全文获取类型
收费全文 | 3220篇 |
免费 | 389篇 |
国内免费 | 750篇 |
出版年
2024年 | 13篇 |
2023年 | 49篇 |
2022年 | 99篇 |
2021年 | 109篇 |
2020年 | 134篇 |
2019年 | 108篇 |
2018年 | 153篇 |
2017年 | 151篇 |
2016年 | 144篇 |
2015年 | 119篇 |
2014年 | 122篇 |
2013年 | 272篇 |
2012年 | 210篇 |
2011年 | 279篇 |
2010年 | 235篇 |
2009年 | 221篇 |
2008年 | 259篇 |
2007年 | 339篇 |
2006年 | 335篇 |
2005年 | 251篇 |
2004年 | 162篇 |
2003年 | 100篇 |
2002年 | 87篇 |
2001年 | 44篇 |
2000年 | 57篇 |
1999年 | 42篇 |
1998年 | 29篇 |
1997年 | 26篇 |
1996年 | 18篇 |
1995年 | 22篇 |
1994年 | 18篇 |
1993年 | 15篇 |
1992年 | 15篇 |
1991年 | 3篇 |
1990年 | 22篇 |
1989年 | 12篇 |
1988年 | 9篇 |
1987年 | 10篇 |
1985年 | 11篇 |
1984年 | 3篇 |
1983年 | 3篇 |
1982年 | 9篇 |
1981年 | 4篇 |
1980年 | 6篇 |
1979年 | 9篇 |
1978年 | 4篇 |
1975年 | 5篇 |
1974年 | 4篇 |
1967年 | 2篇 |
1963年 | 2篇 |
排序方式: 共有4359条查询结果,搜索用时 0 毫秒
961.
胎教音乐对胎儿影响的实验研究 总被引:8,自引:0,他引:8
该项研究从三个方面探讨了胎教音乐对胎儿的作用。结果发现:胎教音乐可以使胎动时间延长,并证明在胎儿后期即存在条件反射;胎儿出生后能够再认胎教音乐,说明在胎儿后期已经存在听觉记忆;胎儿的性别及神经活动类型是影响其对音乐反应的重要因素。该研究的意义在于:证明了胎儿期心理现象的存在。把对“胎儿期有无心理现象”的历史争论引入了心理学的实验过程。 相似文献
962.
963.
964.
Studied the socio-political attitudes and political party preferences of 532 Swedish high school students as a function of seven background variables: (I) the mother's political party preference, (2) the father's political party preference, (3) the mother's education, (4) the father's education, (5) the mother's income, (6) the father's income and (7) social class identification. Multiple classification analysis and multivariate nominal analysis were used to uncover the most important possible determinants of political socialization of the youth in both bivariate and multivariate aspects. The results showed that, of the seven predictor or background variables studied, only three had any substantial relationship with socio-political attitudes and political party preferences of the youth: (a) the mother's political party preference, (b) class identification and (c) the father's political party preference in that general order of importance. Furthermore, the superiority of the mother's political party preference over the father's political party preference was especially marked for girls. Among other things, the results also disclosed that ‘left-wing’ youth tended to be more loyal to parental political beliefs than ‘moderate’ and ‘right-wing’ youth. Several alternative explanations were proposed for these findings. 相似文献
965.
966.
967.
儿童自我意识发展机制初探 总被引:7,自引:3,他引:4
本文在对以往有关研究分析的基础上指出,自尊需要早在自我意识成熟之前就已存在,并且是儿童自我意识发展的内在动力,当儿童逐渐在多方面认识事件的自我意义,从而更为主动、合理地满足自尊需要时,自我意识便得以发展.儿童的自尊需要和自我认识水平相互作用,不仅形成了自我意识的纵向发展差异,而且形成了横向个体差异。 相似文献
968.
儿童理解程度副词的特征 总被引:1,自引:1,他引:0
本实验用模糊数学方法研究4—9岁儿童对程度副词的理解特征。结果说明9岁儿童的理解达到了成熟水平;幼儿偏向于夸大理解程度副词的词义;7、8岁是发展的转折期。 相似文献
969.
Marriage is embedded in the web of spouses' broader social ties, and relationship quality with parents and parents-in-law is associated with marital quality. Guided by Family Systems theory and using three waves of dyadic data from 268 Chinese different-sex couples across the first several years of marriage, we first conducted a Random-Intercept Actor-Partner Interdependence Cross-lagged Panel Model (RI-APIM-CLPM) to examine the within-family longitudinal associations among husbands' and wives' relationship quality with parents, parents-in-law, and spouse. Then, husbands' and wives' filial obligations were added as predictors of between-family differences in their own and their partner's relationship quality in the three social ties. Among husbands, increased relationship quality in one social tie (e.g., with parents) predicted reductions in relationship quality in the other social ties (e.g., relationships with parents-in-law and marital quality). Our examination of between-family differences demonstrated that high levels of filial obligations predicted higher intergenerational relationship quality and marital quality. By simultaneously considering the within-family associations of multiple social ties and how filial obligations account for between-family differences in relationship quality, we contribute to a nuanced understanding of how Chinese couples' romantic partnerships are embedded in their broader family system. 相似文献
970.
During childhood, the ability to limit problem behaviors (i.e., externalizing) and the capacity for cognitive regulation (i.e., executive function) are often understood to develop in tandem, and together constitute two major components of self-regulation research. The current study examines bi-directional relations between behavioral problems and executive function over the course of childhood and adolescence. Relying on a diverse sample of children growing up in low-income neighborhoods, we applied a random intercept cross-lagged panel model to longitudinally test associations between behavioral problems and executive function from age 4 through age 16. With this approach, which disaggregated between- and within-child variation, we did not observe significant cross-lagged paths, suggesting that within-child development in one domain did not strongly relate to development in the other. We also observed a moderate correlation between the stable between-child components of behavioral problems and executive function over time in our preferred model, suggesting that these two domains may be relatively distinct when modeled from early childhood through adolescence. 相似文献