全文获取类型
收费全文 | 480篇 |
免费 | 65篇 |
专业分类
545篇 |
出版年
2023年 | 12篇 |
2021年 | 3篇 |
2020年 | 34篇 |
2019年 | 4篇 |
2018年 | 2篇 |
2017年 | 21篇 |
2016年 | 31篇 |
2015年 | 18篇 |
2014年 | 32篇 |
2013年 | 74篇 |
2012年 | 19篇 |
2011年 | 8篇 |
2010年 | 25篇 |
2009年 | 32篇 |
2008年 | 22篇 |
2007年 | 9篇 |
2006年 | 18篇 |
2005年 | 8篇 |
2004年 | 9篇 |
2003年 | 4篇 |
2002年 | 5篇 |
2001年 | 3篇 |
2000年 | 12篇 |
1999年 | 6篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 11篇 |
1995年 | 7篇 |
1994年 | 6篇 |
1993年 | 5篇 |
1992年 | 6篇 |
1991年 | 11篇 |
1990年 | 8篇 |
1989年 | 7篇 |
1988年 | 9篇 |
1987年 | 7篇 |
1986年 | 10篇 |
1985年 | 1篇 |
1984年 | 6篇 |
1982年 | 2篇 |
1981年 | 1篇 |
1979年 | 5篇 |
1978年 | 5篇 |
1977年 | 11篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1972年 | 1篇 |
1971年 | 2篇 |
1960年 | 1篇 |
1946年 | 1篇 |
排序方式: 共有545条查询结果,搜索用时 0 毫秒
91.
Rhee SH Willcutt EG Hartman CA Pennington BF DeFries JC 《Journal of abnormal child psychology》2008,36(1):29-40
There is significant comorbidity between attention-deficit/hyperactivity disorder (ADHD) and conduct disorder (CD). The conclusions
of studies that examined the causes of comorbidity between ADHD and CD conflict, with some researchers finding support for
the three independent disorders model and others finding support for the correlated risk factors model. We tested these models
and eleven alternative hypotheses using the same analytical approach. The participants were 110 monozygotic twin pairs and
181 dizygotic twin pairs recruited from the Colorado Learning Disabilities Research Center Twin Study. The three independent
disorders model did not fit the data, whereas the correlated risk factors model fit the data well. Several other comorbidity
models fit the data as well as or better than the correlated risk factors model. The results suggest that correlated risk
factors are a better explanation for the comorbidity between ADHD and CD than a third, independent ADHD+CD subtype. 相似文献
92.
Risk management of nanotechnology is challenged by the enormous uncertainties about the risks, benefits, properties, and future
direction of nanotechnology applications. Because of these uncertainties, traditional risk management principles such as acceptable
risk, cost–benefit analysis, and feasibility are unworkable, as is the newest risk management principle, the precautionary
principle. Yet, simply waiting for these uncertainties to be resolved before undertaking risk management efforts would not
be prudent, in part because of the growing public concerns about nanotechnology driven by risk perception heuristics such
as affect and availability. A more reflexive, incremental, and cooperative risk management approach is required, which not
only will help manage emerging risks from nanotechnology applications, but will also create a new risk management model for
managing future emerging technologies. 相似文献
93.
The present work investigated the effect of modelling on children's pretend play behaviour. Thirty‐seven children aged between 27 and 41 months were given 4 min of free play with a dollhouse and associated toy props (pre‐modelling phase). Using dolls, an experimenter then acted out a series of vignettes involving object substitutions, imaginary play and attribution of properties. Children were subsequently provided with an additional 4 min free play (post‐modelling phase). Consistent with past research, more pretence was exhibited after modelling than before. Furthermore, in the post‐modelling phase, children were as likely to generate their own novel pretence as they were to copy the actions demonstrated by the experimenter. They also increased the number of novel symbolic acts involving imaginary play from the pre‐ to the post‐modelling phase. This study highlights how young children will not only imitate a model's demonstration of pretend acts but also use this demonstration to catalyze the creation of their own pretence. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
94.
Assoc. Prof. Imre Szecsödy MD PhD 《Forum der Psychoanalyse》2007,23(4):393-401
The manifold functions of a supervisor in following the course of complex processes together with the trainee, are: ? to keep the goals of the supervision in view, ? to establish a teaching alliance and to support the wish and ambitions of the candidate to learn, ? to build a platform for the complex interactions with the trainee with regard to the dynamics of the training situation and keeping in mind the institutional influences, ? to lay down the setting for the work, ? to explore and to reflect how transference and counter-transference influence the interaction between patient and analyst as well as between trainee and supervisor, ? to examine these interactions together focussing continuously on the interaction between candidate and patient, and to encourage the candidate to do the same on his own, ? to continuously formulate hypotheses about the core conflict, the transference phenomena and resistance of the patient, ? to explore and reflect on the cooperative work. 相似文献
95.
