, they preferred testing under conditions in which successful retrieval on the practice test was likely. In Experiment 2, we varied the number of points each item was worth if recalled on the final test. A high point value led to a marked increase in both the preference for testing when the lag was short and the preference for restudying when the lag was long. Results support the hypothesis that learners appreciate at some level that retrieval practice can be a more effective learning strategy than restudying. However, they appear to believe that successful retrieval is necessary to reap the benefits of retrieval practice. As a consequence, their tendency to choose testing is influenced by conditions (item difficulty and spacing interval) that affect the likelihood of successful practice-test retrieval.  相似文献   
109.
The current study examines the transactional processes between maternal negativity and child disruptive behavior during early childhood, using a sibling comparison design. This design allows for a more sophisticated test of the behavioral training hypothesis than is possible when only one child per family is included in the analysis as it excludes two confounders (passive gene-environment correlation and family-wide environmental influence). Three hundred and ninety-seven families were visited on three occasions when the target child was 1.5, 3 and 4.5 years old (920 children, 51.5% female). The target child and up to three older siblings per family were included in data collection and analysis. Mothers and fathers reported on children’s disruptive behavior and mothers reported on their negativity to children. Within-family cross-lag pathways, as well as a significant indirect effect through which children increased their own disruptive behavior via maternal negativity confirmed a behavioral training effect. Family level maternal negativity and sibling disruptive behavior showed high levels of stability over three to four years and no context effect for maternal negativity or sibling disruptive behavior was seen. The theoretical and clinical implications of these findings are discussed.  相似文献   
110.
Gunby, Rapp, Bottoni, Marchese and Wu (2017) taught three children with autism spectrum disorder to follow an instructor's gaze shift to select a specific item; however, Gunby et al. used different types of prompts with each participant. To address this limitation, we used a progressive training model for increasing gaze shift for three children with autism spectrum disorder. Results show that each participant learned to follow an adult's shift in gaze to make a correct selection. In addition, two participants displayed the skill in response to a parent's gaze shift and with only social consequences; however, the third participant required verbal instruction and tangible reinforcement to demonstrate the skill outside of training sessions.  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