全文获取类型
收费全文 | 16890篇 |
免费 | 803篇 |
国内免费 | 15篇 |
专业分类
17708篇 |
出版年
2021年 | 132篇 |
2020年 | 225篇 |
2019年 | 241篇 |
2018年 | 356篇 |
2017年 | 359篇 |
2016年 | 366篇 |
2015年 | 281篇 |
2014年 | 308篇 |
2013年 | 1318篇 |
2012年 | 569篇 |
2011年 | 645篇 |
2010年 | 372篇 |
2009年 | 349篇 |
2008年 | 472篇 |
2007年 | 452篇 |
2006年 | 393篇 |
2005年 | 334篇 |
2004年 | 338篇 |
2003年 | 318篇 |
2002年 | 323篇 |
2001年 | 700篇 |
2000年 | 699篇 |
1999年 | 461篇 |
1998年 | 180篇 |
1997年 | 173篇 |
1996年 | 138篇 |
1995年 | 135篇 |
1993年 | 139篇 |
1992年 | 361篇 |
1991年 | 322篇 |
1990年 | 347篇 |
1989年 | 334篇 |
1988年 | 317篇 |
1987年 | 288篇 |
1986年 | 310篇 |
1985年 | 298篇 |
1984年 | 235篇 |
1983年 | 200篇 |
1979年 | 190篇 |
1978年 | 161篇 |
1975年 | 187篇 |
1974年 | 241篇 |
1973年 | 197篇 |
1972年 | 203篇 |
1971年 | 167篇 |
1970年 | 151篇 |
1969年 | 199篇 |
1968年 | 204篇 |
1967年 | 161篇 |
1966年 | 182篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
861.
Assertive behaviours like showing-off have an important role for a child in getting attention from other children in a class without being aggressive. This study presented the showing-off behaviour in an English nursery school, and later it was discussed in comparison with that in the German kindergartens reported by Hold-Cavell. As a result, the English children performed showing-off behaviours at only one-half the frequency of German children. No sex difference was seen in either showing-off or physical aggression in the nursery class. The frequency of showing-off did not correlate with that of physical aggression; this result is discussed in terms of Hinde's motivational postulate. Showing-off behaviour is deserving of the further studies cross-culturally and onto-genetically. 相似文献
862.
863.
D. Caroline Blanchard Nina K. Popova Irina Z. Plyusnina Irina L. Velichko Desiree Campbell Robert J. Blanchard Julia Nikulina Ella M. Nikulina 《Aggressive behavior》1994,20(5):387-397
Selective breeding of wild rats over many generations on the basis of low or high defensive threat and attack to human approach and contact has produced highly polarized “domesticated” and “wild-type” animals. Because the selection procedure selectively involves these two defense patterns, and these clearly differ in the two groups, it is of interest to determine if other, nonselected, defensive behaviors to threat stimuli also change. “Domesticated” and “wild-type” rats of the thirty-fifth generation were run in a fear defense test battery (F/DTB) to systematically evaluate defensive behaviors to a variety of present threat stimuli. “Domesticated” rats showed reduced avoidance and slower flight speed to an approaching experimenter, reduced jump/startle response to handelap and dorsal contact, less vocalization and boxing to vibrissae stimulation or to an anesthetized conspecific, and reduced defensiveness to an attempted pickup by the experimenter. These results indicate that selective bi-directional breeding for defensive threat and attack to human approach and contact produces group differences in a variety of defensive behaviors, and in defensiveness to stimuli other than those on which the selection was based. © 1994 Wiley-Liss, Inc. 相似文献
864.
Interpersonal deception theory (IDT) frames deception as a communication activity and examines deception within interactive contexts. One key element of the theory is the role of suspicion in prompting behavior changes. An experiment testing several suspicion-related hypotheses paired participants (half friends, half strangers) for interviews during which interviewees (EEs) lied or told the truth and interviewers (ERs) were induced to be (moderately or highly) suspicious (or not). Results confirmed that suspicion and deceit were perceived when present, suspicion was manifested through nonverbal behaviors but with different behavioral patterns for moderately versus highly suspicious ERs, and suspicion affected sender behavior. Relational familiarity moderated some behaviors. Results are discussed in terms of mutual influence processes and the dynamic nature of communication in interpersonal deception. 相似文献
865.
866.
Tamsin K. Saxton Kristofor McCarty Jasmine Caizley Dane McCarrick Thomas V. Pollet 《British journal of psychology (London, England : 1953)》2020,111(3):492-507
Several lab-based studies have indicated that when people are hungry, they judge larger women's bodies as more attractive, compared to when they are satiated. These satiety-dependent judgements are assumed to provide explanatory power when it comes to the noted cross-cultural differences in attitudes towards women's adiposity, whereby people who live in regions that are under greater nutritional stress tend to have more favourable attitudes towards bigger bodies. However, it is premature to assume that women's bodies are the proper or actual domain of the satiety-dependent judgement shifts found within research study testing contexts until stimuli other than female bodies have also been tested: The research programme falls into the trap of confirmation bias unless we also seek out disconfirmatory evidence and test the boundaries of the effects of hunger. Accordingly, we collected attractiveness judgements of female and male bodies manipulated to vary in size by varying level of adiposity, and objects manipulated to vary in size, from 186 participants who also reported their current hunger level. We found that larger sizes of stimuli in general, and women's bodies in particular, especially when judged by women, were judged as more attractive by the hungrier participants. We discuss these patterns in the context of the Insurance Hypothesis, the Environmental Security Hypothesis, and the impact of hunger on acquisition. 相似文献
867.
868.
869.
Lauren K. Schnell Jason C. Vladescu April N. Kisamore Ruth M. DeBar SungWoo Kahng Kathleen Marano 《Journal of applied behavior analysis》2020,53(2):1111-1129
Few studies have evaluated the use of assessment to identify the most efficient instructional practices for individuals with autism spectrum disorder. This is problematic as these individuals often have difficulty acquiring skills, and the procedures that may be efficient with one individual may not be for others. The experimenters conducted instructional assessments to identify the most efficient prompt type (model, partial physical, full physical) and prompt-fading procedure (progressive delay, most-to-least, least-to-most) for teaching auditory–visual conditional discriminations for individuals with autism spectrum disorder. Each assessment was conducted at least twice, and a final generality test combined the most and the least efficient prompt type and prompt-fading procedure for teaching novel auditory–visual conditional discriminations. The results demonstrated learner-specific outcomes for the prompt type assessment, whereas the least-to-most prompt fading procedure was most efficient for all participants. 相似文献
870.
Jennifer N. Fritz Christopher T. Roath Patricia T. Shoemaker A. Blair Edwards Louisa A. Hussein Natalie K. Villante Channing A. Langlinais Lisa A. Rettig 《Journal of applied behavior analysis》2020,53(3):1688-1701
Studies have shown that the multiple-stimulus without replacement (MSWO) preference assessment is an effective assessment format for identifying preferred items. However, it is possible that factors other than reinforcer quality might influence selections by some individuals when the MSWO array consists of edible items. The validity of the MSWO results was evaluated by comparing items identified as most and least preferred by the MSWO assessment in a concurrent-schedule (CS) format. Varying edible items were used in each study. The MSWO format accurately identified the higher quality edible item for most participants across studies (76%); however, the MSWO format did not predict the highest quality edible item in the CS assessment for 20% to 30% of participants in each study. 相似文献