全文获取类型
收费全文 | 11522篇 |
免费 | 212篇 |
国内免费 | 190篇 |
出版年
2015年 | 37篇 |
2013年 | 37篇 |
2012年 | 1076篇 |
2011年 | 1230篇 |
2010年 | 273篇 |
2009年 | 147篇 |
2008年 | 958篇 |
2007年 | 903篇 |
2006年 | 840篇 |
2005年 | 718篇 |
2004年 | 642篇 |
2003年 | 554篇 |
2002年 | 535篇 |
2001年 | 330篇 |
2000年 | 383篇 |
1999年 | 167篇 |
1998年 | 61篇 |
1997年 | 31篇 |
1996年 | 55篇 |
1994年 | 78篇 |
1993年 | 91篇 |
1992年 | 96篇 |
1991年 | 110篇 |
1990年 | 101篇 |
1989年 | 100篇 |
1988年 | 117篇 |
1987年 | 127篇 |
1986年 | 97篇 |
1985年 | 121篇 |
1984年 | 109篇 |
1983年 | 135篇 |
1982年 | 90篇 |
1981年 | 90篇 |
1980年 | 79篇 |
1979年 | 84篇 |
1978年 | 74篇 |
1966年 | 48篇 |
1965年 | 132篇 |
1964年 | 104篇 |
1963年 | 126篇 |
1962年 | 55篇 |
1958年 | 111篇 |
1957年 | 96篇 |
1956年 | 86篇 |
1955年 | 49篇 |
1954年 | 38篇 |
1953年 | 33篇 |
1952年 | 29篇 |
1951年 | 35篇 |
1949年 | 33篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
281.
当列宁在《哲学笔记》中尖锐而又十分明确地表达他对唯物辩证法的明快简练的观点时,这些观点决不只是(甚至可以说不是)作为他重新批判性地研究黑格尔著作的结论加以表述的,而是(甚至首先是)他在哲学领域中多年斗争的结果。这种斗争是他为反对马赫主义者、“主观社会学”的拥护者、“合法马克思主义者”以及把马克思主义思想僵化的教条主义等倾向而不得不进行的。这些倾向在第二国际的理论家中间(特别是在普列汉诺夫及其学生那里)表现得十分明显。 相似文献
282.
283.
284.
Poling A Grossett D Fulton B Roy S Beechler S Wittkopp CJ 《The Behavior analyst / MABA》1983,6(2):145-152
The participation of women in behavior analysis as authors of articles published in the Journal of the Experimental Analysis of Behavior (JEAB) and the Journal of Applied Behavior Analysis (JABA), as members of the Association for Behavior Analysis (ABA), and as contributors to the 1982 ABA convention was examined. Since the inception of JEAB and JABA, men have appeared as authors far more frequently than women, although women have published relatively more frequently in the latter journal than in the former. Across years, there has been an upward trend in the proportion of JEAB authors who are female; this is not the case for all JABA authors, although it does hold for senior authors. In 1980-1981 and 1981-1982, females represented approximately half of ABA's student and affiliate members but less than a third of its full members. Approximately a third of the contributors to posters and symposia and a seventh of those delivering invited addresses at the 1982 ABA convention were women. 相似文献
285.
生理学中已经积累了不少事实材料,可以说明人脑活动的年龄发育和退化的特征。但是,对某些时期,例如,对出生到7岁以及50岁之后的时期,进行了系统地研究,而对其它年龄期,只是作了些个别的研究工作。对高级神经活动生理学主要问题的研究也不平衡;对儿童第一信号系统水平上的条件反射活动形成的规律,研究得很充分,在这方面进行研究的有等人;对第二信号系统的发育和机能活动机制的研究却比较少,对确定儿童类型特点以及在理论和实践上都很重要的许多其它问题,研究得也不充分。因此,本文中材料的安排也相应地不平衡。 相似文献
286.
苏联教育科学院普通和教育心理学研究所是我国最早的心理学研究机构之一。1982年是这个研究所成立七十周年。关于它的历史,它在发展俄国和苏联心理科学中的作用,这个所的著名科学家在这门科学中所做的贡献,已有许多著作阐述。本文专门谈这个研究所的科学活动的一般总结和展望(文中所用材料是由这个所的主要研究人员提供的)。 相似文献
287.
288.
289.
Violations of stochastic transitivity on concurrent chains: Implications for theories of choice
下载免费PDF全文
![点击此处可从《Journal of the experimental analysis of behavior》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Houston A 《Journal of the experimental analysis of behavior》1991,55(3):323-335
The concurrent-chains procedure has been used to measure how choice depends on various aspects of reinforcement, such as its delay and its magnitude. Navarick and Fantino (1972, 1974, 1975) have found that choice in this procedure can violate the condition of stochastic transitivity that is required if a unidimensional scale for reinforcements is to be possible. It is shown in this paper that two simple unidimensional models of choice on concurrent chains can produce violations of stochastic transitivity. It is argued that such violations may result from the complex contingencies of the concurrent-chains procedure. 相似文献
290.
In rural Appalachia in Tennessee, data on 13 female adolescents who had experienced a pregnancy (mean age=16 years, 7 months) were compared with those on 38 female adolescents who had not experienced a pregnancy (mean age-16 years, 4 months) to test the hypothesis that teenagers who experience a pregnancy have external attributions of control over their life events. The Nowicki-Strickland Locus of Control Scale for Children was administered to determine their beliefs about causes of events in their lives. All the girls were white and matched for socioeconomic status, housing, and cultural background. The mean attribution of control to external agents score stood at 14.5 for girls who had experienced a pregnancy compared with 12.7 for those who had not experienced a pregnancy, but the difference was not significant (p=.08).54% of the cases exhibited external attributional orientation compared with 16% of the controls (p.02). This finding concurred with that of earlier studies. The fact that not all the girls who had experienced a pregnancy had external attributional orientation suggested that it is not the only factor linked to adolescent pregnancy. Studies have not identified whether external attributional orientation is a causal factor or consequence of adolescent pregnancy. A 1980 study found that women who had shown more external locus of control scores during pregnancy and tended to castigate themselves had a high probability of postpartum depression. Another study indicated that rises in depression among adolescents were linked to prechange orientations toward external attributions of control. Practitioners should selectively pay attention to teenagers who have extreme attributional orientations since many teenagers carry their pregnancies to term and choose to rear their infants. These orientations appear to pose risks for the adolescent mother and her children. 相似文献