全文获取类型
收费全文 | 2219篇 |
免费 | 144篇 |
国内免费 | 95篇 |
出版年
2023年 | 30篇 |
2022年 | 15篇 |
2021年 | 38篇 |
2020年 | 70篇 |
2019年 | 44篇 |
2018年 | 54篇 |
2017年 | 85篇 |
2016年 | 80篇 |
2015年 | 49篇 |
2014年 | 69篇 |
2013年 | 295篇 |
2012年 | 110篇 |
2011年 | 102篇 |
2010年 | 91篇 |
2009年 | 94篇 |
2008年 | 103篇 |
2007年 | 124篇 |
2006年 | 95篇 |
2005年 | 101篇 |
2004年 | 82篇 |
2003年 | 55篇 |
2002年 | 68篇 |
2001年 | 40篇 |
2000年 | 52篇 |
1999年 | 25篇 |
1998年 | 28篇 |
1997年 | 23篇 |
1996年 | 21篇 |
1995年 | 20篇 |
1994年 | 24篇 |
1993年 | 19篇 |
1992年 | 28篇 |
1991年 | 28篇 |
1990年 | 25篇 |
1989年 | 19篇 |
1988年 | 23篇 |
1987年 | 16篇 |
1986年 | 20篇 |
1985年 | 21篇 |
1984年 | 20篇 |
1983年 | 15篇 |
1982年 | 12篇 |
1981年 | 17篇 |
1980年 | 11篇 |
1979年 | 16篇 |
1978年 | 12篇 |
1977年 | 12篇 |
1976年 | 7篇 |
1974年 | 8篇 |
1972年 | 9篇 |
排序方式: 共有2458条查询结果,搜索用时 31 毫秒
141.
While the gender gap in mathematics and science has narrowed, men pursue these fields at a higher rate than women. In this study, 165 men and women at a university in the northeastern United States completed implicit and explicit measures of science stereotypes (association between male and science, relative to female and humanities), and gender identity (association between the concept “self” and one’s own gender, relative to the concept “other” and the other gender), and reported plans to pursue science-oriented and humanities-oriented academic programs and careers. Although men were more likely than women to plan to pursue science, this gap in students’ intentions was completely accounted for by implicit stereotypes. Moreover, implicit gender identity moderated the relationship between women’s stereotypes and their academic plans, such that implicit stereotypes only predicted plans for women who strongly implicitly identified as female. These findings illustrate how an understanding of implicit cognitions can illuminate between-group disparities as well as within-group variability in science pursuit. 相似文献
142.
This study examined relations of achievement goals of writers who are speakers of English as a foreign language (EFL), the frequency of their writing strategy use, and the quality of their writing from a multiple goals perspective. The goal profiles of 57 EFL college students with similar writing proficiency were based on rating items of an unpublished scale; Group 1 had strong mastery and strong performance-approach goals, and two groups included students with only one strong mastery (Group 2) or performance (Group 3) goal. Think-aloud protocols indicated that the participants adopted 21 strategies in an argumentative writing task, classified into five categories. Group 1 was found to use writing strategies of monitoring or evaluating, revising, and compensating significantly more often than the other two groups, and produced better essays. Strong mastery and performance-approach goals might be beneficial for EFL college writers. 相似文献
143.
Cereste HX 《Journal of religion and health》2011,50(3):527-542
A female physician who was serving as a first-year medicine resident in Manhattan in September 2001 writes this paper. It
details her experience of signing up for military service as a result of the September 11th attack on the United States. She
lays out the surroundings, atmosphere, and reactions of those around her during the attack and details her own personal motivations
for joining the military, her need to take control and help those in need heal while also trying to heal herself. Grateful,
yet haunted by her experience, she provides an intimate glimpse into her time serving as a combat physician at a trauma hospital
in Balad, Iraq during the 2007 military surge. A trained geriatrician and palliative care physician she recounts the stories
of several patients that have forever shaped her life and explores the contradictions and ethical challenges she faced while
caring for them ultimately struggling with the uncertainty of whether what she was truly doing was good for those she served
or herself. 相似文献
144.
The objective of this study investigated cognitive impairments and their correlations with fractional anisotropy (FA) and mean diffusivity (MD) in patients with neuromyelitis optica (NMO) without visible lesions on conventional brain MRI during acute relapse. Twenty one patients with NMO and 21 normal control subjects received several cognitive tests to assess cognitive function. Head diffusion tensor imaging (DTI) of all patients with NMO were collected with a 3-T MR system. Correlations of cognitive test scores and whole brain FA and MD were examined by voxel-based analysis. Region-of-interest analysis was applied to the significantly correlated regions which the most frequently appeared. We found that NMO patients without visible brain lesions had significantly impaired learning and memory, decreased information processing speed, and damaged attention compared with normal control subjects. These impaired cognitive domains were significantly correlated with FA and MD in local regions of corpus callosum, anterior cingulate and medial frontal cortex. In corpus callosum of NMO patients, mean FA was significantly lower and mean MD higher than normal control subjects. Our findings suggest that cognitive impairments in learning and memory, information processing speed and attention occur in NMO patients without visible brain lesions during acute relapse. The impairments in immediate and short-term memory in NMO patients may be due to information encoding deficits in the process of information acquisition. The corpus callosum of such patients may have local microscopic damages that play a role in cognitive impairments during acute relapse. 相似文献
145.
