全文获取类型
收费全文 | 880篇 |
免费 | 37篇 |
专业分类
917篇 |
出版年
2023年 | 15篇 |
2021年 | 14篇 |
2020年 | 24篇 |
2019年 | 25篇 |
2018年 | 31篇 |
2017年 | 31篇 |
2016年 | 32篇 |
2015年 | 17篇 |
2014年 | 20篇 |
2013年 | 92篇 |
2012年 | 32篇 |
2011年 | 50篇 |
2010年 | 22篇 |
2009年 | 30篇 |
2008年 | 35篇 |
2007年 | 32篇 |
2006年 | 25篇 |
2005年 | 24篇 |
2004年 | 22篇 |
2003年 | 21篇 |
2002年 | 26篇 |
2001年 | 16篇 |
2000年 | 21篇 |
1999年 | 10篇 |
1998年 | 10篇 |
1997年 | 11篇 |
1996年 | 8篇 |
1995年 | 10篇 |
1994年 | 6篇 |
1993年 | 11篇 |
1992年 | 10篇 |
1991年 | 13篇 |
1990年 | 7篇 |
1989年 | 9篇 |
1988年 | 15篇 |
1987年 | 7篇 |
1985年 | 5篇 |
1984年 | 8篇 |
1983年 | 6篇 |
1982年 | 6篇 |
1979年 | 9篇 |
1978年 | 7篇 |
1977年 | 10篇 |
1976年 | 5篇 |
1975年 | 7篇 |
1974年 | 9篇 |
1973年 | 11篇 |
1972年 | 7篇 |
1971年 | 6篇 |
1967年 | 6篇 |
排序方式: 共有917条查询结果,搜索用时 15 毫秒
821.
A Qualitative Exploration of Counselor Educators' Collaborative Authorship Perceptions and Practices
Limited research exists that examines the ethics of counselor educators' collaborative authorship practices. The study purpose was to explore the collaborative authorship decision-making perceptions and practices of counselor educators (N = 11). We identified six themes: (a) human process and communication, (b) context and nature of relationships, (c) learning experiences about authorship, (d) academic and career stage expectations, (e) collaborative authorship practices, and (f) philosophy of authorship. Implications and recommendations for research are discussed. 相似文献
822.
The regression trunk approach (RTA) is an integration of regression trees and multiple linear regression analysis. In this
paper RTA is used to discover treatment covariate interactions, in the regression of one continuous variable on a treatment
variable withmultiple covariates. The performance of RTA is compared to the classical method of forward stepwise regression. The results of two
simulation studies, in which the true interactions are modeled as threshold interactions, show that RTA detects the interactions
in a higher number of cases (82.3% in the first simulation study, and 52.3% in the second) than stepwise regression (56.5%
and 20.5%). In a real data example the final RTA model has a higher cross-validated variance-accounted-for (29.8%) than the
stepwise regression model (12.5%). All of these results indicate that RTA is a promising alternative method for demonstrating
differential effectiveness of treatments.
Supported by The Netherlands Organization for Scientific Research (NWO), grant 030-56403 to Jacqueline Meulman for the Pioneer
project “Subject-Oriented Multivariate Analysis,” and grant 451-02-058 to Elise Dusseldorp for the Veni project “Modeling
interaction effects as small trees in regression and classification.” We thank Bram Bakker for making the data of his doctoral
dissertation available, and David Hand, Jerome Friedman, Bart Jan van Os, Philip Spinhoven, and the anonymous reviewers for
their helpful suggestions. Special thanks are due to Lawrence Hubert. 相似文献
823.
Fletcher GJ Tither JM O'Loughlin C Friesen M Overall N 《Personality & social psychology bulletin》2004,30(6):659-672
Prior research and theory suggest that people use three main sets of criteria in mate selection: warmth/trustworthiness, attractiveness/vitality, and status/resources. In two studies, men and women made mating choices between pairs of hypothetical potential partners and were forced to make trade-offs among these three criteria (e.g., warm and homely vs. cold and attractive). As predicted, women (relative to men) placed greater importance on warmth/trustworthiness and status/resources in a potential mate but less importance on attractiveness/vitality. In addition, as expected (a) ratings of ideal standards partly mediated the link between sex and mate choices, (b) ideal standards declined in importance from long-term to short-term relationships, with the exception of attractiveness/vitality, and unexpectedly, (c) sex differences were higher for long-term (compared to short-term) mate choice. Explanations and implications are discussed. 相似文献
824.
