中国老年人储蓄对家庭消费的影响 ——基于CHARLS面板数据的分析

在我国快速老龄化和居民储蓄率居高不下的背景下,结合老年人储蓄偏好和消费特点,构建家庭消费计量分析模型,文章利用CHARLS2011、2013、2015年微观跟踪调查数据,采用工具变量—随机效应模型划分年龄层次和消费类别逐级估计,重点考察老年人储蓄对其家庭消费的影响。研究表明,老年人储蓄水平越高,对家庭消费的促进能力就越强;分城乡来看,农村老年人储蓄对家庭消费的贡献更大;按年龄组别来看,中、低龄老年人储蓄对家庭消费的影响显著,高龄老年人储蓄对家庭消费的影响不显著;按消费类别看,老年人储蓄偏重于家庭基本生活、教育文化、健康等刚性消费支出,城镇和农村老年人储蓄对不同消费类别影响的差异主要表现在日常支出、医疗保健和耐用消费品等方面。此外,研究还发现,老年人拥有房产对家庭消费具有非常明显的提振作用,家庭收入和老年人借贷对家庭消费的贡献显著。     

户籍类型与城乡居民医疗服务利用 ——基于Andersen模型的经验分析

本文利用中国社会科学院经济研究所2018年城乡居民入户调查数据,从户籍改革角度分析户口类型改变对城乡居民医疗服务利用的影响。研究发现:与户口类型未发生改变的城乡居民相比,户口类型发生过改变(农转非)的城乡居民门急诊服务利用的可能性更高,住院医疗服务支出水平更低。从户籍改革与参保类型交互效应看,相对于户口类型未发生过改变的居民医保参保人群,户口类型发生改变(农转非)会显著提高居民医保参保人群门急诊服务利用,同时降低其住院服务利用。进一步采用PSM方法进行稳健性检验,户籍改革对提高城乡居民门急诊服务利用,降低住院医疗服务利用的结论依然成立。此外,本文还发现,直接结算提高了城乡居民门急诊和住院的就诊概率;健康自评状况越差,门急诊和住院医疗服务利用可能性越高,门急诊医疗支出、住院医疗支出和跨省异地就医支出也越高。本文认为,相对于推行基层分级诊疗制度,以户籍改革推动农村居民自由流入医疗资源更丰富的城镇地区,改革基层卫生院制度,以及改变基层医疗服务提供激励机制,可能更有助于改善农村居民健康状况。     

The 2015 welfare reform of the National Basic Livelihood Security System in South Korea: Effects on economic outcomes

In July 2015, South Korea’s National Basic Livelihood Security System (NBLSS) was reformed for the purposes of eliminating welfare blind spots and reducing poverty. The reform is expected to affect the recipients’ economic behaviours and choices. In this study, we used changes in benefits and eligibility for the NBLSS under the customised benefit system to identify the effects of the change in the NBLSS on a proposed set of economic outcomes – income, labour supply, consumption, savings, poverty reduction. To estimate the effects, we used data from the 10th–12th waves of the Korea Welfare Panel Study and employed a difference‐in‐differences framework integrated with the propensity scores. We found that the NBLSS helps the poor to reduce financial and material hardships through income and consumption increments, but that it does not provide disincentives to the recipients from participating in the labour market or from saving.     

Gender differences in risk behavior and the link to household effects and individual wealth

This study examined the differences in risk behavior between men and women using a household survey that captured the risk preferences of two members in a household and recorded wealth at the individual level instead of the usual approach of representing wealth at the household level. After controlling for commonly used explanatory variables, such as gender, education, age, and wealth, household fixed effects explain about 15% of the variation in risk behavior. This highlights the magnitude of household effects in shaping one’s risk behavior. In general, females in the study area are more risk averse than males based on a risk game with real payout. The gender differences disappear when focusing on only the top land owners. However, even in those cases, females consider themselves more risk averse, supporting results from previous studies that link culture and societal norms to the gender differences in risk behavior.     

