全文获取类型
收费全文 | 1478篇 |
免费 | 82篇 |
国内免费 | 1篇 |
专业分类
1561篇 |
出版年
2023年 | 14篇 |
2021年 | 19篇 |
2020年 | 25篇 |
2019年 | 37篇 |
2018年 | 43篇 |
2017年 | 38篇 |
2016年 | 55篇 |
2015年 | 20篇 |
2014年 | 27篇 |
2013年 | 141篇 |
2012年 | 56篇 |
2011年 | 52篇 |
2010年 | 30篇 |
2009年 | 34篇 |
2008年 | 66篇 |
2007年 | 54篇 |
2006年 | 41篇 |
2005年 | 46篇 |
2004年 | 50篇 |
2003年 | 33篇 |
2002年 | 29篇 |
2001年 | 38篇 |
2000年 | 24篇 |
1999年 | 25篇 |
1998年 | 16篇 |
1997年 | 28篇 |
1996年 | 15篇 |
1995年 | 16篇 |
1994年 | 17篇 |
1992年 | 22篇 |
1991年 | 16篇 |
1990年 | 14篇 |
1989年 | 16篇 |
1988年 | 13篇 |
1987年 | 22篇 |
1986年 | 13篇 |
1985年 | 16篇 |
1984年 | 19篇 |
1983年 | 16篇 |
1982年 | 17篇 |
1981年 | 18篇 |
1979年 | 15篇 |
1978年 | 17篇 |
1976年 | 16篇 |
1975年 | 18篇 |
1974年 | 16篇 |
1973年 | 20篇 |
1972年 | 18篇 |
1971年 | 22篇 |
1968年 | 13篇 |
排序方式: 共有1561条查询结果,搜索用时 6 毫秒
181.
182.
H. Russell Searight A. Lesley McLaren 《Journal of clinical psychology in medical settings》1998,5(4):467-495
During the past decade, there has been an increase in the diagnosis and treatment of Attention-Deficit Hyperactivity Disorder (ADHD). This syndrome, typically diagnosed in childhood, is characterized by inattention, hyperactive motor behavior, and distractibility. Current prevalence rates obtained in various countries generally exceed the 3–5% reported by DSM-IV. Reasons for increased ADHD prevalence include changes in diagnostic standards, overlap between ADHD and other externalizing disorders, nonspecific behavioral criteria, and the rapid effects of stimulant medication on cognitive functioning. However, social, cultural, and economic factors may also contribute to increased diagnosis. ADHD has become a common topic in the lay media. Popular discussions of ADHD may serve as a metaphoric expression of social anxieties, particularly with respect to children. At the same time, ADHD has rapidly become incorporated into a medical model, with emphasis on pharmacological treatment. Reductions in mental health and educational services, as well as economic pressures of managed care, may also contribute to medicalization of behavioral problems. Collaboration between psychologists and primary care physicians can lead to more accurate diagnosis and appropriate treatment of ADHD and related disorders. 相似文献
183.
Robert A. Davis Leila Dudley Edwards 《International Journal of Children's Spirituality》1998,3(1):9-20
This paper examines some of the contemporary cultural practices associated with the traditional festival of Halloween as it is celebrated by children in Britain and the United States. Using ethnographic evidence from a variety of sources, the authors seek to explore the range of activities which constitute the modern Halloween, particularly as it is mediated to children through the forms of consumer culture. The paper analyses the changing social, historical and religious patterns which have displaced the celebration of Halloween onto children, and offers an account of them which points to the persistence of a coherent spirituality—what the authors term a ‘spirituality of boundaries‘—to be found in the symbolism of the festival and its interaction with the lives and representation of children. 相似文献
184.
The Journal of Value Inquiry - 相似文献
185.
J D Davis B J Collins M W Levine 《Journal of comparative psychology (Washington, D.C. : 1983)》1975,89(9):985-1002
The studies described here investigated the hypothesis that the osmotic postingestional satiety signal proposed by McCleary operates through a mechanism related to gut filling rather than by osmotically induced shifts of fluid from osmoreceptors in the brain. A control theory model is presented, which was designed to make quantitatively explicit the hypothesis under question. The results showed that when mannitol, which is not absorbed from the intestine, is added to a highly palatable saccharin-glucose mixture, the amount of fluid consumed decreased in inverse proportion to the mannitol concentration. Mannitol was also shown to block fluid absorption from the intestine at a low concentration (approximately .070 M) and at higher concentrations to lead to a net flux of fluid into the intestinal lumen. It was also shown that mannitol in concentrations that reduced the intake of the palatable solution did not induce thirst when the animals were in water balance. It did induce thirst, however, when the animals were tested in a state of negative water balance. The results of these studies, considered as a whole, support the view that McCleary's osmotic postingestional satiety signal acts as an intestinal distention signal rather than by inducing thirst. The model is found to be reasonably accurate as a first approximation, and suggestions are made for improvements. 相似文献
186.
Christopher M. Davis 《Attention, perception & psychophysics》1973,13(2):238-240
When a hand-held object is lifted by wrist flexion, the lifting system composed of muscles, bones, and the object lifted constitutes a third-class lever. Therefore, objects require greater lifting force as they are supported further distally The small can of the DeMoors size-weight illusion cans is usually supported further distally than the large one, possibly influencing their relative perceived weight When Ss are required to lift the small can through a shorter lever than the large one, there is a significant shift of judgments toward a reversal of the SWI in a paired-comparison situation. It is concluded that mechanical advantage does influence weight judgments and that biomechanical factors should be considered whenever weight judgments are made. 相似文献
187.
188.
189.
A rapid automatic technique for generating operant key-press behavior in rats 总被引:1,自引:1,他引:0 下载免费PDF全文
Experimentally naive rats were trained to key press on a fixed-ratio 10 schedule of food reinforcement by a completely automatic procedure within a single, 1-hr session. Control procedures demonstrated that the resulting behavior was an operant, under control of the schedule of reinforcement and the specified reinforcing stimulus (food). A simple, combination food-tray operandum, also described, was used as the basis for the training technique. 相似文献
190.
Stephen P. Davis 《Journal of Employment Counseling》1971,8(2):50-58
This study was done to find out if there are certain types of bias in the Interest Check List (ICL) used by employment counselors. If one analyzes the ICL in terms of modal Worker Trait Group (WTG) areas, the concern about the frequency of certain WTG areas takes on added importance. The issue is one of validity. Is it valid to say that if one responds positively to a WTG area that has only N=1 as compared to three positive responses for a WTG area that has N=12, the former is not a modal WTG? The exclusion of certain WTG areas from the ICL is discussed. A final issue is the orientation toward data-type jobs rather than people or thing jobs in the ICL. 相似文献