Lim J Macluran M Price M Bennett B Butow P;kConFab Psychosocial Group 《Journal of genetic counseling》2004,13(2):115-133
Forty-seven unaffected women from high-risk breast cancer families who had received results for hereditary breast/ovarian predisposition genes between 1 month and 5 years ago were interviewed regarding their experiences. Women responded to open-ended questions. The initial emotional turmoil reported by most was generally short lived. However, the impact of genetic testing went beyond the individual to the extended family and social context, particularly in the short-term. A common theme was the difficulty associated with divulging a result to family members, who were also adjusting to their own result. The majority of carriers reported advantages that were both physical (options for surveillance programs and prophylactic surgery) and emotional (reduced uncertainty, increased awareness of options and knowledge about risk, preparation time). Most carriers reported no change in lifestyle although some reported discovering their mutation status as a positive life-changing experience. Implications for genetic counseling and further research are discussed. 相似文献
825.
Factors hypothesized to affect beliefs in fantastical beings were examined by introducing children to a novel fantastical entity, the Candy Witch. Results revealed that among older preschoolers, children who were visited by the Candy Witch exhibited stronger beliefs in the Candy Witch than did those who were not. Among children who were visited, older children had stronger beliefs than did younger children. Among children who were not visited, those with a high Fantasy Orientation believed more strongly than did those with a low Fantasy Orientation. Belief remained high one year later. At both time points, the number of other fantastical beings in which a child believed was significantly related to belief in the Candy Witch. 相似文献
826.
In 2 experiments the authors demonstrated that adaptive locomotion can involve means-ends problem solving. Sixteen-month-old toddlers crossed bridges of varying widths in the presence or absence of a handrail. Babies attempted wider bridges more often than narrow ones, and attempts on narrow bridges depended on handrail presence. Toddlers had longer latencies, examined the bridge and handrail more closely, and modified their gait when bridges were narrow and/or the handrail was unavailable.Infants who explored the bridge and handrail before stepping onto the bridge and devised alternative bridge-crossing strategies were more likely to cross successfully. Results challenge traditional conceptualizations of tools: Babies used the handrail as a means for augmenting balance and for carrying out an otherwise impossible goal-directed task. 相似文献
827.
Psychometric properties of the Parent-Child Relationship Inventory (PCRI) were examined using data collected from adolescents and their parents in the Fullerton Longitudinal Study. Results revealed acceptable internal consistency for most scales and moderate to high 1-year stability for all scales. Both parents' PCRI scores correlated with their views of family climate. Cross-informant concordance was pervasive and strong between mothers' PCRI scores and adolescents' perceptions of the parent-child relationship and family climate; however, convergence was not evident between fathers' and adolescents' reports. Additionally, poor performance was observed for the Autonomy scale. In conjunction with other research on parent-adolescent relationships, concerns are raised regarding the utility of scales to contrast mother-adolescent with father-adolescent relationships. 相似文献
828.
829.
830.
The authors investigated age-related changes in postural control in 33 healthy young adults (18-31 years), 29 seniors (62-75 years), and 22 elderly people (75-96 years). A force platform recorded the results. The horizontal motions of the center of gravity (CGh) and their difference in the plane of support CP - CGv were deduced from the complex center of pressure (CP) trajectories. With fractional Brownian modeling, one can establish that the aging process seems to induce a transition phase in which seniors take more time to initiate the corrective process in the mediolateral (ML) axis than do younger people. The elderly develop a new strategy characterized by the mobilization of higher neuromuscular energy to maintain equilibrium. In the ML axis, the larger displacements could be caused mainly by a hip strategy that could facilitate step initiation. In the anteroposterior (AP) axis, seniors and elderly individuals maintain a relative ability to stabilize their CG into the base of support compared with younger people. 相似文献