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   25849篇
  免费   252篇
  2023年   42篇
  2022年   30篇
  2021年   47篇
  2020年   116篇
  2019年   117篇
  2018年   3593篇
  2017年   2922篇
  2016年   2403篇
  2015年   325篇
  2014年   193篇
  2013年   683篇
  2012年   812篇
  2011年   2656篇
  2010年   2666篇
  2009年   1652篇
  2008年   1914篇
  2007年   2411篇
  2006年   255篇
  2005年   438篇
  2004年   400篇
  2003年   350篇
  2002年   267篇
  2001年   144篇
  2000年   155篇
  1999年   121篇
  1998年   127篇
  1997年   101篇
  1996年   88篇
  1995年   77篇
  1994年   87篇
  1993年   56篇
  1992年   75篇
  1991年   43篇
  1990年   64篇
  1989年   33篇
  1988年   26篇
  1987年   44篇
  1986年   39篇
  1985年   41篇
  1984年   37篇
  1983年   53篇
  1982年   44篇
  1981年   34篇
  1980年   30篇
  1979年   43篇
  1978年   52篇
  1977年   28篇
  1976年   30篇
  1974年   19篇
  1973年   19篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
921.
922.
The third wave of the National Congregations Study (NCS‐III) was conducted in 2012. The 2012 General Social Survey asked respondents who attend religious services to name their religious congregation, producing a nationally representative cross‐section of congregations from across the religious spectrum. Data about these congregations were collected via a 50‐minute interview with one key informant from 1,331 congregations. Information was gathered about multiple aspects of congregations’ social composition, structure, activities, and programming. Approximately two‐thirds of the NCS‐III questionnaire replicates items from 1998 or 2006–2007 NCS waves. Each congregation was geocoded, and selected data from the 2010 U.S. Census or American Community Survey have been appended. We describe NCS‐III methodology and use the cumulative NCS dataset (containing 4,071 cases) to describe five trends: more ethnic diversity, greater acceptance of gays and lesbians, increasingly informal worship styles, declining size (but not from the perspective of the average attendee), and declining denominational affiliation.  相似文献   
923.
924.
The current investigation sought to determine whether a standard outpatient dose of dialectical behavior therapy (DBT) skills training (2 h per week) coupled with standard CBT treatment would be sufficient to produce changes in affect regulation over the course of day hospitalization treatment. In an uncontrolled pre-post treatment design, 65 women diagnosed with anorexia nervosa or bulimia nervosa were assessed at the beginning of treatment and at the end of treatment on affect regulation. Findings indicated that participants demonstrated a significant improvement in their ability to regulate affect, suggesting that weekly DBT treatment may play an important role in producing changes in affect regulation. Secondary analyses on eating disorder outcomes revealed a significant increase in weight gain as well as a significant reduction in restriction, bingeing, purging and eating disordered cognitions. Findings are discussed in the context of clinical and treatment implications for those with severe eating disorders.  相似文献   
925.
The present research investigated individual differences in individualism and collectivism as predictors of people's reactions to cities. Psychology undergraduate students (N = 148) took virtual guided tours around historical cities. They then evaluated the cities’ liveability and environmental quality and completed measures of individualism and collectivism. Mediation analyses showed that people who scored high in self-responsibility (individualism) rated the cities as more liveable because they perceived them to be richer and better resourced. In contrast, people who scored high in collectivism rated the cities as having a better environmental quality because they perceived them to (1) provide a greater potential for community and social life and (2) allow people to express themselves. These results indicate that people's evaluations of virtual cities are based on the degree to which certain aspects of the cities are perceived to be consistent with individualist and collectivist values.  相似文献   
926.
