全文获取类型
收费全文 | 11281篇 |
免费 | 1746篇 |
国内免费 | 468篇 |
专业分类
13495篇 |
出版年
2022年 | 89篇 |
2021年 | 172篇 |
2020年 | 212篇 |
2019年 | 501篇 |
2018年 | 473篇 |
2017年 | 553篇 |
2016年 | 543篇 |
2015年 | 472篇 |
2014年 | 444篇 |
2013年 | 1131篇 |
2012年 | 590篇 |
2011年 | 529篇 |
2010年 | 448篇 |
2009年 | 456篇 |
2008年 | 478篇 |
2007年 | 448篇 |
2006年 | 423篇 |
2005年 | 372篇 |
2004年 | 312篇 |
2003年 | 268篇 |
2002年 | 276篇 |
2001年 | 324篇 |
2000年 | 305篇 |
1999年 | 210篇 |
1998年 | 94篇 |
1997年 | 88篇 |
1996年 | 85篇 |
1993年 | 69篇 |
1992年 | 131篇 |
1991年 | 136篇 |
1990年 | 128篇 |
1989年 | 108篇 |
1988年 | 99篇 |
1987年 | 107篇 |
1986年 | 118篇 |
1985年 | 115篇 |
1984年 | 107篇 |
1983年 | 89篇 |
1979年 | 102篇 |
1978年 | 70篇 |
1975年 | 68篇 |
1974年 | 93篇 |
1973年 | 102篇 |
1972年 | 73篇 |
1971年 | 69篇 |
1970年 | 81篇 |
1969年 | 75篇 |
1968年 | 106篇 |
1967年 | 83篇 |
1966年 | 93篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
161.
The relationship between sex role flexibility and prosocial behavior among preschool children was investigated. Subjects included 16 boys and 18 girls, ranging in age from 36 to 60 months, from intact families of the upper middle class. A nonhierarchical multiple regression analysis was undertaken to determine the contributions of the predictor variables of sex, age, IQ, and sex role flexibility, as well as their interactions with prosocial behavior (criterion variable). Results indicated that while the overall regression model was not significant, the variable of Sex × Sex Role Flexibility did contribute significantly to the model. Inspection of the correlation coefficients associated with this variable revealed that while sex role flexibility and prosocial behavior among boys were significantly and positively related, among girls no significant relationship was found. 相似文献
162.
It was hypothesized that older widows (N=309) who had been care givers to their husbands would have undertaken a greater number of household responsibilities than had women who had not been care givers. Findings indicated that, prior to the husband's death, more traditionally male and more traditionally female tasks were performed by the care-giving wives (n=158). This was particularly true in the case of Alzheimer's care givers (n=21). More importantly, widows' present feelings of competence were related to undertaking household responsibilities, with those who had been care givers expressing significantly higher levels of competence. 相似文献
163.
164.
特殊青少年感觉寻求特质的研究 总被引:8,自引:1,他引:7
本文对优秀少年、少年犯和普通少年进行了感觉寻求特质、认知复杂性、棒框测验和心率的研究。旨在检验和证实F.Farley的有关理论:高感觉寻求者由于寻求刺激方式的不同而具有两种不同的行为倾向;并深入探讨不同少年的认知和生理特点。实验结果表明,少年犯和优秀少年比普通少年具有更高的感觉寻求倾向。优秀少年和少年犯寻求刺激的方面是不同的。优秀少年的认知复杂性分数较高,并倾向于场独立性特征,对新异刺激倾向于朝向反射特点;少年犯则具有较低的认知复杂性和场依存性特征。 相似文献
165.
Yaacov Y. I. Vertzberger 《Political psychology》1997,18(4):863-876
Prime Minister Yitzhak Rabin's assassination has less of a lasting impact on the Israeli public's political values, beliefs and attitudes than might have been anticipated from the magnitude of the event and intensity of the immediate responses. Why did the assassination have such a short-lived effect? This article considers the puzzle as a specific case of the broader phenomenon of collective political trauma and its consequences for values, beliefs and attitudes held by the mass public toward issues that it associates with the traumatic event. The article offers six deductively inferred hypotheses that describe, explain and link affective, cognitive and behavioral aspects of collectively experienced trauma. These hypotheses form a pre-theory explaining the perseverence of core political cognitions, even in the face of a considerable challenge to their validity and relevance. 相似文献
166.
David C. Geary Carmen O. Hamson Guo-peng Chen Fan Liu Mary K. Hoard Timothy A. Salthouse 《Psychonomic bulletin & review》1997,4(3):425-430
A Chinese advantage over Americans was found for economically relevant computational and reasoning abilities in arithmetic for groups of 6th- and 12th-grade students matched or equated on general intelligence. No cross-national difference for computational or reasoning abilities was found for samples of older (60- to 80-year-old) Chinese and American adults equated on general intelligence. The pattern of change in arithmetical competencies across cohorts suggests that the Chinese advantage in 6th and 12th grade is due to a cross-generational decline in competencies in the United States and a cross-generational improvement in China. 相似文献
167.
168.
Relation algebras from cylindric and polyadic algebras 总被引:1,自引:0,他引:1
169.
170.