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   627篇
  免费   456篇
  国内免费   41篇
  2023年   9篇
  2022年   6篇
  2021年   43篇
  2020年   18篇
  2019年   123篇
  2018年   145篇
  2017年   153篇
  2016年   94篇
  2015年   83篇
  2014年   37篇
  2013年   38篇
  2012年   26篇
  2011年   20篇
  2010年   3篇
  2009年   14篇
  2008年   12篇
  2007年   16篇
  2006年   6篇
  2005年   8篇
  2004年   6篇
  2003年   6篇
  2002年   11篇
  2001年   9篇
  2000年   6篇
  1999年   3篇
  1998年   3篇
  1997年   3篇
  1996年   3篇
  1995年   3篇
  1994年   5篇
  1993年   1篇
  1991年   2篇
  1990年   1篇
  1988年   1篇
  1987年   2篇
  1986年   1篇
  1985年   24篇
  1984年   26篇
  1983年   10篇
  1982年   22篇
  1981年   17篇
  1980年   29篇
  1979年   19篇
  1978年   12篇
  1977年   18篇
  1976年   11篇
  1975年   6篇
  1974年   9篇
  1973年   1篇
排序方式: 共有1124条查询结果,搜索用时 31 毫秒
111.
Trends in popular belief about same‐sex relationships have undergone noteworthy change in the United States over the last decade. Yet this change has been marked by stark polarizations and has occurred at varying rates depending upon regional, community, racial, religious, and individual family context. For queer youth and their families, this cultural transformation has broadened opportunities and created a new set of risks and vulnerabilities. At the same time, youth's increasingly open and playful gender fluidity and sexual identity is complicated by unique intersections of class, race, religion, and immigration. Effective family therapy with queer youth requires practitioner's and treatment models that are sensitive to those who bear the burden of multiple oppressions and the hidden resilience embedded in their layered identities. We present case examples of our model of family therapy which addresses refuge, supports difficult dialogs, and nurtures queerness by looking for hidden resilience in the unique intersections of queer youths' lives. These intersections provide transformational potential for youth, their families and even for family therapists as we are all nurtured and challenged to think more complexly about intersectionality, sexuality, and gender.  相似文献   
112.
113.
Abstract

This article attempts to explain the value that we assign to the presence of friends at the time when life is ending. It first shows that Aristotle’s treatment of friendship does not provide a clear account of such value. It then uses J. L. Austin’s notion of performativity to supplement one recent theory of friendship – given by Dean Cocking and Jeanette Kennett – in such a way that that theory can then account for friendship’s special value at our time of death.  相似文献   
114.
Seventy-two first, second and third grade boys and girls were administered seriation problems involving different combinations of shape and color variation. Success rates and latency scores were influenced by shape variation, but not by color variation or grade level. The failure to obtain predicted interactions between the effects of grade level and stimulus variation was attributed to the clarity of the relevant stimulus dimension.  相似文献   
115.
We examined the effects of hardiness on symptoms of posttraumatic stress (PTS) in postdeployed U.S. Army medics (N = 322). Medics endure a high level of work-related stress on and off the battlefield. Hardiness correlated negatively with reports of PTS symptoms and moderated the cumulative effects of years of military service on PTS symptoms. After controlling for socially desirable responding, PTS symptoms increased with years of military service for those with low levels of hardiness and decreased with years of military service for those with very high levels of hardiness. The military’s current resiliency training programs would likely benefit from incorporating hardiness measures and principles into its curriculum.  相似文献   
116.
Abstract

Although life event research has burgeoned in recent years, little attention has been paid to the prevalence of events among the elderly or their relationship to psychological well-being. This paper presents data from a three-wave longitudinal study of community elderly in Aberdeen. Negative life events were highly prevalent among both survivors [N=349) and non-survivors [N=108], but the relatively small differences between the groups indicate that attrition does not seriously affect longitudinal findings. Longitudinal analysis of survivors' data was performed using LISREL and yielded a model with a goodness of fit index of 0.918, demonstrating a close fit between the data and the model. The model parameters indicate that those in poor psychological state were more likely to report serious non-health events than health events, although the latter were more likely than the former to result in a decline in psychological well-being, even after prior psychological state was taken into account. While elderly people with low social integration experienced more severe reactions to life events in the short term than those with high social integration, there were no significant long term effects, even for those reporting highly stressful events. There was no evidence of a sub-group of elderly people lacked into a cycle of serious life events. However life events were not random occurrences; serious health events were more often reported by those with low education while women and those in lower social classes were more likely to report serious non-health events. Overall, long term disruption, directly attributable to life events, was minimal when viewed within the context of the community elderly's stable psychological state.  相似文献   
117.