We theorized that interpersonal relationships can provide structures for experience. In particular, we tested whether primes of same-sex versus mixed-sex relationships could foster cognitive-perceptual processing styles known to be associated with independence versus interdependence respectively. Seventy-two participants visualized either a same-sex or other-sex relationship partner and then performed two measures of cognitive-perceptual style. On a computerized Rod and Frame Test, individuals were more field-dependent after visualizing a mixed-sex versus same-sex relationship partner. On a measure involving perceptions of group behavior, participants demonstrated more holistic/contextually based perception after being primed with a female versus male relationship partner. These findings support the hypothesis that activated cognitive structures representing interpersonal relationships can shape individuals’ cognitive-perceptual performance.  相似文献   
927.
In this paper we argue that there is a kind of moral disagreement that survives the Rawlsian veil of ignorance. While a veil of ignorance eliminates sources of disagreement stemming from self-interest, it does not do anything to eliminate deeper sources of disagreement. These disagreements not only persist, but transform their structure once behind the veil of ignorance. We consider formal frameworks for exploring these differences in structure between interested and disinterested disagreement, and argue that consensus models offer us a solution concept for disagreements behind the veil of ignorance.  相似文献   
928.
School System Evaluation by Value Added Analysis Under Endogeneity   总被引:1,自引:0,他引:1  
Value added is a common tool in educational research on effectiveness. It is often modeled as a (prediction of a) random effect in a specific hierarchical linear model. This paper shows that this modeling strategy is not valid when endogeneity is present. Endogeneity stems, for instance, from a correlation between the random effect in the hierarchical model and some of its covariates. This paper shows that this phenomenon is far from exceptional and can even be a generic problem when the covariates contain the prior score attainments, a typical situation in value added modeling. Starting from a general, model-free definition of value added, the paper derives an explicit expression of the value added in an endogeneous hierarchical linear Gaussian model. Inference on value added is proposed using an instrumental variable approach. The impact of endogeneity on the value added and the estimated value added is calculated accurately. This is also illustrated on a large data set of individual scores of about 200,000 students in Chile.  相似文献   
929.
Autism shows a high degree of comorbidity with anxiety disorders. Adolescence is a time of increased stress and vulnerability to internalising problems. This study addresses for the first time the degree of genetic and environmental overlap between autistic traits (total measure and subscales) and internalising traits in a community-based adolescent twin sample. Parents of 12-14-year-old twins (N?=?3,232 pairs; 3,460 males, 3,004 females) reported on the twins’ internalising and autistic traits. Autistic trait subscales were created using principal component analysis. Bivariate twin model-fitting was conducted. Autistic and internalising traits correlated moderately (r?=?0.30). Genetic influences on individual traits were substantial but genetic overlap between traits was moderate (genetic correlation: males?=?0.30, females?=?0.12). Shared environmental influences were low for internalising traits and moderate for autistic traits, and showed considerable overlap (shared environmental correlation: males?=?0.53, females?=?1). Nonshared environmental influences were moderate for internalising traits and low for autistic traits and showed low overlap. A multiple component solution was found for autistic traits and of the derived subscales, autistic-like ‘Social Unease’ showed the most phenotypic and genetic overlap with internalising traits.  相似文献   
930.
Negative (vs positive) intergroup contact may have a disproportionately large impact on intergroup relations because of valence‐salience effects, whereby negative contact causes higher category salience (Paolini, Harwood, & Rubin, 2010). One correlational and three experimental studies in three conflict areas (Northern Ireland, Arizona's border area, and Cyprus; Ns = 405, 83, 76, and 91) tested the moderation of these valence‐salience effects by individuals' histories of outgroup contact. Consistent with a perceived fit principle valence‐salience effects of face‐to‐face, television‐mediated, and imagined contact held among individuals with negative or limited histories of outgroup contact; these effects were significantly reduced or nonsignificant among individuals with positive or extensive past outgroup contact. These moderation effects suggest that positive and diverse intergroup contact in the past buffers against the harmful effects of negative contact experiences in the present, thus limiting the potential for negative spiralling of intergroup relations. Copyright © 2014 John Wiley & Sons, Ltd.  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