The expected and unexpected media effects on youth’s (mis)perceptions of peer norms: Chinese college students’ overestimation of peer smoking prevalence

Youth’s perceptions of peer norms have profound effects on their attitudes and behaviors. Unfortunately, their perceptions of peers tend to be biased. To investigate the role of media in the formation of misperceived peer norms, the current study tested and compared two media-effect mechanisms: the direct exemplar mechanism and the indirect influence of presumed influence (IPI) mechanism. The two mechanisms were tested in a sample (n = 1746) that is representative of college students in one large university in China, based on which the actual and perceived campus smoking rates were examined. The individual-level perceived peer smoking prevalence was then analyzed in comparison with the campus-level actual smoking prevalence. The results revealed serious overestimations of peer smoking prevalence. As predicted, pro-smoking media content significantly heightened smoking prevalence estimates through both exemplar and IPI mechanisms. In contrast, anti-smoking messages did not elicit any intended effect through the IPI mechanism, but showed a boomerang effect through the exemplar mechanism. These findings suggest that both pro- and anti-smoking media content may be responsible for inflated perceptions of peer smoking among youth.     

Beyond interviewer effects in the standardized measurement of ego-centric networks

The effects which interviewers exert on the collection of ego-centric networks have recently come into the focus of methodological considerations. Studies consistently show that the size of networks varies depending on the interviewer. We would like to expand on this research strand by pointing to different aspects which have so far gone unremarked in the discussion. First, size is mainly analysed as a network measure which is influenced during data collection, while other common measures such as network density or composition have not received sufficient consideration. Second, large-scale surveys using face-to-face interviews usually allocate interviewers to a single sampling point. Differences between sampling points (locality effects) are attributed to interviewer effects. Hence, we disentangle the effects of the locality and interviewer. Third, the discussion on interviewer effects often follows an “actor-oriented” consideration of how data collection situations are structured by interviewers. Expanding this approach from a relational perspective, we consider the relationship between the interviewers and respondents and whether this relationship influences the collection of network data. To test our hypotheses about the influence of interviewers, the locality and the interviewer-respondent relationship on different network measures, we use data from the 2010 German General Social Survey (n = 2827 respondents, n = 220 interviewers). The multilevel analyses show that the relationship between the interviewer and the respondent is not very relevant. Furthermore, the analyses show that interviewers have an influence on the network size but not on measures of their composition. However, evidence on the prevalence of locality or interviewer effects is mixed. Finally, homophilous interviewer-respondent relationships have very little effect on network characteristics. We find evidence of training and fatigue effects on network size. However, much of the variation in network size caused by the interviewer still remains unexplained. We draw conclusions on how to organize interview situations in surveys.     

社会保障、代际支持如何影响城镇老年人退而不休?

对城镇老年人退而不休的动因分析,是合理开发和管理老年人力资源的前提.基于代际支持的传导作用,研究发现,具有较高社会保障水平、健康状况较好和学历较高的城镇老年人选择退而不休更倾向于实现自我价值,同时,足够的家庭养老支持对他们积极发挥余热的动机有正向推动作用;而健康状况较差和学历较低的城镇老年人,由于家庭养老支持不足、其付出与获得的家庭资源不对等以及由此产生的社会保障"外溢"等压力,更可能以获得收入为动机选择退而不休,进而导致其发展权利受损.因此,有差别地开发和管理老年人力资源、谨慎制定并实施延迟退休政策,对实现积极、健康的老龄化社会有着重要的意义.     

An approximate dual-self model and paradoxes of choice under risk

We derive a simplified version of the model of Fudenberg and Levine, 2006, Fudenberg and Levine, 2011 and show how this approximate model is useful in explaining choice under risk. We show that in the simple case of three outcomes, the model can generate indifference curves that “fan out” in the Marschak–Machina triangle, and thus can explain the well-known Allais and common ratio paradoxes that models such as prospect theory and regret theory are designed to capture. At the same time, our model is consistent with modern macroeconomic theory and evidence and generates predictions across a much wider set of domains than these models.     

An investigation of the endowment effect in the context of a college housing lottery

The endowment effect was examined in a two-part study in the context of a college housing lottery. Students who were awarded their first choice of residence hall were asked the lowest dollar amount they would be willing to accept (WTA) to give up their first choice hall whereas students who were denied their first choice were asked the highest dollar amount they would be willing to pay (WTP) to obtain their first choice. Results from the initial assessment showed the presence of the endowment effect regarding students’ valuation of their first choice residence hall immediately after the housing lottery (i.e., WTA price was significantly higher than WTP price). The follow-up surveyed participants from the initial assessment who responded when contacted a second time after they had experienced two months of life in the residence hall they were awarded in the lottery. Results from the follow-up showed that the endowment effect was still present after experiencing life in the residence hall. Moreover, further analyses revealed that the endowment effect was, in fact, enhanced after the living experience. These findings demonstrate that within the context of a housing lottery, a highly-valued commodity, long-term experiences substantially increase the magnitude of the endowment effect, even when controlling for other factors that have been shown to impact this effect.     

日本护理保险的制度效应分析

面对人口老龄化程度的不断加深以及由此带来的社会保障制度困境,日本政府以建立护理保险制度为突破口,拉开了社会保障基础体制改革的序幕。经过8年的制度运作,日本护理保险的制度效应得失并存,一方面在一定程度上实现了老年护理服务的"由国家到地方"、"由官到民"和"由家庭到社会"的转型,初步达到了制度设计之初的目标;另一方面也带来公平性、地方财政困难和制度整合缺失等问题,对护理保险制度的可持续性带来挑战。     

合同法定形式效力比较及我国立法的完善

《合同法》在合同形式方面做出了许多与市场经济相适应的新规定 ,但由于对法定形式的法律性质和效力缺乏明确规定 ,引起法学理论和审判实践上的诸多不同理解和做法。借鉴国外的有关规定 ,补充规定“缺少法定书面形式的合同无效” ,修改第三十六条的“合同成立”为“合同有效” ,删除第四十四条关于批准、登记生效的规定 ,使我国合同形式的法律趋于完善成为必要。     

浙江省产业结构的投入产出关联测度及应用研究

基于浙江省2002年和2005年42部门投入产出表,运用投入产出分析方法分别测算各个部门的影响力系数和感应度系数,并按各个部门这两个系数的大小分别进行了排序,在此基础上对2002年、2005年浙江省产业进行关联比较分析,由此发现浙江省2002、2005年主导产业部门绝大多数属于装备制造业部门,能源、原材料等基础产业部门对经济制约显著,而第三产业发育不足。为调整浙江省产业结构提出合理建议。     

管理团队认知能力、行为整合对决策效果的影响机制研究

现有文献在研究团队决策效果的影响因素时,大部分关注年龄、学历等因素,较少关注非人口统计学特征。根据现有研究结果构建团队认知能力与决策效果的关系模型,利用结构方程模型进行实证研究并指出:团队认知能力的两要素能提升团队决策效果;团队行为整合被看作是团队运作过程的核心,对决策效果产生一定的正向作用,即团队的行为整合程度越高,其决策效果越好;验证行为整合在团队认知能力与决策效果之间具有中介作用。旨为丰富高阶理论、揭示认知能力对决策效果的作用提供借鉴。