Cynthia Suveg Marni L. Jacob Monica Whitehead Anna Jones Julie Newman Kingery 《Anxiety, stress, and coping》2014,27(5):494-508
Social difficulties are commonly associated with anxiety disorders in youth, yet are not well specified in the literature. The aim of this study was to identify patterns of social experiences in clinically anxious children and examine the associations with indices of emotional functioning. A model-based cluster analysis was conducted on parent-, teacher-, and child-reports of social experiences with 64 children, ages 7–12 years (M = 8.86 years, SD = 1.59 years; 60.3% boys; 85.7% Caucasian) with a primary diagnosis of separation anxiety disorder, social phobia, and/or generalized anxiety disorder. Follow-up analyses examined cluster differences on indices of emotional functioning. Findings yielded three clusters of social experiences that were unrelated to diagnosis: (1) Unaware Children (elevated scores on parent- and teacher-reports of social difficulties but relatively low scores on child-reports, n = 12), (2) Average Functioning (relatively average scores across all informants, n = 44), and (3) Victimized and Lonely (elevated child-reports of overt and relational victimization and loneliness and relatively low scores on parent- and teacher-reports of social difficulties, n = 8). Youth in the Unaware Children cluster were rated as more emotionally dysregulated by teachers and had a greater number of diagnoses than youth in the Average Functioning group. In contrast, the Victimized and Lonely group self-reported greater frequency of negative affect and reluctance to share emotional experiences than the Average Functioning cluster. Overall, this study demonstrates that social maladjustment in clinically anxious children can manifest in a variety of ways and assessment should include multiple informants and methods. 相似文献
146.
Xiao He Langlais Michael R. Anderson Edward Greene Shannon 《Journal of child and family studies》2022,31(6):1582-1595
Journal of Child and Family Studies - Despite many mothers’ interest in establishing romantic relationships following divorce, some worry about the impacts of dating transitions, such as... 相似文献
147.
计算机化分类测验(Computerized Classification Testing, CCT)能够高效地对被试进行分类, 已广泛应用于合格性测验及临床心理学中。作为CCT的重要组成部分, 终止规则决定测验何时停止以及将被试最终划分到何种类别, 因此直接影响测验效率及分类准确率。已有的三大类终止规则(似然比规则、贝叶斯决策理论规则及置信区间规则)的核心思想分别为构造假设检验、设计损失函数和比较置信区间相对位置。同时, 在不同测验情境下, CCT的终止规则发展出不同的具体形式。未来研究可以继续开发贝叶斯规则、考虑多维多类别情境以及结合作答时间和机器学习算法。针对测验实际需求, 三类终止规则在合格性测验上均有应用潜力, 而临床问卷则倾向应用贝叶斯规则。 相似文献
148.
149.
In agreement with the hypothesis of differential treatment of the intrinsic (color, shape, category…) and extrinsic (position, orientation…) visual characteristics along the ventral and dorsal pathways of the visual system (Milner & Goodale, 1995), the study of temporal order judgment (TOJ) of the variation of two visual attributes highlighted the perceptual asynchrony even though these changes occur synchronously. In this context, we investigated the role of action in the perception of perceptual asynchrony, especially the effect of a reaching movement on the TOJ of position and color changes of a target occurring at different times of movement execution. In the absence of voluntary action, the point of subjective simultaneity (PSS) shows that the color changes must occurr 46.6 ms before the change of position to give rise to a synchronous perception of these two changes. Performing a reaching movement reduced significantly the PSS (12.4 ms), but only if the changes occur near movement end-point. If changes occur during movement execution, the PSS (40.2 ms) was not different from that obtained in the perceptual condition. These results suggest that endogenous signals associated with voluntary motor action contribute to the reduction of perceptual asynchrony in relation to the goal of the action. We discuss the possibility that, in the context of the action, the motor system contributes to the binding of objects sensory attributes as well as to the sense of agency. 相似文献
150.
Cynthia L.S. Pury Thomas W. Britt Heidi M. Zinzow Mary Anne Raymond 《The journal of positive psychology》2014,9(1):30-41
We propose that seeking mental health care in an environment with heightened stigma may combine elements of both psychological and moral courage. Interviews of 32 active duty US Army personnel about their process of seeking current mental health care were analyzed for themes of voluntary action, personal risk, and noble or worthwhile goals (benefits). Risks and benefits were divided into internal risks and benefits, characteristic of psychological courage; and external risks and benefits, characteristic of moral courage. Concerns about external risks were themes in all narratives, while concerns about internal risks were themes in only about half of narratives. Both internal and external benefits of treatment were themes in approximately three-quarters of the narratives, whereas doubts about internal (but not external) benefits were also expressed at a similar rate. Thus, participants described an act of blended courage, with social risks of moral courage taken for wellness goals of psychological courage. 相似文献