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   1534篇
  免费   35篇
  1569篇
  2021年   12篇
  2020年   19篇
  2019年   24篇
  2018年   32篇
  2017年   37篇
  2016年   42篇
  2015年   41篇
  2014年   31篇
  2013年   158篇
  2012年   62篇
  2011年   53篇
  2010年   39篇
  2009年   41篇
  2008年   58篇
  2007年   54篇
  2006年   58篇
  2005年   44篇
  2004年   49篇
  2003年   57篇
  2002年   54篇
  2001年   27篇
  2000年   34篇
  1999年   20篇
  1998年   35篇
  1997年   20篇
  1996年   18篇
  1995年   23篇
  1994年   19篇
  1993年   25篇
  1992年   14篇
  1991年   21篇
  1990年   17篇
  1989年   17篇
  1988年   16篇
  1987年   20篇
  1986年   15篇
  1985年   15篇
  1984年   21篇
  1983年   26篇
  1982年   19篇
  1981年   12篇
  1980年   13篇
  1979年   19篇
  1978年   11篇
  1977年   18篇
  1976年   11篇
  1975年   12篇
  1974年   11篇
  1969年   13篇
  1968年   8篇
排序方式: 共有1569条查询结果,搜索用时 15 毫秒
971.
First language vocabulary is vulnerable to forgetting after massive exposure to a second language. Two possible factors responsible for the forgetting are degree of semantic overlap between concepts in the two languages and amount of second language exposure. In a laboratory simulation of the language forgetting situation, participants received 10 exposures to a list of words in a foreign language, followed by 2, 5, 10, or 15 exposures to a list in a second foreign language. The second list consisted of either translation equivalents or new concepts. Participants were then tested for retention of the first list. More retroactive interference was found for translation equivalents than for new concepts and for higher degrees of exposure to the second list. When retention of the first list was broken down in terms of gains and losses, effects of both similarity of the second list to the first and amount of exposure to the second list were found only for losses--a fact that points to lack of discriminability as one of the underlying causes of forgetting. Overall, the experimental paradigm proved useful for exploring and developing theories about the causes of first language forgetting.  相似文献   
972.
The authors tested the hypothesis that members of stigmatized groups would be unwilling to report that negative events that occur to them are the result of discrimination when they are in the presence of members of a nonstigmatized group. Supporting this hypothesis, women and African Americans were more likely to report that a failing grade assigned by a man or a European American was caused by discrimination, rather than by their own lack of ability, when they made the judgment privately and in the presence of a fellow stigmatized group member. However, they were more likely to indicate that the cause of the failure was lack of ability, rather than discrimination, when they expected to make these judgments aloud in the presence of a nonstigmatized group member.  相似文献   
973.
974.
Overhearing a language during childhood   总被引:3,自引:0,他引:3  
Despite its significance for understanding of language acquisition, the role of childhood language experience has been examined only in linguistic deprivation studies focusing on what cannot be learned readily beyond childhood. This study focused instead on long-term effects of what can be learned best during childhood. Our findings revealed that adults learning a language speak with a more nativelike accent if they overheard the language regularly during childhood than if they did not. These findings have important implications for understanding of language-learning mechanisms and heritage-language acquisition.  相似文献   
975.
Thirty women who had prophylactic oophorectomy (PO) and thirty women undergoing ovarian cancer surveillance (OCS) completed a one-time in-depth telephone interview exploring information gathering and decision-making processes. There were close similarities between groups, including age, race, marital status, education, menopausal status, number undergoing genetic testing for BRCA mutations, and number of prophylactic mastectomies. The majority of participants indicated overall satisfaction with their final decision. However, many described the information gathering process as frustrating and anxiety provoking. Participants in both groups expressed a need to process medical information within the context of individual psychosocial needs and personal perceptions and experiences. There were recurrent themes with regard to informational and psychosocial needs and personal perceptions and experiences that impacted decision-making process for these women. The present paper is a companion paper to Swisher et al. (J Repr Med 2001, 46:87–94) with the focus of this paper to illustrate the medical informational processing needs identified by this group of women.  相似文献   
976.
977.
Three experiments investigated whether study choice was directly related to judgments of learning (JOLs) by examining people’s choices in cases in which JOLs were dissociated from recall. In Experiment 1, items were given either three repetitions or one repetition on Trial 1. Items given three repetitions received one on Trial 2, and those given one repetition received three on Trial 2—equating performance at the end of Trial 2, but yielding different immediate Trial 2 JOLs. Study choice followed the “illusory” JOLs. A delayed JOL condition in Experiment 2 did not show this JOL bias and neither did study choice. Finally, using a paradigm (Koriat & Bjork, 2005) in which similar JOLs are given to forward and backward associative pairs, despite much worse performance on the backward pairs, study choice again followed the mistaken JOLs. We concluded that JOLs—what people believe they know—directly influence people’s study choices.  相似文献   
978.
The aim of this study is to explore reasons for and against prenatal testing and termination for a range of conditions in women from two different ethnic backgrounds. A total of 19 Pakistani and European women in West Yorkshire, UK, who either had a child with a genetic condition or had terminated a pregnancy for one, completed a questionnaire about their attitudes regarding prenatal testing and termination for 30 different fetal conditions and were interviewed about their reasons for their responses. There were more similarities than differences between the Pakistani and European white women. The most important factor in most women’s decisions about termination of pregnancy was their perception of the quality of the life of a child with the genetic condition, in particular, whether the child would be “suffering.” This was described as either physical suffering, as a result of medical treatment, or as emotional suffering, as a result of psychological and/or social factors. These findings highlight the need for detailed information about the potential quality of life for the child and the child’s family to enable parents to make informed choices, particularly the extent to which the child is likely to suffer, the nature of such potential “suffering” and the extent to which the child could lead a “normal” life. The findings also challenge stereotypes about cultural differences in attitudes about termination of pregnancy.  相似文献   
979.

In this analytic essay. I shall utilize the framework of Individualism and structuralism in an attempt to realize an overview of theory in the sociology of deviance.1 A major advantage of this framework is that it provides a perspective that sensitizes one to a theory's basic locus of causation and motivation for deviance. This takes us into the question of why some people, but not others, commit deviant acts even though they know those acts will be negatively viewed by others and bring sanctions upon themselves. As I apply this framework to selected major theoretical orientations.2 I shall also note limitations of each theory. In addition. I shall Indicate contrasting practical Implications of deviance theory that have far‐ranging ramifications for social life—Interconnections between our changing political orientations and Individualism and structuralism in deviance theory.  相似文献   
980.

A common consumer fraud is the work‐at‐home scheme which promises substantial earnings from “stuffing envelopes” in one's home. The purposes of this research were to describe this scheme in detail and to analyze the process by which the scheme persists. Upon purchasing materials advertised in National Enquirer the researchers found that the principal plan being sold involves a pyramid: those answering ads buy materials encouraging them to advertise in order to sell the same materials. For this study, the content of the materials was analyzed in terms of the elements found in traditional confidence games. It is evident that although their sequence differs, all the elements of confidence games are present in the envelope stuffing scheme. It is argued that the scheme is a quasi confidence game, and its persistence derives at least in part from the same factors that promote traditional confidence games.  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