Toward an integrated Bayesian network approach to measurement error detection and correction

In this article, the quality of data produced by national statistical institutes and by governmental institutions is considered. In particular, the problem of measurement error is analyzed and an integrated Bayesian network decision support system based on non-parametric Bayesian networks is proposed for its detection and correction. Non-parametric Bayesian networks are graphical models expressing dependence structure via bivariate copulas associated to the edges of the graph. The network structure and the misreport probability are estimated using a validation sample. The Bayesian network model is proposed to decide: (i) which records have to be corrected; (ii) the kind and amount of correction to be adopted. The proposed correction procedure is applied to the Banca d’Italia Survey on Household Income and Wealth and, specifically, the bond amounts are analyzed. Finally, the sensitivity of the conditional distribution of the true value random variable given the observed one to different evidence configurations is studied.     

实现农民工市民化是解决农民工问题的根本途径

当前农民工问题的持续存在已经成为经济社会发展的重要障碍,既不利于整个宏观经济的稳定,也不利于发展以适度规模经营为目标的现代农业。而从就业、劳动权益、居住、户籍等方面给予进城农民平等的权利和待遇,全面实现农民工市民化,是解决农民工问题的根本途径。     

户籍制度改革与城市化进程

以计划经济为背景建立起来的中国户籍制度构筑了城市中国与乡土中国的分立壁垒.衍生在制度之上的各种特权与利益分配使得户籍制度改革错综复杂,也给城市化进程设置了重重障碍,延缓了城市化的推进;另一方面,城市化的滞后发展和城市公共资源的有限性,也构成了户籍制度改革的"瓶颈".     

中国城镇居民家庭储蓄水平队列效应分析

利用中国家庭收入调查（ CHIP）数据对城镇居民家庭的储蓄率进行了队列效应的实证研究。分析结果表明,属于不同队列的城镇家庭在储蓄水平上都呈现出相似的“U”型年龄分布,即中年家庭（40－50岁）储蓄率低,年轻家庭（20－40岁）和退休家庭储蓄率较高,这一现象与其他国家的实证研究结果有显著不同。本文认为,中国城镇居民储蓄率的“U”型年龄分布主要是由人口与经济的高速增长带来的：人口高速增长带来的队列规模效应使得面对更大竞争压力的年轻人口储蓄率较高,而经济水平持续增长带来的消费水平增长预期使得接近退休家庭储蓄水平重新上升。     

论风险投资民间筹资的可能性

以高科技为代表的知识经济的来临,呼唤风险投资。我国的风险投资方兴未艾,但风险资金主要来自于政府,非政府资金相对较少,由此造成我国风险资金的不足并日益成为我国科技成果转化为生产力的"瓶颈"。与此同时,我国居民储蓄余额每年却以30%的速度递增。对此,应借鉴国外实际运作经验,通过民间储蓄来筹集我国的风险资金,这就要求转变我国居民观念、培育筹资环境体系和确立合适的筹资模式,在这些方面,政府还有许多工作要做。     

农地制度变迁的机理与合约分析：生产队制和家庭联产承包责任制

家庭联产承包责任制在农业生产上的高能激励自农地制度变革以来一直被学界所推崇,但这并不意味着生产队制的低效率。为此,在否定以生产队制低效率作为农地制度变迁的解释的基础上,从发展战略转换、制度安排缺陷、农民信念及其他方面尝试性地探讨了推动生产队制向家庭联产承包责任制变迁的内在原因,并且从生产责任制形式、土地分配方式、期限结构等方面详细阐述了家庭联产承包责任制向农业产出最大化演化的过程。相应地,伴随着农地制度变迁而来的是签约主体以及合约结构的变动,因此,从合约的角度进一步研究了生产队制与家庭联产承包责任制在合约实施和劳动监督与计量上的差别,以及作为二者共同之处的合约模糊性特征,并在此基础上对家庭联产承包责任制下税费合约的性质与形式进行了具体的分析。