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   3878篇
  免费   1427篇
  5305篇
  2022年   6篇
  2021年   82篇
  2020年   95篇
  2019年   389篇
  2018年   271篇
  2017年   401篇
  2016年   391篇
  2015年   356篇
  2014年   314篇
  2013年   568篇
  2012年   303篇
  2011年   222篇
  2010年   252篇
  2009年   228篇
  2008年   209篇
  2007年   145篇
  2006年   120篇
  2005年   129篇
  2004年   104篇
  2003年   106篇
  2002年   124篇
  2001年   86篇
  2000年   71篇
  1999年   42篇
  1998年   17篇
  1997年   15篇
  1996年   12篇
  1995年   10篇
  1994年   10篇
  1993年   7篇
  1992年   17篇
  1991年   19篇
  1990年   12篇
  1989年   12篇
  1988年   13篇
  1987年   6篇
  1986年   6篇
  1984年   7篇
  1983年   9篇
  1982年   8篇
  1981年   13篇
  1980年   7篇
  1978年   9篇
  1976年   8篇
  1974年   10篇
  1971年   6篇
  1968年   6篇
  1957年   4篇
  1956年   5篇
  1955年   4篇
排序方式: 共有5305条查询结果,搜索用时 15 毫秒
991.
Participants were pretrained and tested on mutually entailed trigonometric relations and combinatorially entailed relations as they pertained to positive and negative forms of sine, cosine, secant, and cosecant. Experiment 1 focused on training and testing transformations of these mathematical functions in terms of amplitude and frequency followed by tests of novel relations. Experiment 2 addressed training in accordance with frames of coordination (same as) and frames of opposition (reciprocal of) followed by more tests of novel relations. All assessments of derived and novel formula‐to‐graph relations, including reciprocal functions with diversified amplitude and frequency transformations, indicated that all 4 participants demonstrated substantial improvement in their ability to identify increasingly complex trigonometric formula‐to‐graph relations pertaining to same as and reciprocal of to establish mathematically complex repertoires.  相似文献   
992.
In Experiment 1, more and less relations were trained for arbitrary Stimuli A1 and A2 with 3 children with autism. The following conditional discriminations were then trained: A1‐B1, A2‐B2, B1‐C1, B2‐C2. In subsequent tests, participants showed derived more‐less mands (mand with C1 for more and mand with C2 for less). A training procedure reversed the B‐C conditional discriminations, and participants then showed derived reversed more—less mands (mand with C1 for less, C2 for more). Baseline B‐C relations were retrained, and participants subsequently demonstrated a return to the original derived manding. A second experiment with 1 prior participant and 1 naive participant removed a possible confounding effect. Establishing derived manding may be an advantageous component when teaching a mand repertoire in applied settings.  相似文献   
993.
This study was designed to examine whether self‐esteem can be used as a source of evaluative conditioning, and whether implicit or explicit self‐esteem was more predictive of the evaluative conditioning effect. Moreover, the role of contingency awareness in the acquisition of the evaluative conditioning effect was also examined. Words related to the self and a general other were served as unconditioned stimuli (USs) in the evaluative conditioning process in order to see whether the evaluation could be transferred to neutral, abstract paintings after 10 times of pairing. An evaluative conditioning effect was demonstrated in that the evaluation of the paintings became more positive after repeatedly paired with words about the self but not words about general others. Implicit self‐esteem predicted the magnitude of the evaluative conditioning effect, while the association between explicit self‐esteem and the evaluative conditioning effect was nonsignificant, both with and without the effect of contingency awareness being controlled for. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
994.
995.
996.
Cameroonian university students (N = 666) assessed whether certain different societal positions that the law grants to women and men (the husband chooses the marital home, the husband wields parental power, a married woman cannot freely engage in trade, the husband administers his wife's personal property) and certain cultural practices (female genital mutilation, parents arranging their children's marriage) were seen as violations of women's human rights. Justifications for the choices were also analysed. Female genital mutilation was most often seen as a violation of women's human rights, and the husband selecting the marital home was least often seen as a violation. These differences were explained by cultural specificities. Women more often than men saw the cases as violations of rights. Respondents coming from the North saw the cases less often as violations of rights than respondents from other geocultural areas, which was in accordance with their previously observed higher collectivism. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
997.
