全文获取类型
收费全文 | 1887篇 |
免费 | 40篇 |
出版年
2021年 | 19篇 |
2020年 | 23篇 |
2019年 | 14篇 |
2018年 | 33篇 |
2017年 | 27篇 |
2016年 | 37篇 |
2015年 | 22篇 |
2014年 | 29篇 |
2013年 | 210篇 |
2012年 | 32篇 |
2011年 | 49篇 |
2010年 | 43篇 |
2009年 | 38篇 |
2008年 | 70篇 |
2007年 | 73篇 |
2006年 | 65篇 |
2005年 | 56篇 |
2004年 | 61篇 |
2003年 | 77篇 |
2002年 | 56篇 |
2001年 | 20篇 |
2000年 | 26篇 |
1999年 | 32篇 |
1998年 | 29篇 |
1997年 | 26篇 |
1996年 | 32篇 |
1995年 | 27篇 |
1994年 | 25篇 |
1993年 | 30篇 |
1992年 | 27篇 |
1991年 | 28篇 |
1990年 | 26篇 |
1989年 | 18篇 |
1988年 | 19篇 |
1987年 | 17篇 |
1986年 | 20篇 |
1985年 | 23篇 |
1984年 | 30篇 |
1983年 | 26篇 |
1982年 | 38篇 |
1981年 | 26篇 |
1980年 | 23篇 |
1979年 | 33篇 |
1978年 | 34篇 |
1977年 | 30篇 |
1976年 | 27篇 |
1975年 | 23篇 |
1974年 | 22篇 |
1973年 | 23篇 |
1967年 | 15篇 |
排序方式: 共有1927条查询结果,搜索用时 296 毫秒
121.
Brown LJ 《The Psychoanalytic quarterly》2002,71(2):273-300
The Oedipus complex is typically thought to begin in the phallic phase, when the child's relationship to the parents as a couple achieves central prominence. In contrast, the author views the appearance of oedipal conflicts in the phallic phase as the end point of a line of development of triangular relatedness that began in infancy. An aspect of the Kleinian view of the oedipal situation--that awareness of the parents as a couple begins in the preoedipal period--deserves serious consideration. A patient is presented for whom the working through of early oedipal issues in the transference-counter-transference permitted recovery from withdrawal into a fantasy world. 相似文献
122.
In comparison to younger adults, older adults demonstrate deficiencies in cognitive and linguistic abilities. Such cognitive factors that decline with age include working memory capacity and inhibitory abilities. The purpose of the present investigation was to measure differences in time course processing of inference revision abilities, as well as working memory, as they exist relative to adult age differences. Fifteen neurologically intact older adults and 15 younger adults participated in this study. A cross-modal lexical priming paradigm was chosen as the measure of the inference revision task; the listening span task of Tompkins, Bloise, Timko, and Baumgaertner (1994) was selected as the measure of working memory. Both groups demonstrated normal priming effects. No age-related differences were found on the working memory measure. Age-related differences did emerge on inferencing abilities. A significant correlation emerged between the older group's performance on comprehending inference revisions and their working memory capacity. Generally, inhibitory abilities and working memory capacity appeared to adversely affect older participant's performance. 相似文献
123.
Animal communication systems have become closely tuned to local habitat conditions as populations have adjusted to different long-term environmental pressures. However, many habitats are now rapidly changing because of anthropogenic modification. Maintenance of effective communication systems in greatly altered environments will depend on communicative responses on both evolutionary and ontogenetic time scales. Consideration of potential acoustic challenges caused by human-generated habitat modification has important implications for basic research and conservation biology. First, the observed signal structure of individuals in altered environments may not match the normally hypothesized call structure. Second, species that either possess little ability to adapt quickly on an evolutionary time scale or have little plasticity in their communicative systems may be unable to respond to large anthropogenic alterations in their acoustic environment. 相似文献
124.
Rhoades LJ 《Science and engineering ethics》2002,8(3):459-468
This paper reports data and scholarly opinion that support the perception of systemic flaws in the management of scientific
professions and the research enterprise; explores the responsibility that professional status places on the scientific professions,
and elaborates the concept of the responsible conduct of research (RCR). Data are presented on research misconduct, availability
of research guidelines, and perceived research quality.
An earlier version of this paper was presented at an International Conference on “Conflict of Interest and its Significance
in Science and Medicine” held in Warsaw, Poland, 5–6 April, 2002.
