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   413篇
  免费   48篇
  国内免费   9篇
  2023年   11篇
  2022年   12篇
  2021年   13篇
  2020年   27篇
  2019年   25篇
  2018年   18篇
  2017年   33篇
  2016年   29篇
  2015年   16篇
  2014年   18篇
  2013年   89篇
  2012年   8篇
  2011年   21篇
  2010年   13篇
  2009年   19篇
  2008年   18篇
  2007年   23篇
  2006年   11篇
  2005年   16篇
  2004年   8篇
  2003年   5篇
  2002年   6篇
  2001年   4篇
  2000年   4篇
  1999年   2篇
  1998年   3篇
  1997年   1篇
  1996年   1篇
  1994年   3篇
  1991年   1篇
  1987年   1篇
  1986年   1篇
  1984年   3篇
  1982年   1篇
  1980年   1篇
  1979年   2篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
排序方式: 共有470条查询结果,搜索用时 15 毫秒
451.
It is well established that smoking is associated with impaired mental health and sleep problems. However, the possible effects of passive smoking on cognitive and emotional characteristics have not previously been evaluated in adolescents. We investigated the association between passive smoking and cognitive and emotional function, and sleep patterns in 940 adolescent girls. The girls were divided into two groups [305 exposed subjects and 635 non-exposed subjects (the controls)]. The passive smokers had a significantly lower cognitive function and higher depression, aggression, and insomnia scores compared to the control group (P?<?0.05). No significant difference was detected with respect to day-time sleepiness and sleep apnea. Logistic regression analyses showed that the passive smokers were more likely than the controls to have cognitive impairments, depressive mood, aggressive behavior, and insomnia. Adolescent passive smokers had significant differences in their cognitive abilities and emotional function.  相似文献   
452.
Two common behavioral economic simulation tasks used to study cigarette smoking are the Cigarette Purchase Task, a measure of cigarette demand, and delay discounting, a measure of the subjective value of rewards as a function of delays to delivery. Few studies have evaluated whether combining these tasks enhances understanding of smoking beyond either alone. The current study represents an initial evaluation of the intersection between cigarette demand indices and delay discounting among pregnant smokers by examining associations between these measures and whether a woman makes antepartum quit attempts before entering prenatal care (a reliable predictor of eventual quitting). Participants were 159 pregnant women enrolled in a smoking‐cessation trial. Low O max and shallow discounting were each associated with antepartum quit attempts. Participants were next categorized into four subgroups (low O max, shallow discounting; low O max, steep discounting; high O max, shallow discounting; high O max, steep discounting) using median splits. Those with shallow discounting and low O max were more likely to have made quit attempts than each of the other three subgroups. That is, steep discounting appears to undermine the association of low O max and efforts to quit smoking during pregnancy while high O max overshadows any protective influence associated with shallow discounting.  相似文献   
453.
454.
Neighborhood context, including the physical and social environment, has been implicated as important contributors to positive youth development. A transactional approach to neighborhood asserts that place and people are mutually constitutive; negative perceptions of place are intrinsically bound with negative portrayals of stigmatized groups, including youth. Adult perceptions of neighborhood youth may contribute to an increased sense of alienation and youth antisocial behavior. This study uses street‐intercept interviews with adults (N = 408) to examine the relationship between neighborhood conditions and adult support for neighborhood youth. A path model was used to examine the direct and indirect relationship of neighborhood constructs (safety, aesthetic quality, and walkability) on adult support for neighborhood youth. Neighborhood aesthetic quality and the walking environment were directly associated with adult support for youth, whereas perceived safety was indirectly associated. Collective efficacy partially explained these relationships. Findings support theorized relationships between people and places; improvements to neighborhood physical environment may directly impact resident adults’ perceptions of neighborhood young people.  相似文献   
455.
In this paper, the author, a doctoral student, examines his past to understand why spirituality is important in his present life and why it is important to integrate spirituality within the academy for young adults. In this personal narrative, the author discusses how spirituality becomes important for him from his childhood, as he grows up in Kuwait and Bangladesh and is subjected to numerous forms of psychological violence from his family, his school and larger society. The author then examines how his spirituality is negated as he immigrates to Canada and joins the Canadian academy as a young adult student. Finally, the author discusses why it is important to incorporate spirituality within the academy for young adults.  相似文献   
456.
This paper discusses an ongoing research project on contemporary forms of youth and young adult spirituality, highlighting issues in the history and definition of spirituality and in development of appropriate qualitative methods of investigation. Previous research on the topic has been bedevilled by difficulties of definition. 'Spirit' and 'spirituality' have a long history in both philosophy and religion and surviving senses of the terms include both religious and non-religious meanings. This paper suggests that 'lexical' definitions based on usage prove unwieldy because of widely varying and conflicting contents. Only a 'stipulative' definition will serve to provide a research project with a clear focus; our definition of spirituality as 'a conscious way of life based on a transcendent referent' is explained and defended. Next, we outline the distinctive features of our methodology: no direct mention of the term spirituality, an emphasis on personal narration and the use of evocative techniques. We conclude by outlining the 10 dimensions of spirituality which we have developed from our initial investigations.  相似文献   
457.
青少年吸烟行为的预防与干预   总被引:15,自引:0,他引:15  
方晓义  林丹华 《心理学报》2003,35(3):379-386
以两所普通中学的573名初一、初二、高一和高二的学生为被试,随机将每个年级的两个斑分成干预组和控制组,干预组接受名为“远离香烟”(SAFT)的预防和干预方案,方案包括四个成分:即健康教育、识别并抵制同伴压力、大众媒体影响以及吸烟认知,以达到延缓或减少青少年吸烟行为的目的。方案共包括7次活动,每次45分钟,每周开展一次活动,共持续7周。结果发现:(1)干预组后测中的上个月吸烟行为比前测降低了5.2%,而控制组后测吸烟行为则上升了2.3%。同样的趋势表现在不同性别、不同年级的青少年身上;(2)预防和干预方案对减少干预组偶尔吸烟者的吸烟行为尤其有效;(3)在吸烟认知的转变上,干预组后测比前测更显著或接近显著地反对吸烟会带来友谊和形象等方面的好处,更赞同吸烟的危害性。而控制组则正相反;(4)方案可以有效地提高干预组的抵制技能;(5)在所有的干预成分中,只有后测吸烟与友谊的认识以及吸烟危害认识可以显著地预测干预组青少年的后测吸烟行为,而没有一个变量可预测控制组后测吸烟行为;(6)预防和干预条件通过后测吸烟好处、吸烟危害认识间接地对青少年后测吸烟行为产生影响。  相似文献   
458.
Objective: Smoking is one of the leading public health problems worldwide. The inability to quit smoking may be the result of the amplified value of smoking-related cues and inhibitory control deficits. Previous research has shown that pairing substance-related cues with no-go trials in go/no-go training reduces the value of these cues, an effect known as devaluation. The current experiment investigated the devaluation effect of go/no-go training on smoking-related cues, and compared this effect between smokers and nonsmokers.

