全文获取类型
收费全文 | 530篇 |
免费 | 25篇 |
专业分类
555篇 |
出版年
2023年 | 6篇 |
2022年 | 4篇 |
2021年 | 6篇 |
2020年 | 11篇 |
2019年 | 17篇 |
2018年 | 16篇 |
2017年 | 17篇 |
2016年 | 20篇 |
2015年 | 11篇 |
2014年 | 19篇 |
2013年 | 51篇 |
2012年 | 29篇 |
2011年 | 30篇 |
2010年 | 10篇 |
2009年 | 9篇 |
2008年 | 17篇 |
2007年 | 16篇 |
2006年 | 21篇 |
2005年 | 16篇 |
2004年 | 18篇 |
2003年 | 9篇 |
2002年 | 25篇 |
2001年 | 13篇 |
2000年 | 12篇 |
1999年 | 8篇 |
1998年 | 6篇 |
1996年 | 4篇 |
1995年 | 7篇 |
1993年 | 4篇 |
1991年 | 4篇 |
1990年 | 7篇 |
1988年 | 7篇 |
1987年 | 5篇 |
1985年 | 3篇 |
1983年 | 8篇 |
1982年 | 4篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 5篇 |
1976年 | 4篇 |
1975年 | 4篇 |
1973年 | 5篇 |
1972年 | 6篇 |
1971年 | 3篇 |
1970年 | 5篇 |
1969年 | 3篇 |
1968年 | 6篇 |
1967年 | 4篇 |
1966年 | 4篇 |
1965年 | 3篇 |
排序方式: 共有555条查询结果,搜索用时 15 毫秒
201.
202.
The federal regulations of human research were written to permit the use of discretion so that research can fit the circumstances under which it is conducted. For example, the researcher and institutional review board (IRB) could waive or alter some informed consent elements if they deem this the morally and scientifically best way to conduct the research. To do so, however, researchers and IRBs would first have to use mature moral and scientific judgment. They might also have to rely on empirical research to discover the most effective way to act on their moral sense (e.g., to discover how best to approach potential research participants and explain the nature and purpose of the research participation for which they are being recruited, to ensure comprehension and competent decision making). On discovering the most ethical way to proceed, they would then need to look to the federal regulations of human research to discover how to document their decision and justify it within that somewhat flexible regulatory structure. Unfortunately, many IRBs and researchers fail to take these sensible steps to solve ethical problems and proceed immediately to a default requirement of the regulations that places science at odds with the regulations and, ostensibly, with ethics. The following articles in this special issue are about the process of learning to engage in ethical problem solving and using the flexibility permitted by the federal regulations. These articles extricate researchers from the mindset that has gotten them into trouble, and, ideally, provoke them to use mature common sense and moral judgment. 相似文献
203.
204.
Lila Asfour Shi Huang Manuel A. Ocasio Tatiana Perrino Seth J. Schwartz Daniel J. Feaster Mildred Maldonado-Molina Hilda Pantin Guillermo Prado 《Journal of child and family studies》2017,26(5):1266-1273
Compared to non-Hispanic whites, Hispanic adolescents in the U.S. report higher rates of several mental, emotional, and behavioral problems such as substance use, sexual risk behaviors, and internalizing and externalizing problems. There is evidence of common pathways in the development of mental, emotional, and behavioral problems with certain subgroups of Hispanic adolescents being at greater risk. In the present article, we report analysis of baseline data for 959 Hispanic adolescents who participated in one of two randomized controlled trials evaluating a family-based preventive intervention. Utilizing latent class analysis, we identified subgroups of Hispanic adolescents based on socio-ecological risk and protective factors (e.g., parent–adolescent communication, parental involvement in school). Three distinct socio-ecological risk subgroups (high, medium, and low risk) were identified and exhibited significant differences from each other across a majority of socio-ecological risk and protective factors. Adolescents in higher socio-ecological risk subgroups reported greater mental, emotional, and behavioral problems across all outcomes. Individual comparisons revealed significant differences between the low socio-ecological risk group and both the medium and high socio-ecological risk group in lifetime alcohol use, smoking, and sex, as well as internalizing and externalizing problems. Implications for intervention include focusing on specific risk subgroups and targeting shared risk and protective factors rather than specific mental, emotional, and behavioral outcomes. 相似文献
205.