It has recently been stated that exogenous attention impairs temporal-resolution tasks (Hein, Rolke, & Ulrich, 2006; Rolke, Dinkelbach, Hein, & Ulrich, 2008; Yeshurun, 2004; Yeshurun & Levy, 2003). In comparisons of performance on spatially cued trials versus neutral cued trials, the results have suggested that spatial attention decreases temporal resolution. However, when performance on cued and uncued trials has been compared in order to equate for cue salience, typically speed—accuracy trade-offs (SATs) have been observed, making the interpretation of the results difficult. In the present experiments, we aimed at studying the effect of spatial attention in temporal resolution while using a procedure to control for SATs. We controlled reaction times (RTs) by constraining the time to respond, so that response decisions would be made within comparable time windows. The results revealed that when RT was controlled, performance was impaired for cued trials as compared with neutral trials, replicating previous findings. However, when cued and uncued trials were compared, performance was actually improved for cued trials as compared with uncued trials. These results suggest that SAT effects may have played an important role in the previous studies, because when they were controlled and measured, the results reversed, revealing that exogenous attention does improve performance on temporal-resolution tasks. 相似文献
96.
This study tests whether the face-processing system of humans and a nonhuman primate species share characteristics that would allow for early and quick processing of socially salient stimuli: a sensitivity toward conspecific faces, a sensitivity toward highly practiced face stimuli, and an ability to generalize changes in the face that do not suggest a new identity, such as a face differently oriented. The look rates by adult tamarins and humans toward conspecific and other primate faces were examined to determine if these characteristics are shared. A visual paired comparison (VPC) task presented subjects with either a human face, chimpanzee face, tamarin face, or an object as a sample, and then a pair containing the previous stimulus and a novel stimulus was presented. The stimuli were either presented all in an upright orientation, or all in an inverted orientation. The novel stimulus in the pair was either an orientation change of the same face/object or a new example of the same type of face/object, and the stimuli were shown either in an upright orientation or in an inverted orientation. Preference to novelty scores revealed that humans attended most to novel individual human faces, and this effect decreased significantly if the stimuli were inverted. Tamarins showed preferential looking toward novel orientations of previously seen tamarin faces in the upright orientation, but not in an inverted orientation. Similarly, their preference to look longer at novel tamarin and human faces within the pair was reduced significantly with inverted stimuli. The results confirmed prior findings in humans that novel human faces generate more attention in the upright than in the inverted orientation. The monkeys also attended more to faces of conspecifics, but showed an inversion effect to orientation change in tamarin faces and to identity changes in tamarin and human faces. The results indicate configural processing restricted to particular kinds of primate faces by a New World monkey species, with configural processing influenced by life experience (human faces and tamarin faces) and specialized to process orientation changes specific to conspecific faces. 相似文献
97.
Fréaadéric Slama MD Bénédicte Dehurtevent MD Jean‐Daniel Even MD Aimé Charles‐Nicolas MD Nicolas Ballon MD PhD Rémy Slama MD 《Suicide & life-threatening behavior》2008,38(6):720-727
Research on vulnerability factors among ethnic groups, independent of primary psychiatric diagnosis, may help to identify groups at risk of suicidal behavior. French African Caribbean general psychiatric patients (N = 362) were recruited consecutively and independently of the primary psychiatric diagnosis. Demographic and clinical characteristics and lifetime history of suicide attempts were recorded. Sixty‐five patients (18%) had a history of at least one suicide attempt. Presence of professional qualifications, children, poor social contacts, treatment with benzodiazepine at inclusion, and poor treatment compliance were all associated with a lifetime history of suicide attempts. 相似文献
98.
Cynthia A. Claassen PhD Thomas Carmody PhD Robert Bossarte PhD Madhukar H. Trivedi MD Stephen Elliott MD Glenn W. Currier MD MPH 《Suicide & life-threatening behavior》2008,38(6):637-649
Fatal and nonfatal intentional self‐harm events in eight U.S. states were compared using emergency department, hospital, and vital statistics data. Nonfatal event rates increased by an estimated 24.20% over 6 years. Case fatality ratios varied widely, but two northeastern states' total event rates (fatal plus nonfatal) were very high (New Hampshire 206.5/100,000 person years; Massachusetts 166.7/100,000). Geographic context did not uniformly impact the likelihood of self‐harm across event types. The state‐level public health burden posed by such acts cannot, therefore, be accurately estimated from either mortality or morbidity data alone. 相似文献
99.
Martin Voracek DSc DMSc PhD Lisa Mariella Loibl BSc Viren Swami PhD Mona Vintilǎ PhD Kairi Kõtlves PhD Dhachayani Sinniah MD Subash Kumar Pillai MD Subramaniam Ponnusamy MD Gernot Sonneck MD Adrian Furnham DLitt DSc PhD David Lester PhD 《Suicide & life-threatening behavior》2008,38(6):688-698
The genetics of suicide is increasingly recognized and relevant for mental health literacy, but actual beliefs may lag behind current knowledge. We examined such beliefs in student samples (total N = 686) from Estonia, Malaysia, Romania, the United Kingdom, and the United States with the Beliefs in the Inheritance of Risk Factors for Suicide Scale. Cultural effects were small, those of key demographics nil. Several facets of construct validity were demonstrated. Marked differences in perceived plausibility of evidence about the genetics of suicide according to research design, observed in all samples, may be of general interest for investigating lay theories of abnormal behavior and communicating behavioral and psychiatric genetic research findings. 相似文献
100.