The opinions expressed herein are those of the author and do not necessarily represent the views of the Office of Research
Integrity, the U.S. Department of Health and Human Services, or any other federal agency. 相似文献
125.
Rhoades LJ 《Science and engineering ethics》2000,6(1):95-107
This paper discusses ten lessons learned since 1989 about handling allegations of scientific misconduct involving biomedical
and behavioral research supported by the U. S. Public Health Service.
An earlier version of this paper was presented at a symposium, Scientific Misconduct: An International Perspective, organised by The Medical University of Warsaw, 16 November, 1998.
The opinions expressed herein are those of the author and do not necessarily represent the views of the Office of Research
Integrity, the U.S. Department of Health and Human Services, or any other federal agency. 相似文献
126.
127.
This paper reviews the international scientific evidence on the effectiveness of secondary prevention interventions for young drug users. The review provides insight into the effectiveness of interventions that have been evaluated using moderately strong research designs. Most of the studies included are from the United States of America. Some interventions are effective in reducing drug use and associated problems while others have no or mixed effect. Those successful in reducing drug use include behavior therapy, Minnesota 12-step programs, residential care, and general drug treatment. Those with either no effect or mixed effect include schools interventions. Involving parents and other agencies may enhance an intervention's effect. There is a lack of good quality studies outside the USA. Future interventions should focus on either low- or high-risk groups of young drug users. Future research should be conducted on a wider range of services for young people and include non-medical outcomes such as communication skills, schooling, employment, family relations, and economic costs. 相似文献
128.
Drebing CE Van Ormer EA Krebs C Rosenheck R Rounsaville B Herz L Penk W 《Journal of applied behavior analysis》2005,38(3):359-372
This study evaluated the efficacy of adding contingency management techniques to vocational rehabilitation (VR) to improve treatment outcome as measured by entry into competitive employment. Nineteen dually diagnosed veterans who entered VR in the Veterans' Administration's compensated work therapy (CWT) program were randomly assigned to CWT (n = 8) or to CWT with enhanced incentives (n = 11). Over the first 16 weeks of rehabilitation, those in the incentives condition could earn up to dollar 1,006 in cash for meeting two sets of clinical goals: (a) remaining abstinent from drugs and alcohol and (b) taking steps to obtain and maintain a competitive job. Results indicate that relative to participants in the CWT-only group, those in the incentives condition engaged in more job-search activities, were more likely to remain abstinent from drugs and alcohol, were more likely to obtain competitive employment, and earned an average of 68% more in wages. These results suggest that rehabilitation outcomes may be enhanced by restructuring traditional work-for-pay contingencies to include direct financial rewards for meeting clinical goals. 相似文献
129.
Mathew M 《The Journal of analytical psychology》2005,50(3):383-393
Abstract: Taking inspiration from a quotation by Lao Tzu, this paper considers 'reverie' as a dynamic process of containment as well as a state of mind. Reverie as a quality of thought akin to prayer is explored in the relationship between self and other. In infant observation, the paper contemplates the development of a baby's capacity to reach beyond the personal world to an archetypal experience of being held, where the creation of an internal space in mind could indicate the beginnings of spiritual awareness. 'Maternal/analytic reverie' views the passage of unconscious communication between patient and analyst as the result of a 'window' opening in the meniscus of the analyst's self. 'Paternal/supervisory reverie' reflects on the impact on a patient of an extra containing mind of a supervisor. 'Archetypal reverie' considers the transforming impact of numinous dreams on the psyche, and reflects on the power of prayer. Drawing on clinical examples from these four areas, the aim is to demonstrate the usefulness of the 'void within' and the perceptive function of emptiness in the 'doors and windows' of our mind. 相似文献
130.
DeCarlo LT 《Perception & psychophysics》2005,67(5):886-896
Bias in magnitude scaling can be viewed as involving deviations of judgments from proportionality. A model of bias is shown to provide a theoretical basis for Stevens's conjecture about geometrically averaging magnitude estimation and magnitude production exponents in order to obtain an estimate of the psychophysical exponent. An overlooked result is that one can also obtain an estimate of the magnitude of the bias. Examples from several well-known studies are presented. The bias is also shown to vary in response to experimental manipulation of the stimulus range. Aspects of predicting exponents across experiments are clarified, and a new prediction is examined. The model of bias fills some theoretical gaps in magnitude scaling and clarifies underlying assumptions and predictions. 相似文献