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   5194篇
  免费   1489篇
  2024年   2篇
  2023年   14篇
  2022年   20篇
  2021年   90篇
  2020年   121篇
  2019年   441篇
  2018年   328篇
  2017年   443篇
  2016年   425篇
  2015年   407篇
  2014年   370篇
  2013年   725篇
  2012年   405篇
  2011年   334篇
  2010年   320篇
  2009年   283篇
  2008年   283篇
  2007年   224篇
  2006年   177篇
  2005年   194篇
  2004年   169篇
  2003年   179篇
  2002年   181篇
  2001年   104篇
  2000年   92篇
  1999年   66篇
  1998年   36篇
  1997年   31篇
  1996年   28篇
  1995年   24篇
  1994年   26篇
  1993年   25篇
  1992年   12篇
  1991年   15篇
  1990年   8篇
  1989年   12篇
  1988年   8篇
  1987年   6篇
  1986年   9篇
  1985年   10篇
  1984年   6篇
  1983年   4篇
  1982年   5篇
  1981年   5篇
  1979年   2篇
  1978年   3篇
  1977年   3篇
  1976年   2篇
  1975年   2篇
  1974年   2篇
排序方式: 共有6683条查询结果,搜索用时 46 毫秒
991.
Gender segregation is often explained by children being interested in interacting with other children who behave similarly to themselves. Children??s beliefs about girls and boys (i.e., their gender cognitions) may also play a role in gender segregation, but this idea has received little attention. In this study, we proposed a model of gender segregation that included similarity on gender-typed behavioral qualities (e.g., rough and tumble play) and gender cognitions concerning perceived similarity to same-gender others, and we assessed whether this more comprehensive heuristic model predicted observed peer interactions in young U.S. children (n?=?74; M age = 51 m; middle-class families). A multi-method design was employed including observations of behavior and child reports of gender cognitions. Support was found for the linkages proposed in this comprehensive model for boys; partial support was found for girls. Specifically, the inclusion of gender cognitions was supported for both genders: gender cognitions about perceived similarity related to interactional partner choices for both girls and boys, and accounted for variance in observed partner choices even after behavioral similarity was included in the model. The traditional link concerning behavioral similarity on rough-and-tumble play predicted boys?? but not girls?? interactions. The findings extend knowledge about the role of social cognitions in social behavior, and are consistent with ideas proposed by gender schema theory and other constructivist theories.  相似文献   
992.
China suffered both a heavy snow‐hit and a major earthquake in 2008. To investigate the effects of disasters on risky decision making, opportunity samples were obtained by recruiting residents in both devastated and non‐devastated areas. In a survey (Study 1) conducted shortly after the heavy snow‐hit, we found that people were not always more risk averse after a disaster as previous studies had claimed and that they were inclined to approach an option with ‘low probability associated gain’ and to avoid an option with ‘low probability associated loss’. These findings were replicated in a consecutive survey (Study 2) conducted after the Wenchuan earthquake. It was further found that the popularity of both insurance and lottery, which presumably contributed to overweighing of small probabilities, was detected to have been enhanced with substantial exposure to the earthquake disaster. The implications of these findings for risk education and government policy making were discussed. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
993.
In forensic contexts it is common that witnesses retell and discuss the experienced event many times. It is of forensic importance to understand how this influences memory and meta‐memory. Eighty‐nine participants viewed a short film and were assigned to one of four conditions: (1) Laboratory discussion (five discussions of the event with a confederate), (2) Family discussion (five discussions of the event with a family member), (3) Retell (five retellings of the event) and (4) Control. Three weeks later participants gave an open free recall, and then 3 days later confidence judged the recalled information. The results showed significant differences between the four conditions on number of correct items, incorrect items, accuracy, confidence and calibration. The results suggest that discussion of an experienced event may reduce some of the beneficial memory and meta‐memory effects caused by mere retelling, but may have no great negative effects compared to a control condition. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   
994.
This paper proposes that task format (choosing or rejecting) moderates the effect of ambiguity aversion. Specifically, an ambiguous option is more attractive in a choosing task than in a rejecting task compared with a risky option. The author performed three experiments to test the propositions. In the first experiment, participants showed less ambiguity aversion when they had to choose a preferred option (risky or ambiguous) compared with when they had to reject an option they preferred less. In the second experiment with a monetary incentive, participants had to form a cash‐equivalent estimate for both a risky gamble and an ambiguous gamble in a traditional Ellsberg scenario. The ambiguous option emerged as more attractive than the risky option in the choosing task compared with the rejecting task. The third experiment showed that the participants' decision rationale mediated the effect of the task format on choice. These three experiments support the proposition that task formats moderate the effect of ambiguity aversion. On the basis of the findings, the author provides suggestions for practice and further research. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   
995.