The speed theory of cognitive aging posits that an age-related slowing of processing speed leads to impairments in higher order cognitive functions, such as memory. However, only few studies have examined the relationship between longitudinal changes in processing speed and longitudinal changes in memory performance. In the present study, data of 474 older adults (T1: 59–65 years) from the Interdisciplinary Longitudinal Study on Adult Development (ILSE) were used to investigate whether changes in speed and in memory were associated over a 4-year period. Performance changes in both constructs were analyzed using latent change factor models. Results show that latent changes in processing speed and latent changes in memory performance correlated with 0.61. This association is considerably lower than what would have been expected from cross-sectional data. Our longitudinal results suggest that although speed changes explain a substantial proportion of variance in memory changes, additional explanatory factors must be taken into consideration.  相似文献   
118.
It is well established that fundamental aspects of cognition such as memory and speed of processing tend to decline with age; however, there is substantial between-individual variability in levels of cognitive performance in older adulthood and in rates of change in cognitive abilities over time. Recent years have seen an increasing number of studies concerned with examining personality characteristics as possible predictors of some of this variability in cognitive aging. The purpose of this article is to review the literature, and identify patterns of findings regarding the relationships between personality (focusing on the Big-5) and cognitive ability across nonclinical populations of older adults. Possible mechanisms underlying associations of personality characteristics with cognition are reviewed, and assessed in the context of the current literature. Some relatively consistent relationships are identified, including positive associations between openness and cognitive ability, and associations of conscientiousness with slower rates of cognitive decline. However, the relationships between several personality traits and cognitive abilities in older adults remain unclear. We suggest some approaches to research design and analysis that may help increase our understanding of how personality differences may contribute to cognitive aging.  相似文献   
119.
During the past 25 years, researchers have examined the relationship between neurochemical variables and antisocial behavior in human adults, but none has been studied more intensely than the serotonin metabolite 5‐hydroxyindoleacetic acid (5‐HIAA). The goal of the current study was to employ meta‐analytic procedures to quantitatively evaluate selected evidence on the relationship between 5‐HIAA and antisocial behavior. It was expected that antisocial groups would show reduced cerebrospinal fluid 5‐HIAA compared with non–antisocial groups. This study also aimed to assess moderators that could influence the relationship between 5‐HIAA and antisociality. An electronic search and strict inclusion criteria identified 20 reports used in this meta‐analysis. Results showed a significant overall mean effect size (ES = –.45, P < .05) in the direction of lowered 5‐HIAA in antisocial vs. non–antisocial groups. A significant moderating effect for age indicated that groups comprised of antisocial individuals younger than 30 years exhibited larger negative effect sizes (ES = –1.37, P < .05) than groups with older subjects (ES = –.31, P < .05). There were no moderating effects for gender, target of violence, history of suicide, and alcoholism. Age effects may help explain age‐related declines in crime. The fact that effects did not differ based on other moderating variables supports models of reduced serotonin in antisocial individuals, regardless of type of crime or psychiatric problems. Aggr. Behav. 28:299–316, 2002. © 2002 Wiley‐Liss, Inc.  相似文献   
120.
以4-8岁儿童和大学生为被试,用虚拟生物图片为材料,采用2(不提供背景知识和提供背景知识)×6(年龄)的实验设计,考察背景知识对被试分类活动的影响及其年龄特点。结果发现:(1)两种实验条件下均有显著的年龄差异。(2)提供背景知识与否对不同年龄被试分类活动的影响不同,对4-5岁儿童分类活动的影响不显著,对6-8岁儿童及大学生分类活动的影响显著。  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