全文获取类型
收费全文 | 6664篇 |
免费 | 143篇 |
国内免费 | 60篇 |
专业分类
6867篇 |
出版年
2023年 | 33篇 |
2022年 | 27篇 |
2021年 | 53篇 |
2020年 | 76篇 |
2019年 | 77篇 |
2018年 | 204篇 |
2017年 | 185篇 |
2016年 | 282篇 |
2015年 | 166篇 |
2014年 | 123篇 |
2013年 | 285篇 |
2012年 | 392篇 |
2011年 | 385篇 |
2010年 | 113篇 |
2009年 | 105篇 |
2008年 | 137篇 |
2007年 | 139篇 |
2006年 | 138篇 |
2005年 | 1401篇 |
2004年 | 729篇 |
2003年 | 522篇 |
2002年 | 198篇 |
2001年 | 75篇 |
2000年 | 49篇 |
1999年 | 65篇 |
1998年 | 30篇 |
1997年 | 27篇 |
1996年 | 16篇 |
1994年 | 27篇 |
1992年 | 43篇 |
1991年 | 47篇 |
1990年 | 66篇 |
1989年 | 51篇 |
1988年 | 30篇 |
1987年 | 48篇 |
1986年 | 49篇 |
1985年 | 31篇 |
1984年 | 32篇 |
1983年 | 27篇 |
1979年 | 36篇 |
1975年 | 31篇 |
1974年 | 34篇 |
1973年 | 31篇 |
1972年 | 26篇 |
1971年 | 26篇 |
1970年 | 19篇 |
1969年 | 21篇 |
1968年 | 16篇 |
1967年 | 20篇 |
1966年 | 16篇 |
排序方式: 共有6867条查询结果,搜索用时 0 毫秒
71.
Male and female subjects provided ratings of personal traits, femininity and masculinity, and total caloric consumption for a female or a male target based on the type of diet she or he had allegedly consumed. The gender associated with the foods presented for each dietary profile was manipulated. Results showed that Target Gender and Dietary Profile significantly affected impression ratings and calorie estimates. Both male and female subjects perceived male eaters and those who ate a feminine diet more favorably. Results are discussed in terms of the different underlying expectations held for males and females when food consumption is involved during the impression formation process. 相似文献
72.
73.
74.
Kim Killu 《Behavioral Interventions》1994,9(3):169-176
This article examines the current role of direct-care staff, and their significance to individuals with disabilities living in the community. The role of staff will be redefined with respect to client normalization within the community. Finally, a framework for training staff is provided. 相似文献
75.
This paper addresses a problem in reporting scientific research. The problem is how to distinguish between justifiable and unjustifiable data selection. Robert Millikan is notorious for an infamous remark that he used all his data when in fact he had used a selection. On this basis he has been accused of fraud. There is a tension here — historians and his defenders see his selection as understandable and legitimate, while current statements about the Responsible Conduct of Research imply his selection was illegitimate. This paper discusses two main issues that arise in assessing his conduct, whether he was intentionally misleading and whether he actually did mislead the scientific community about some facts of nature. It is argued that he was not intentionally misleading, and that it is unlikely that he misled the scientific community. 相似文献
76.
Albert S. Bregman Pierre Ahad Jean Kim Leanne Melnerich 《Attention, perception & psychophysics》1994,56(2):155-162
The question of whether sudden increases in the amplitude of pure-tone components would perceptually isolate them from a more complex spectrum was investigated in two experiments. In Experiment 1, a 3.5-sec noise was played as a masker. During the noise, two pure-tone components of different frequencies appeared in succession. Subjects were asked to judge whether the pitch sequence went up or down. The rise time of these components had only a small and inconsistent effect on discrimination. In Experiment 2, the 3.5-sec background signal was a complex tone. The amplitudes of two of its components were incremented in succession. Again, subjects judged whether the pitch pattern went up or down. This time there was a sizable, monotonic effect of the rise time of the increments, with more rapid increments leading to better discrimination. The difference between the two results is interpreted in terms of the auditory system’s response to changing and unchanging signals and the role of its “sudden-change” responses in attracting perceptual processing to certain spectral regions. 相似文献
77.
T Werka J Sk?r H Ursin 《Journal of comparative psychology (Washington, D.C. : 1983)》1978,92(4):672-681
Lesions localized to specific areas of the amygdala and overlying cortex in rats produced differential effects in several behavioral tasks. Three different types of lesions were tested: central, basolateral, and cortex lateral to the amygdala. Lesions restricted to the central nucleus produced increased activity on all parameters studied in an open-field test, but the other two groups were not changed. In one-way active avoidance all three groups with lesions showed deficits. The most pronounced change was observed in the central group. All groups showed the same degree of retention loss, but in forced extinction of one-way active avoidance after retraining, the cortical and basolateral groups were most defective. A fear-reduction hypothesis is proposed for the central lesion. The basolateral and cortical areas may be more specifically involved in passive avoidance behavior. 相似文献
78.
G E Kühne J U Grünes W Knorr L Perina H Richter U Rommel R Sorger H St?ck N Waldow 《Psychiatrie, Neurologie, und medizinische Psychologie》1978,30(2):104-115
The antidepressants desipramine and imipramine were compared within the framework of a multiclinical study performed under the conditions of a controlled clinical experiment. There has been found a time-different remission of affective symptoms, which was not detectable for the inhibition of drive. The tachythymoleptic action of desipramine is discussed with reference to these results. Evaluation of the possibility of controlling affects shows different ranges of activity of desipramine and imipramine, with desipramine influencing especially negative psychoenergetic symptoms in the area of drives and emotions and imipramine, restrictive symptoms in addition to differential phenomena of the psychomotor expression. 相似文献
79.
G G?llnitz 《Psychiatrie, Neurologie, und medizinische Psychologie》1978,30(5):270-276
The author gives a brief survey of the development of Child-Neuropsychiatry in the G.D.R. and subsequently gives reasons for the decision in favor of the unity of neurology and psychiatry as applied to children and juveniles, which is in contrast to developments in other countries. In addition to hygienic, economic, organizational, and medical considerations, this decision was also determined by the fact that a Child-Neuropsychiatrist must, in his practical work as a subspecialist, be able to head a multiprofessional team and, thus, help assure optimum development of a child's personality. 相似文献
80.