Differentiation of self – a core construct of Bowen's (Bowen, M. (1978). Family therapy in clinical practice. New York: Jason Aronson) family systems theory – was examined as a possible predictor of psychological health and physical health and as a mediator and moderator of the relation between overall functioning and psychological health and physical health. A total of 818 American college students participated (mean age?=?23.72, SD?=?4.79) in this study. Differentiation of self was correlated and was predictive of psychological health, as measured by the Beck depression inventory, and physical health, as measured by body mass index (BMI). A multivariate multiple regression model revealed that differentiation of self partially mediated the effects of overall functioning on depressive symptomatology and on BMI. Results from a hierarchical regression model showed that differentiation of self moderated the relation between overall functioning and depressive symptomatology but did not moderate the relation between overall functioning and BMI. Taken together, these preliminary findings provide initial evidence of the importance of the associations between family systemic factors (differentiation of self) and psychological and physical health factors among American college populations.  相似文献   
996.
997.
Despite its contemporary and theoretical importance in numerous social scientific disciplines, institutional confidence research is limited by a lack of consensus regarding the distinctions and relationships among related constructs (e.g., trust, confidence, legitimacy, distrust, etc.). This study examined four confidence-related constructs that have been used in studies of trust/confidence in the courts: dispositional trust, trust in institutions, obligation to obey the law, and cynicism. First, the separability of the four constructs was examined by exploratory factor analyses. Relationships among the constructs were also assessed. Next, multiple regression analyses were used to explore each construct's independent contribution to confidence in the courts. Finally, a second study replicated the first study and also examined the stability of the institutional confidence constructs over time. Results supported the hypothesized separability of, and correlations among, the four confidence-related constructs. The extent to which the constructs independently explained the observed variance in confidence in the courts differed as a function of the specific operationalization of confidence in the courts and the individual predictor measures. Implications for measuring institutional confidence and future research directions are discussed.  相似文献   
998.
This study examined the association between self‐efficacy and self‐rated abilities in conjunction with adjustment and academic performance with a diverse sample of 271 undergraduate college students with majors in the liberal arts. Significant positive associations between and among the constructs in different combinations were found. The discussion focuses on the theoretical and practice implications of the results and offers suggestions for further research.  相似文献   
999.
Oregon Violent Death Reporting System data were linked with Veterans Affairs (VA) administrative data to identify and describe veterans who completed suicide in Oregon from 2000 to 2005 (n = 968), and to describe their VA health care utilization in the year prior to death. Twenty-two percent had received health care in the VA system. Of these, 57% did not have mental health diagnoses and 58% had not seen mental health professionals. A larger proportion of those who accessed care were VA-enrolled and received service-connected disability benefits. Fifty-five veterans were hospitalized during the year prior to death. Of these, 33% completed suicide within 30 days of a hospitalization. Further development of suicide prevention strategies for veterans in the community, including general medical treatment settings, is indicated.  相似文献   
1000.
Gender differences in occupational values have been well-established, yet little research has examined the predictive qualities of individual difference variables such as self-perceived masculinity/femininity on values and these constructs?? predictive role in the traditionality and perceived value affordances of future occupations??or the values persons expect a job to fulfill. Undergraduates (185 males, 401 females) from the Eastern, Southern, and Midwestern United States reported their occupational values, self-perceived masculinity/femininity, expected occupations, and the perceived value affordances of these jobs. Results indicated significant relationships among self-perceived masculinity/femininity, value endorsements, and the perceptions of value affordances. Results also indicated some differences among the three subsamples as well as gender differences across subsamples. Also, value endorsements mediated the relationships between self-perceived masculinity/femininity and traditionality and self-perceived masculinity/femininity and perceived value affordances. Thus, the values associated with jobs and personal value endorsements are important variables in career choice. The implications of these findings are discussed, and it is suggested that perceptions of occupational value affordances may be an entry point for intervention when trying to reduce occupational gender segregation.  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