Design and Main Outcome Measures: 39 smokers and 43 nonsmokers were trained to respond immediately to neutral stimuli, but inhibit their reaction when smoking stimuli were presented. Before and after training, participants evaluated smoking and neutral stimuli, where part of these stimuli were subsequently presented in the training, and the other part was not used in training.

Results: Not responding to smoking stimuli in go/no-go training decreased subsequent evaluations of trained smoking stimuli compared to untrained smoking stimuli, thereby replicating food and alcohol studies and extending the devaluation effect to smoking-related cues. This devaluation effect was found for both smokers and non-smokers.

Conclusion: Smoking-related cues can be devaluated in smokers and non-smokers, thereby showing the potential for Go/No-Go training in smoking cessation interventions.  相似文献   

459.
460.
ABSTRACT

Tobacco addiction and obsessive-compulsive symptoms (OCS; intrusive thoughts or impulses that cause distress and rituals) are both mediated by compulsivity and negative reinforcement. Little evidence exists to guide theory, research, treatment, and population-based prevention of this co-occurrence. We propose a conceptual model of OCS-smoking co-occurrence in which smokers with elevated OCS capitalize on smoking to assuage OCS. This secondary analysis examined associations between OCS levels and self-reported smoking motives that are model-concordant: i) negative reinforcement—smoking for relief; ii) sensorimotor—benefits of behaviors and sensations of the tobacco self-administration ritual; and iii) habitual—smoking without conscious control. A community sample of cigarette smokers enrolled in a cessation trial (N = 458; 47.2% female; M age = 36.9; SD = 13.6) completed pre-quit self-report measures of OCS levels and smoking motives. Regression models adjusted for sociodemographic covariates and non-OCS psychopathologies indicated that OCS level was positively associated with each model-concordant motive. OCS level was also correlated with tobacco dependence severity and greater withdrawal symptom severity experienced during previous quit attempts. Those with higher OCS report greater motivation to smoke for negative reinforcement, sensorimotor behavioral-ritualistic, habit/automaticity, and stimulation reasons. Further examination of the proposed model of OCS-smoking co-occurrence is warranted to guide theory and intervention for this population.  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