全文获取类型
收费全文 | 1529篇 |
免费 | 89篇 |
专业分类
1618篇 |
出版年
2023年 | 9篇 |
2022年 | 14篇 |
2021年 | 17篇 |
2020年 | 35篇 |
2019年 | 47篇 |
2018年 | 70篇 |
2017年 | 67篇 |
2016年 | 66篇 |
2015年 | 33篇 |
2014年 | 62篇 |
2013年 | 155篇 |
2012年 | 84篇 |
2011年 | 78篇 |
2010年 | 44篇 |
2009年 | 50篇 |
2008年 | 68篇 |
2007年 | 75篇 |
2006年 | 48篇 |
2005年 | 43篇 |
2004年 | 48篇 |
2003年 | 54篇 |
2002年 | 61篇 |
2001年 | 32篇 |
2000年 | 28篇 |
1999年 | 23篇 |
1998年 | 25篇 |
1997年 | 13篇 |
1996年 | 19篇 |
1995年 | 16篇 |
1994年 | 18篇 |
1993年 | 8篇 |
1992年 | 14篇 |
1991年 | 12篇 |
1990年 | 14篇 |
1989年 | 12篇 |
1988年 | 15篇 |
1987年 | 11篇 |
1986年 | 10篇 |
1985年 | 9篇 |
1984年 | 12篇 |
1983年 | 5篇 |
1982年 | 9篇 |
1981年 | 6篇 |
1980年 | 8篇 |
1979年 | 6篇 |
1978年 | 12篇 |
1976年 | 8篇 |
1973年 | 5篇 |
1972年 | 5篇 |
1969年 | 6篇 |
排序方式: 共有1618条查询结果,搜索用时 0 毫秒
81.
When days are numbered: calendar structure and the development of calendar processing in English and Chinese. 总被引:1,自引:0,他引:1
Unlike English, Chinese uses a numerical system for naming months and days. This study explored whether this difference in naming affects the development of simple calendar calculation. Eight- and 10-year-old children as well as undergraduates in China and the United States were asked to name the day or month that comes a specified time before or after a given day or month. In each age group Chinese speakers primarily used calculation based on calendar names to solve these tasks, while English speakers primarily resorted to reciting the names. The magnitude of these differences was substantial; on difficult tasks Chinese fourth graders performed at speeds comparable to those of English-speaking adults. Implications for models of how linguistic structure affects cognition are discussed. 相似文献
82.
Kelly L. Zellars Pamela L. Perrewe Wayne A. Hochwarter 《Journal of applied social psychology》1999,29(11):2250-2271
The purpose of this study was to examine the extent to which factors in the nursing environment have differential effects on burnout levels among nurses high and low in negative affectivity (NA). Specifically, this field study examined the moderating relationships among role ambiguity, role conflict, and collective efficacy on the NA–burnout relationship among nurses in a hospital setting. Findings suggest that perceived role conflict exacerbates while perceptions of collective efficacy reduce specific dimensions of burnout for nurses high in NA. These results offer some evidence regarding which environmental characteristics may mitigate burnout for high-NA nurses. 相似文献
83.
Kevin T. Kelly 《Erkenntnis》1999,50(1):7-53
Belief revision theory concerns methods for reformulating an agent's epistemic state when the agent's beliefs are refuted by new information. The usual guiding principle in the design of such methods is to preserve as much of the agent's epistemic state as possible when the state is revised. Learning theoretic research focuses, instead, on a learning method's reliability or ability to converge to true, informative beliefs over a wide range of possible environments. This paper bridges the two perspectives by assessing the reliability of several proposed belief revision operators. Stringent conceptions of minimal change are shown to occasion a limitation called inductive amnesia: they can predict the future only if they cannot remember the past. Avoidance of inductive amnesia can therefore function as a plausible and hitherto unrecognized constraint on the design of belief revision operators. 相似文献
84.