The ‘NIMBY’ (Not In My Back Yard) concept is commonly used to explain public opposition to new developments near homes and communities, particularly arising from energy technologies such as wind farms or electricity pylons. Despite its common use, the concept has been extensively critiqued by social scientists as a useful concept for research and practice. Given European policy goals to increase sustainable energy supply by 2020, deepening understanding of local opposition is of both conceptual and practical importance. This paper reviews NIMBY literature and proposes an alternative framework to explain local opposition, drawing upon social and environmental psychological theory on place. Local opposition is conceived as a form of place‐protective action, which arises when new developments disrupt pre‐existing emotional attachments and threaten place‐related identity processes. Adopting a social constructivist perspective and drawing on social representation theory, a framework of place change is proposed encompassing stages of becoming aware, interpreting, evaluating, coping and acting, with each stage conceived at multiple levels of analysis, from intrapersonal to socio‐cultural. Directions for future research and potential implications of the place‐based approach for public engagement by energy policy‐makers and practitioners are discussed. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
998.
Maternal schizophrenia is known to have an adverse effect on the quality of mother–infant interaction; and children of parents with severe mental illness run a higher risk of poor mental health and social outcomes. Hence, children raised by a parent with schizophrenia may be less likely to attain secure attachment, although there is less evidence so far to support this. Moreover, there is a lack of research in this field that focusses on the needs and experiences, the strengths and vulnerabilities, of the children themselves. Qualitative methods are thus needed to generate new insights and hypotheses. The present study uses semi-structured interviews with 23 adults who, as children, were raised with a parent who experienced schizophrenia. This reveals a range of attachment problems, resulting in difficulties in forming secure adult relationships. Problems with trust and intimacy were found to be common.  相似文献   
999.
Although past research has associated loneliness with negative perceptions of others, P. Christensen and D. A. Kashy (1998), using the social relations model (SRM), found that among new acquaintances, loneliness was associated with more positive other‐perceptions. SRM was used to examine loneliness and interpersonal perception within existing social networks. Seventy‐three university students in the United States rated themselves and others on 19 attributes and also judged how they thought others saw them (meta‐perceptions). Results indicated that lonely people tended to be more negative toward closer targets and somewhat positive toward less close acquaintances. Lonely people had lower self‐regard and perceived self‐regard, invariant across acquaintanceship, and were rated more negatively by others. Relationship contexts thus moderate effects of loneliness on other‐perceptions.  相似文献   
1000.
Children's suggestibility is typically measured using a three‐stage ‘event–misinformation–test’ procedure. We examined whether suggestibility is influenced by the time delays imposed between these stages, and in particular whether the temporal discriminability of sources (event and misinformation) predicts performance. In a novel approach, the degree of source discriminability was calculated as the relative magnitude of two intervals (the ratio of event–misinformation and misinformation–test intervals), based on an adaptation of existing ‘ratio‐rule’ accounts of memory. Five‐year‐olds (n =150) watched an event, and were exposed to misinformation, before memory for source was tested. The absolute event–test delay (12 versus 24 days) and the ‘ratio’ of event–misinformation/misinformation–test intervals (11:1, 3:1, 1:1, 1:3 and 1:11) were manipulated across participants. The temporal discriminability of sources, measured by the ratio, was indeed a strong predictor of suggestibility. Most importantly, if the ratio was constant (e.g. 18/6 versus 9/3 days), performance was remarkably similar despite variations in absolute delay (e.g. 24 versus 12 days). This intriguing finding not only extends the ratio‐rule of distinctiveness to misinformation paradigms, but also serves to illustrate a new empirical means of differentiating between explanations of suggestibility based on interference between sources and disintegration of source information over time.  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