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   45698篇
  免费   1604篇
  国内免费   13篇
  47315篇
  2018年   677篇
  2017年   652篇
  2016年   776篇
  2015年   558篇
  2014年   673篇
  2013年   4393篇
  2012年   1175篇
  2011年   1234篇
  2010年   812篇
  2009年   790篇
  2008年   1187篇
  2007年   1119篇
  2006年   1064篇
  2005年   924篇
  2004年   874篇
  2003年   930篇
  2002年   875篇
  2001年   1307篇
  2000年   1287篇
  1999年   989篇
  1998年   530篇
  1996年   624篇
  1995年   595篇
  1994年   584篇
  1993年   535篇
  1992年   1013篇
  1991年   917篇
  1990年   897篇
  1989年   810篇
  1988年   812篇
  1987年   792篇
  1986年   806篇
  1985年   795篇
  1984年   728篇
  1983年   636篇
  1982年   541篇
  1981年   548篇
  1980年   505篇
  1979年   678篇
  1978年   573篇
  1976年   510篇
  1975年   651篇
  1974年   650篇
  1973年   704篇
  1972年   648篇
  1971年   562篇
  1970年   501篇
  1968年   599篇
  1967年   495篇
  1966年   490篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
141.
Empirical studies in the psychology of gambling have revealed at least two well supported findings: (1) irrational cognitions outnumber rational cognitions during gambling (Gaboury and Ladouceur, 1987; Ladouceur, Gaboury, Dumont and Rochette 1988); (2) risk-taking behavior increases as a function to exposure to gambling activities (Ladouceur, Mayrand and Tourigny 1987; Ladouceur, Tourigny and Mayrand 1986). The present study compared regular and occasional gamblers on cognitive and behavioral measures during a blackjack session using the thinking aloud method. The results confirmed that regular players emitted more irrational thoughts than occasional gamblers. The theoretical and practical implications of those results are discussed within the general context of the psychology of gambling.  相似文献   
142.
The child-rearing beliefs of 32 mothers and 36 day-care providers in Mexico were compared. Day-care providers expected children to master developmental skills at an earlier age than did mothers. Day-care providers more strongly valued the development of independent and cooperative behavior, and placed less importance on obedience. They also reported employing more flexible and nonauthoritarian discipline strategies than did mothers. Mothers and caregivers did not differ in the extent to which they attributed the success of their discipline strategies to their own actions rather than to external factors. Also examined was how mothers' beliefs differed in families characterized by interdependent versus individualistic social structures. In interdependent families, mothers were more likely to believe in later mastery of developmental skills and to make external attributions. These findings suggest that Mexican children experience incongruous social norms as they move between home and day care settings, and that these norms, at least within the home, are associated with the social structural features of the setting.  相似文献   
143.
144.
Depressed affect and time perception   总被引:1,自引:0,他引:1  
  相似文献   
145.
146.
147.
148.
149.
Research in both laboratory and field settings has suggested a link between thermal stress and violent behavior, and both linear and curvilinear models have been investigated. A dearth of field studies prompted the analysis reported here, which is based on data for some 10,000 aggravated assaults occurring the City of Dallas in 1980 (a summer of severe heat stress) and 1981. This analysis replicates and extends certain aspects of recent work by Anderson and Anderson (1984) relating to the so-called linear and curvilinear hypotheses. Thermal stress is measured in two ways: a Discomfort Index (DI), which takes into account the influence of humidity acting in concert with temperature, and ambient temperature. Regression analyses were performed in two stages. In the first, data for all neighborhoods and all days of the study period were combined into ambient temperature and DI models. At the second stage, models differentiated between the three levels of neighborhood socioeconomic status. With weekend controlled, DI and ambient temperature were significant independent variables in the ‘overall’ model and in medium and low status neighborhoods. However, when linear effects were controlled, the curvilinear measures were never significant. The analysis generally tended to confirm Anderson and Anderson's suggestion that a reduction of aggression with increasing temperature does not appear to occur within the normal range of temperatures. This analysis further suggested that the hypothesized curvilinear effect is weak, if not entirely absent, even during conditions of extreme heat.  相似文献   
150.
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