首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   16351篇
  免费   539篇
  国内免费   4篇
  2020年   174篇
  2019年   211篇
  2018年   246篇
  2017年   272篇
  2016年   322篇
  2015年   240篇
  2014年   311篇
  2013年   1710篇
  2012年   497篇
  2011年   581篇
  2010年   391篇
  2009年   409篇
  2008年   515篇
  2007年   585篇
  2006年   539篇
  2005年   498篇
  2004年   473篇
  2003年   496篇
  2002年   511篇
  2001年   232篇
  2000年   243篇
  1999年   227篇
  1998年   270篇
  1997年   263篇
  1996年   241篇
  1995年   236篇
  1994年   234篇
  1993年   227篇
  1992年   232篇
  1991年   202篇
  1990年   182篇
  1989年   188篇
  1988年   180篇
  1987年   203篇
  1986年   187篇
  1985年   199篇
  1984年   221篇
  1983年   233篇
  1982年   263篇
  1981年   239篇
  1980年   238篇
  1979年   197篇
  1978年   259篇
  1977年   246篇
  1976年   224篇
  1975年   240篇
  1974年   223篇
  1973年   190篇
  1972年   156篇
  1971年   127篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
951.
This brief account of the author's interactions with Florian Znaniecki centers on the scholarly impact of Thomas and Znaniecki's five-volume Polish Peasant in Europe and America and on Znaniecki's early contributions to the sociology of science.  相似文献   
952.
This paper describes the development of the volunteer component of the Perinatal Positive Parenting program—a program for parents of firstborns who deliver at the William Beaumont Hospital in Royal Oak, Michigan. Effective parenting volunteer service requires energy, interest, and an extraordinary commitment to healthy family relationships. Principles which assure a high level of commitment to the Perinatal Positive Parenting Program are discussed. Recruitment, training, supervision, and evaluation dimensions which specifically support this commitment are also examined.  相似文献   
953.
Studies examining the effects of day care are reviewed. Little evidence was found indicating a negative impact on child development. A number of weaknesses in the day care literature were pointed out, including problems of ecological validity and failure to examine for differential effects. Suggestions for future research are made, among them a “natural history” of day care and studies of children who have experienced trauma.  相似文献   
954.
Rape has been posited to be an outgrowth of male reproductive strategies. Forced copulations may have evolved as a consequence of the low parental investment made by males in producing and raising offspring. We designed a laboratory experiment which paired rhesus macaque males with females in order to assess the influence of intersexual aggression on male sexual activity. Younger and older adult males had comparable levels of sexual behavior, but younger males were more aggressive towards females than were older males. In addition, females threatened younger males more than older males. Male attacks on females did not result in sexual intercourse. On the contrary, a negative correlation existed between male aggression towards females and male success at achieving intromissions. Female aggression towards males appeared to be an effective tactic which reduced the chances of sexual intercourse. We conclude that intersexual aggression acts either as a mechanism of dominance assertion or as a means to increase spatial distance between individuals. These data do not support the idea that rape in humans has an evolutionary foundation derived from male reproductive strategies.  相似文献   
955.
956.
957.

In the present study, we investigated whether parents’ beliefs about their high school aged adolescents’ spatial abilities (i.e., spatial visualization, mental manipulation, and navigation abilities) differed based on their child’s gender. We also examined whether these beliefs related to parents’ encouragement of their child to pursue a Science, Technology, Engineering, or Mathematics (STEM) career as well as students’ actual STEM major and career intentions. Data were collected from 117 pairs of U.S. high school students and one of their parents. We found that parents of young men thought their child had higher mental manipulation and navigation abilities than did parents of young women, even after statistically controlling for adolescents’ actual spatial abilities. Parents who perceived that their child had higher mental manipulation ability were more likely to encourage their child to pursue a STEM career, and those students were more likely to report that they intended to pursue a STEM career. These findings suggest that parents’ beliefs about how good their child is at spatial tasks may be based more strongly on gender stereotypes than on their child’s actual spatial abilities. Helping to make parents aware of these beliefs could be a potential lever of intervention to increase women’s participation in STEM careers.

  相似文献   
958.
Motivation and Emotion - Three studies explored the role of attachment styles as determinants of romantic passion and investigated how the interplay between these variables contributes to conflict...  相似文献   
959.
Bowker  Julie C.  Ooi  Laura L.  Coplan  Robert J.  Etkin  Rebecca G. 《Sex roles》2020,82(7-8):482-492
Sex Roles - Informed by prior work on social withdrawal and gender role norms, the present study utilizes data from a large sample of U.S. (n?=?656) and Canadian (n?=?560)...  相似文献   
960.
Lesbian, gay, and bisexual (LGB) individuals often experience internalized and/or externalized religious rejection due to their sexual orientation. Initial steps in the coming-out process can be especially difficult and can result in existential crises, including questioning one's place within the religious/spiritual realm. The authors propose a developmental framework for conceptualizing the role of religion and spirituality in the coming-out process. Cass's (1979, 1984) stage model of coming out and Genia's (1995) model of religious development, along with additional literature addressing LGB spirituality, serve as foundations for this framework. Counseling and research implications of the framework are also discussed.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号