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   3597篇
  免费   193篇
  国内免费   72篇
管理学   501篇
劳动科学   1篇
民族学   10篇
人口学   92篇
丛书文集   268篇
理论方法论   261篇
综合类   1960篇
社会学   697篇
统计学   72篇
  2024年   15篇
  2023年   50篇
  2022年   68篇
  2021年   69篇
  2020年   105篇
  2019年   105篇
  2018年   112篇
  2017年   137篇
  2016年   107篇
  2015年   174篇
  2014年   249篇
  2013年   505篇
  2012年   243篇
  2011年   228篇
  2010年   176篇
  2009年   181篇
  2008年   173篇
  2007年   201篇
  2006年   193篇
  2005年   168篇
  2004年   158篇
  2003年   140篇
  2002年   88篇
  2001年   76篇
  2000年   63篇
  1999年   17篇
  1998年   9篇
  1997年   9篇
  1996年   9篇
  1995年   4篇
  1994年   8篇
  1993年   4篇
  1992年   5篇
  1991年   2篇
  1990年   1篇
  1989年   2篇
  1988年   7篇
  1982年   1篇
排序方式: 共有3862条查询结果,搜索用时 250 毫秒
801.
Within the last few decades our understanding of the importance of non-cognitive skills for socioeconomic success has grown along with our knowledge of the deleterious impacts of paternal incarceration for child wellbeing. Given the importance of early skills and that elementary-aged children constitute the majority of children with incarcerated parents, understanding the connection between paternal incarceration and the socio-emotional component of children’s non-cognitive development is pressing. Using matching models, data from the newest wave of the Fragile Families and Child Wellbeing Study, and exploring a larger range of behavioral skills than previous literature, this paper provides estimates of the impact of paternal incarceration on children’s behavioral functioning at age 9 using children’s own self-reports. Comparisons to oft-used parent reports are made and heterogeneity by gender is explored. Findings suggest the incarceration of a father increases the antisocial behaviors children self-report, but has null effects on prosocial skill development.  相似文献   
802.
Although feedback is one of the most widely used intervention strategies, data on the specificity of effects has been sparse. The current study examined the effects of individualized public feedback on maintenance of client charts by therapists in a clinic setting. Four types of charting errors were tracked throughout the study. In Phase 1, feedback on two types of charting errors was provided and withdrawn in an ABA fashion. Phase II was a systematic replication of Phase I, using a second group of therapists, in which feedback was provided on the other two types of charting errors in an AB fashion. Results showed that feedback affected only those errors on which it was provided, thus supporting a specificity view of feedback effects. It is suggested that target behaviors be carefully selected and that generalization of feedback effects be assessed and not assumed.  相似文献   
803.
Abstract

This study examines the role of perceived self‐efficacy in mediating relations between mothers’ parenting behavior and variables such as maternal employment status, depressive symptoms, parenting stress, and child behavior problems. Subjects were 93 employed and 95 nonemployed, single, black mothers of a 3–5‐year‐old child who were current and former welfare recipients. Using linear structural relations modeling (LISREL), the findings support a model whereby (a) the more behavior problems the child is perceived to have, the more depressive symptoms the mother feels; (b) the more depressive symptoms the mother feels, the more likely she is to rate herself high in parenting stress; (c) the more depressive symptoms and parenting stress the mother experiences, the lower is the mother's estimate of her self‐efficacy; and (d) the lower the mother's self‐efficacy, the less competent is her parenting. The findings for employment status are similar; i.e., maternal employment predicted a trajectory leading to somewhat better parenting. In addition, child behavior problems were associated with less competent parenting both directly and indirectly through their effect on parenting stress and self‐efficacy. These results suggest that self‐efficacy has import as a mediator of the relations between maternal parenting and other psychosocial variables. There is no evidence, based on these findings, that employment in the low‐wage market is harmful either for single black mothers or their preschool children. However, job availability and an increase in the minimum wage are important policy considerations.  相似文献   
804.
We tested whether gender‐specific vs. common classroom norms were more powerful moderators of the association between a risk factor (rejection) and peer victimization among girls and boys. The participants were 1220 elementary schoolchildren from grades 4–6 (with 10–13 years of age). We compared different multilevel models including combined vs. separate regressions for boys and girls, as well as the effects of norms of the whole class, same‐sex classmates, and cross‐sex classmates. Among girls, the association between rejection and victimization was strongest in classes where bullying behavior was common, and anti‐bullying attitudes were rare among girls. Among boys, the strength of the slope of victimization on rejection could not be explained by either common or gender‐specific classroom norms, but boys' level of bullying behavior was related to overall classroom level of victimization. The findings suggest that contextual factors may contribute to victimization especially among high‐risk girls. The importance of exploring multiple levels of influence on children's social development is discussed.  相似文献   
805.
This paper describes the development of the Perceived Sexual Control inventory (PSC) and a study investigating the relationship between an individual's perception of control over sexual behavior and actual sexual risk behavior in a New York City cohort of 108 HIV+ and 48 HIV‐ gay men. Correlational analysis indicated that reported difficulty controlling sexual behavior was associated with having more male sex partners and sex occasions over lifetime and in the 6 months prior to interview, with a greater number of one‐time partners and out‐of‐home partners, with less monogamy, and with being abstinent in the prior 6 months. Those who perceived difficulty with sexual control were significantly more likely to use cocaine or amyl nitrate (poppers) during sex, to do so on more occasions and to use more drugs overall. Additionally, perceptions of sexual control were found to relate to high risk sexual practices. Those lower in perceived sexual control reported more occasions of receiving anal ejaculation than those who reported greater sexual control. Two subscales (Perceived Control Over Sex Drive and Perceived Control Over Risk Behavior), derived via factor analysis from the 20‐item inventory used to assess perceived sexual control, were also examined in relation to the above variables, and differential findings are discussed. The overall pattern of findings supports the construct validity of the PSC.  相似文献   
806.
Abstract

