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   63037篇
  免费   1834篇
  国内免费   16篇
  2020年   454篇
  2019年   541篇
  2018年   3990篇
  2017年   3342篇
  2016年   2916篇
  2015年   803篇
  2014年   769篇
  2013年   3254篇
  2012年   1826篇
  2011年   3507篇
  2010年   3177篇
  2009年   2139篇
  2008年   2728篇
  2007年   3172篇
  2006年   1028篇
  2005年   1165篇
  2004年   1042篇
  2003年   939篇
  2002年   909篇
  2001年   1393篇
  2000年   1368篇
  1999年   989篇
  1998年   478篇
  1997年   418篇
  1992年   928篇
  1991年   858篇
  1990年   886篇
  1989年   773篇
  1988年   756篇
  1987年   729篇
  1986年   773篇
  1985年   841篇
  1984年   638篇
  1983年   586篇
  1982年   432篇
  1981年   410篇
  1979年   743篇
  1978年   467篇
  1977年   447篇
  1976年   453篇
  1975年   620篇
  1974年   707篇
  1973年   736篇
  1972年   645篇
  1971年   598篇
  1970年   608篇
  1969年   582篇
  1968年   782篇
  1967年   695篇
  1966年   622篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
We investigated the role of implicit and explicit associations between harm and COVID-19 vaccines using a large sample (N = 4668) of online volunteers. The participants completed a brief implicit association test and explicit measures to evaluate the extent to which they associated COVID-19 vaccines with concepts of harmfulness or helpfulness. We examined the relationship between these harmfulness/helpfulness COVID-19 vaccine associations and vaccination status, intentions, beliefs, and behavior. We found that stronger implicit and explicit associations that COVID-19 vaccines are helpful relate to vaccination status and beliefs about the COVID-19 vaccine. That is, stronger pro-helpful COVID-19 vaccine associations, both implicitly and explicitly, related to greater intentions to be vaccinated, more positive beliefs about the vaccine, and greater vaccine uptake.  相似文献   
992.
Although negative anticipatory emotions are typically seen as risk factors for poorer psychological outcomes over COVID-19, emotion theorists suggest that this risk may be attenuated if balanced by the experience of positive emotion. Thus, the current study examined whether interactions between positive and negative anticipatory emotions were concurrently associated with psychological distress and greater personal wellbeing/posttraumatic growth (PTG) at three distinct periods (i.e., pre-lockdown, during lockdown, post-lockdown), and whether associations varied by these three COVID-19 time periods. The study utilizes two large longitudinal Australian samples, surveyed in 2020 prior to, during, and after a strict 4-month lockdown that occurred in Australia. Overall, positive emotions attenuated the adverse psychological outcomes arising from higher levels of negative emotion (i.e., higher psychological distress and lower personal wellbeing). Observed effects varied according to COVID-19 threat exposure. Specifically, the interaction was significantly associated with psychological distress prior to the lockdown for Sample 2, and during the lockdown for both samples. The interaction was significantly associated with wellbeing (Sample 2) prior to, and during, the lockdown but only marginally associated post-lockdown. The interaction, however, was not significantly associated with PTG (Sample 1). The results suggest that it is valuable for future research to consider greater emotional complexity (i.e., mixed emotions) over COVID-19, and other stressors more generally, to encompass a more nuanced understanding of resilience.  相似文献   
993.
994.
995.
996.
997.
998.
999.
S mith G. J. W., R uuth E., F ranzén G. & S jöholm L. Intermittent regressions in a serial afterimage experiment as signs of schizophrenia. Scand. J. Psychol ., 1972 , 13 , 27 33.—A group of 35 young patients suspected of schizophrenia were tested in a serial afterimage (AI) experiment and were also rated on the Rockland-Pollin scale. Subjects with high psychotic scores showed one or more regressions to immature (size-constant, positive, physiognomic) images in their Al serials, images typical of children who cannot clearly distinguish their Ails as subjective phenomena distinct from the outside world. The Al test thus indicates schizophrenics to be characterized by intermittent withdrawal into a world of experiencing the self and non-self as not clearly distinguished. Regressions were rare in two control groups.  相似文献   
1000.
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