Accurate estimation for extra-Poisson variability assuming random effect models

In this study, the components of extra-Poisson variability are estimated assuming random effect models under a Bayesian approach. A standard existing methodology to estimate extra-Poisson variability assumes a negative binomial distribution. The obtained results show that using the proposed random effect model it is possible to get more accurate estimates for the extra-Poisson variability components when compared to the use of a negative binomial distribution where it is possible to estimate only one component of extra-Poisson variability. Some illustrative examples are introduced considering real data sets.     

数字经济对城乡居民收入差距影响研究——兼论城镇化的门槛效应

数字经济为缩小居民收入差距带来了新机遇,而“数字鸿沟”又可能引发新的贫富差距。研究数字经济对城乡居民收入差距的影响,对于认识和缩小差距,实现共同富裕具有重要意义。文章基于2011—2020年31个省域面板数据,通过构建静态、动态面板模型及门槛模型,分析数字经济对城乡居民收入差距的影响。研究发现:省域层面上,数字经济显著缩小城乡居民收入差距,且该影响具有单一门槛效应。在城镇化水平较低时,数字经济对城乡收入差距的影响不显著;当城镇化水平越过门槛值,数字经济水平显著影响城乡收入差距的缩小。异质性分析发现,我国南北地区呈现出不同的效应,北方省份城乡收入差距受数字经济水平影响较小,而南方较大。     

Does community social embeddedness promote generalized trust? An experimental test of the spillover effect

Despite the theoretical relevance attributed to the spillover effect, little empirical research has focused on testing its causal validity. Addressing this gap in the literature, I propose a novel experimental design to test if the overall density of social links in a community promotes trustworthy and trusting behaviors with absolute strangers. Controlling for social integration (i.e. the individual number of social connections), I found that density fosters higher levels of trust. In particular, results show that people in denser communities are more likely to trust their unknown fellow citizens, encouraging isolated subjects to engage with strangers. However, evidence did not support the idea that community social embeddedness causes an increase of trustworthiness, indicating that the spillover effect works only with respect to trust.     

Leader negative feedback-seeking and leader effectiveness in leader-subordinate relationships: The paradoxical role of subordinate expertise

From a motivational perspective of feedback-seeking behavior, we examined the mediating role of leaders' negative feedback-seeking from subordinates in the relationship between the quality of leader-member exchange (LMX) and subordinates' evaluation of leader effectiveness, along with the moderating role of subordinate expertise in the mediated relationship. Using 151 unique matched sets of leader and subordinate reports obtained from 5 large Korean companies, we found that the positive relationship between LMX and leader effectiveness was mediated by leaders' negative feedback-seeking. Additionally, the positive relationship between LMX and leader negative feedback-seeking was stronger when perceived subordinate expertise was lower. Lastly, the indirect effect of LMX on leader effectiveness through leader negative feedback-seeking was stronger when perceived subordinate expertise was lower. These findings were obtained after controlling for leaders' power distance and goal orientations that might influence their motives to seek or avoid feedback. Theoretical and practical implications are discussed.     

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。     

国际环湖赛事资源对青海民族地区的效应分析

本文借鉴事件研究方法,并以相关部门总结报告为依据,探讨了环湖赛对民族地区带来的经济效应和社会效应.     

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.     

通过深化体制改革建立扩大内需的长效机制

我国内需不足的根本原因是深层次的体制问题,具体表现在不合理的收入分配体制,政府公共服务支出占政府总支出的比重较低,国有企业借助行政垄断地位挤压中小企业的生存空间．也增加了居民的生活成本,城乡一体化改革进展缓慢。必须通过深化经济体制改革,加快推进收入分配体制改革,加快公共财政体制建设,逐步完善基本公共服务体系,鼓励扩大民间投资,深化国有企业体制改革,加快推进城乡一体化改革。     

我国统一货币政策调控的区域效应非对称性分析

由于人民币升值的压力和我国国际收支的双顺差,外国资产迅速扩张,外汇占款成了我国基础货币的主要投放渠道。由于各区域的经济对外开放程度存在差异,统一的货币政策在不同区域的效应可能存在差异。通过对我国2004年第1季度至2011年第2季度央行统一的货币政策操作在不同区域的政策效应的非对称性进行了理论分析和实证检验,认为对东中西部应分别采用不同的货币政策。