Wiegand and Geller propose that the salient role of positive reinforcement in behavior analysis should enable a melding of behavior analysis with developments and concepts that have appeared under the banner of “positive psychology.” However, as is true of many words, the term positive has more than one meaning, and the positive of positive reinforcement is not the same as the positive of “positive psychology.” The latter is parasitic upon the vernacular, as “nice” or “desirable,” whereas the former is analogous to the algebraic “add” as when an action produces the appearance (as contrasted with the removal) of some event. The distinct meanings become clear with recognition that addictive and criminal behavior often are maintained through positive reinforcement, and that negative reinforcement of behavior often is benign and beneficial to the persons involved. In addition, most of the phenomena identified with positive psychology that Wiegand and Geller propose to embrace entail more subtle and complex combinations of behavioral principles than these authors acknowledge. Wiegand and Geller also propose to accommodate vernacular assumptions in ways that separate their approach from its conceptual base; this risks impairing the effectiveness of their work whether or not its marketability would be improved.  相似文献   
807.
保护性医疗及其行使对策   总被引:1,自引:0,他引:1  
保护性医疗作为我国临床实践中长期存在的医疗措施,近年来开始受到较多质疑。在医学模式转型背景下,保护性医疗面临与患者知情同意权、新医患关系模式及自身实效性问题等的矛盾与困境。为更合理地适用保护性医疗,应将患者适用保护性医疗必要性评估作为前置条件,并根据病程变化做出调整。  相似文献   
808.
This study evaluates the effect of the documentary Under the Dome on the concern and responsive behaviors of the public regarding air pollution in China, with two surveys conducted before and after watching the documentary. Employing difference-in-differences regression, this study answers two research questions: (1) Does Under the Dome change public concern about air pollution? (2) Does Under the Dome change public behaviors in response to air pollution, including protective behaviors (i.e., wearing face masks) and mitigation behaviors (i.e., reducing car driving)? We find that the information campaign (1) protects against the decline of public concern about air pollution in Beijing and (2) moderates the degree to which people's perceived severity, perceived susceptibility, and sense of self-efficacy influence protective behaviors and moderates the degree to which people's belief in the cooperative behaviors by others influences mitigation behaviors. This study provides evidence that information campaigns of the Under the Dome type are effective in raising public awareness; however, the information campaign did not directly influence public protective and mitigation behaviors.  相似文献   
809.
Abstract

This paper presents findings from the first large-scale quantitative study into HIV-related behavior among transgender people in Hong Kong. A survey of 195 transgender people found that only one-third of those who had engaged in sexual behavior in the past 3?months reported consistent condom use. Stable relationships, beliefs in low HIV transmission risk, and condom inaccessibility were cited as reasons for inconsistent condom use. The HIV testing figures were also strikingly low. This study demonstrates an urgent need for addressing HIV issues among transgender people in Hong Kong as there are currently no such specific services.  相似文献   
810.
This research aimed to investigate the correlation between subjective well-being and submissive behavior and self-esteem in students in the early adolescent period. The research was completed with a relational design. The research group comprised sixth, seventh, and eighth class middle school students in the spring term of the 2015–2016 academic year in Trabzon province. Data collection tools included a Personal Information Form, Submissive Behavior Scale, Two-Dimensional Self-Respect Scale (Self-Liking and Self-Confidence Scale), Satisfaction with Life Scale and Positive and Negative Affect Schedule. The results of the correlation analysis found a significant positive correlation between subjective well-being and self-esteem (r?=?0.54, p?<?0.01; 95% CI [0.44, 0.61], Cohen’s d?=?1.28); however, the correlation between subjective well-being and submissive behavior was not significant (r?=?–0.02, p?>?0.05; 95% CI [–0.11, 0.09], Cohen’s d?=?0.04). There was a significant negative correlation identified between self-esteem and submissive behavior (r?=?–0.10, p < 0.05; 95% CI [–0.20, –0.01], Cohen’s d?=?–0.20). Additionally, according to our findings, self-esteem accounts for 29% of the variation in well-being (F(1, 367)?=?150.79, p?<?0.001). The contribution of self-esteem to the subjective well-being explanatory model was found to be significant (sz?=?0.54, p?<?0.001).  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