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   120842篇
  免费   2157篇
  国内免费   7篇
  123006篇
  2020年   1498篇
  2019年   1811篇
  2018年   2217篇
  2017年   2300篇
  2016年   2597篇
  2015年   1927篇
  2014年   2073篇
  2013年   9883篇
  2012年   3723篇
  2011年   3860篇
  2010年   2371篇
  2009年   2405篇
  2008年   3467篇
  2007年   3373篇
  2006年   2983篇
  2005年   2672篇
  2004年   2673篇
  2003年   2520篇
  2002年   2491篇
  2001年   3520篇
  2000年   3375篇
  1999年   2584篇
  1998年   1376篇
  1997年   1191篇
  1996年   1175篇
  1995年   1128篇
  1994年   1094篇
  1993年   1106篇
  1992年   2145篇
  1991年   2030篇
  1990年   2017篇
  1989年   1886篇
  1988年   1809篇
  1987年   1737篇
  1986年   1778篇
  1985年   1910篇
  1984年   1579篇
  1983年   1405篇
  1979年   1632篇
  1978年   1224篇
  1975年   1409篇
  1974年   1572篇
  1973年   1575篇
  1972年   1377篇
  1971年   1257篇
  1970年   1139篇
  1969年   1141篇
  1968年   1455篇
  1967年   1344篇
  1966年   1239篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
Computerized career information and guidance systems, although now commonplace, have received little psychometric scrutiny. The authors argue for examining these systems in the same way in which paper and pencil instruments are assessed. Consideration is also given to issues related to programming, technical-service problems, and staffing.  相似文献   
102.
103.
104.
105.
106.
107.
108.
Cognitive monitoring and strategy choice in younger and older adults   总被引:1,自引:0,他引:1  
Younger (24- to 39-year-old) and older (60- to 88-year-old) adults learned a list of vocabulary words; one half of the words were studied using a generally more powerful strategy (mnemonic keyword method), and one half mediated with a less powerful approach (generating semantic contexts). Before using these strategies as part of the experiment, neither younger nor older adults judged that the keyword method was more effective and neither group preferred one strategy over the other. After using the strategies and taking a test of strategically studied unfamiliar vocabulary words, the younger subjects reported accurately the relative effectiveness of the two strategies and selected the one that had worked better for them to apply to a subsequent list of vocabulary items. The older participants were not as aware of the differential potency of the strategies and did not rely as much as did the younger subjects on knowledge of strategy utility in making strategy choices. In short, metacognitive awareness of strategy effects produced by monitoring and use of metacognitive awareness in regulating strategy choice were more pronounced in the younger compared with the older sample in this study.  相似文献   
109.
Consideration and use of remarriage as a response to cope with the death of a husband was examined in 39 women who had been widowed and had subsequently remarried, 192 widows who had considered remarriage but had not yet remarried, and 420 widows who had not considered remarriage. Controlling for age, we found that women who had remarried reported fewer current concerns than did the other two groups. Furthermore, we found that women who retrospectively recalled the most concerns immediately after the death of the spouse were the ones who eventually remarried. The remarried group believed that they were experiencing significantly fewer concerns now than they had after the spouse's death; the women who had not considered remarriage believed that they were experiencing the same number of concerns now as before; and those women who had considered remarriage believed that they were experiencing significantly more concerns. Implications for remarriage as a coping mechanism for widowhood and the relation of age to remarriage decisions are discussed.  相似文献   
110.
The development of a phenotype is due to an interaction of the genotype with the environment. Two terms have been used to describe the outcome of this interaction, the norm-of-reaction and the reaction range. The first represents the theoretically limitless distribution of the phenotypes that may be expressed by a given genotype. The reaction range implies an upper and lower limit for phenotype expression possible from a given genotype. A critical distinction between the reaction range and the norm-of-reaction is that the norm-of-reaction is a statement of the conceivable interactions found but does not imply any predictability other than that within the conditions previously tested experimentally, that is, the tails of a normal distribution are infinitely variable, whereas the concept of reaction range implies a limitation inherent in the genotype, that is, a finite range. Empirical support for the reaction-range concept is questionable. Animal studies cited in support of the reaction range have been inappropriately and incorrectly interpreted.  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