Kyle Esteves Sarah A. O. Gray Katherine P. Theall Stacy S. Drury 《Journal of child and family studies》2017,26(10):2753-2761
This study investigated the multigenerational impact of mothers’ own exposure to physical maltreatment on internalizing symptoms in her child after accounting for her parenting practices, depression, and the child’s own exposure to stressful life events. Children (n?=?101, ages 5–16), predominantly African American, were recruited into this cross sectional study using ethnographic mapping and targeted sampling for high-risk neighborhoods. Mothers reported retrospectively on their own exposure to physical maltreatment in childhood, their parenting practices, as well as current depressive symptoms. Maternal report of her child’s exposure to stressful life events and child behavior was also collected. Maternal childhood exposure to physical maltreatment was significantly associated with her child’s internalizing symptoms (p?=?.004); this effect remained after accounting for child sex, maternal depressive symptoms, harsh parenting practices, and the child’s own exposure to stressful life events. Formal tests of mediation through these pathways were non-significant. Findings suggest mothers’ experience of childhood maltreatment contributes uniquely to children’s internalizing symptoms, potentially through previously uncharacterized pathways. Examination of additional behavioral, psychosocial and biological pathways may help better describe the multi-generational effects of child maltreatment. 相似文献
206.
207.
Moscovitch DA Gavric DL Merrifield C Bielak T Moscovitch M 《Behaviour research and therapy》2011,(8):505-517
High (n = 41) and low (n = 39) socially anxious (SA) participants completed the Waterloo Images and Memories Interview (WIMI), a new assessment tool that measures the accessibility and properties of mental images and associated autobiographical memories that individuals may experience across both anxiety-provoking (negative) and non-anxiety-provoking (positive) social situations. Results indicated that both high and low SA individuals experience negative images and associated autobiographical memories in anxiety-provoking social situations, but the rates of endorsement of such images and memories among high SA participants were substantially lower than those reported in recent studies. Moreover, whereas low SA individuals were capable of accessing a relatively balanced array of both negative and positive self-representations that were rich in episodic detail, high SA individuals retrieved a higher, more unbalanced ratio of negative-to-positive images and memories, as well as impoverished positive images that were significantly degraded in episodic detail. Finally, negative images influenced the two groups differently, with high SA individuals experiencing more negative emotional and cognitive consequences associated with bringing such images to mind. These results are discussed in relation to theoretical models of learning and memory within the context of contemporary cognitive behavioral models of social anxiety. 相似文献
208.
209.
Plateaus,Dips, and Leaps: Where to Look for Inventions and Discoveries During Skilled Performance 下载免费PDF全文
The framework of plateaus, dips, and leaps shines light on periods when individuals may be inventing new methods of skilled performance. We begin with a review of the role performance plateaus have played in (a) experimental psychology, (b) human–computer interaction, and (c) cognitive science. We then reanalyze two classic studies of individual performance to show plateaus and dips which resulted in performance leaps. For a third study, we show how the statistical methods of Changepoint Analysis plus a few simple heuristics may direct our focus to periods of performance change for individuals. For the researcher, dips become the marker of exploration where performance suffers as new methods are invented and tested. Leaps mark the implementation of a successful new method and an incremental jump above the path plotted by smooth and steady log–log performance increments. The methods developed during these dips and leaps are the key to surpassing one's teachers and acquiring extreme expertise. 相似文献
210.
Eric T. Steiner Kimberly A. Barchard Marta Meana Freidun Hadi Peter B. Gray 《Current psychology (New Brunswick, N.J.)》2010,29(1):45-51
The following study investigated the effect of poker competition on testosterone (T) responses. Thirty-two participants played
one-on-one poker in a lab on campus. Saliva samples were obtained before and after the poker games. On average, participants
produced a significant increase in T during the competition, with no difference between winners and losers. This study is
the first of its kind to examine T responses in a gambling competition. Possible implications for destructive gambling behaviors
are discussed. 相似文献