This study investigated factors associated with social anxiety during early adolescence using multiple informants, including
self and peer perspectives, teacher ratings, and direct observations. Negative social performance expectations, maladaptive
coping strategies, and social skill deficits were examined as correlates of social anxiety and mediators linking social anxiety
with poor peer relations. Participants were 84 middle school students (47 girls, 37 boys) over-sampled for elevated social
anxiety. Analyses revealed correlations linking social anxiety with decreased peer acceptance and increased peer victimization.
Path analysis indicated that negative social performance expectations and social withdrawal-disengagement accounted for the
association between social anxiety and decreased peer acceptance. Social anxiety, self-directed coping strategies, and social
withdrawal-disengagement were each directly linked with increased peer victimization for boys. The results replicate findings
based on clinical samples, extend understanding of cognitive, social, and behavioral factors associated with social anxiety
in middle school, and provide new information regarding gender differences in the correlates of social anxiety. 相似文献
85.
86.
Evidence that women of color are dealt with as anomalies in psychological research is discussed in order to: (a) inform researchers about the omissions, (b) stimulate interest in increased inclusion of women of color among research populations, and (c) demonstrate the need for increased diversity in research paradigms. It is noted that research paradigms directed at the study of the universal woman have in actuality focused on White middle class populations. This article examines the methodological and theoretical transformations that have occurred in the literature, and evaluates the extent to which researchers have successfully incorporated ethnicity into the study of gender issues. This is a call for an examination of women's experiences relative to ethnicity and a paradigmatic shift in the assumptions about what is worthy or appropriate for investigation. 相似文献
87.
88.
89.
Research has shown that emotional avoidance and anxiety sensitivity are associated with more self-reported fear and distress in response to laboratory fear challenge procedures. The present study aimed to expand upon this work and examined how emotional avoidance and anxiety sensitivity are related to emotional and physiological responses to an observational fear challenge procedure. To accomplish this aim, a carefully screened, non-clinical sample (N = 43) was administered the Acceptance and Action Questionnaire (AAQ), a measure of emotional avoidance, and the Anxiety Sensitivity Index (ASI). Participants then engaged in an observational fear challenge paradigm. During the fear challenge, participants watched mock panic attacks while emotional (e.g., fear and panic) and skin conductance levels were assessed. Consistent with expectation, emotional avoidance and anxiety sensitivity were positively associated with more self-reported fear and more severe panic symptoms to the challenge procedure. However, anxiety sensitivity was more highly associated with self-reported fear and panic symptoms in response to the challenge procedure than emotional avoidance. Emotional avoidance and anxiety sensitivity were not associated with levels of physiological arousal to the observational fear challenge procedure. Discussion focuses on the interplay between emotional avoidance, anxiety sensitivity, and the development of vicarious fear responses and how these constructs may contribute to the pathogenesis of anxiety disorders. 相似文献
90.
Salience network response to changes in emotional expressions of others is heightened during early adolescence: relevance for social functioning 下载免费PDF全文
Maya L. Rosen Margaret A. Sheridan Kelly A. Sambrook Meg J. Dennison Jessica L. Jenness Mary K. Askren Andrew N. Meltzoff Katie A. McLaughlin 《Developmental science》2018,21(3)
Adolescence is a unique developmental period when the salience of social and emotional information becomes particularly pronounced. Although this increased sensitivity to social and emotional information has frequently been considered with respect to risk behaviors and psychopathology, evidence suggests that increased adolescent sensitivity to social and emotional cues may confer advantages. For example, greater sensitivity to shifts in the emotions of others is likely to promote flexible and adaptive social behavior. In this study, a sample of 54 children and adolescents (age 8–19 years) performed a delayed match‐to‐sample task for emotional faces while undergoing fMRI scanning. Recruitment of the anterior cingulate and anterior insula when the emotion of the probe face did not match the emotion held in memory followed a quadratic developmental pattern that peaked during early adolescence. These findings indicate meaningful developmental variation in the neural mechanisms underlying sensitivity to changes in the emotional expressions. Across all participants, greater activation of this network for changes in emotional expression was associated with less social anxiety and fewer social problems. These results suggest that the heightened salience of social and emotional information during adolescence may confer important advantages for social behavior, providing sensitivity to others’ emotions that facilitates flexible social responding. 相似文献