The impact of assisted housing developments on concentrated poverty

Abstract

The common wisdom is that assisted housing developments have both a direct and an indirect impact on concentrated poverty. The indirect effects are based on the notion that the negative stereotypes associated with such developments spill over into the surrounding neighborhoods, causing people who can leave to do so or avoid the neighborhood and leaving behind only the more disadvantaged segments of society. An increase in concentrated poverty in the neighborhood surrounding the development results. Prior studies, relying on aggregated data, are consistent with this thesis. The overwhelming majority of the statistical models in my study, however, found these relationships to be spurious. Once individual and macrolevel characteristics were controlled for, the relationships disappeared.

These findings imply that assisted housing developments will not typically contribute to concentration of poverty in surrounding neighborhoods and suggest that much of the negative reaction to assisted housing developments is unwarranted.     

Comment on Michael A. Stegman,Walter R. Davis,and Roberto Quercia's “The Earned Income Tax Credit as an instrument of housing policy”

Abstract

The article by Stegman, Davis, and Quercia is a careful, comprehensive analysis of the current impact of the Earned Income Tax Credit (EITC) on the housing cost burdens of working families. Its major proposal, a graduated supplement to the EITC to reflect housing costs, is compared with my broader concept of addressing severe cost burdens through supplements to major income support programs. Criticisms of my concept, chiefly administrative difficulties and incompatibility with the EITC benefit structure, are discussed.

My primary concerns are that Stegman, Davis, and Quercia's proposal does not sufficiently target families with severe housing costs and that the formula for calculating the additional benefit does not reflect diverse housing costs throughout the country and provides the smallest increases to the recipients with the lowest incomes. However, it is more important to generate discussion of the reality that “income policy IS housing policy” than to argue about details.     

车辆上脱落细胞STR检验

目的对汽车方向盘及变速杆把手上的皮肤脱落细胞进行STR检验研究。方法用EZ-tape采集车辆方向盘及变速杆上的脱落细胞,Chelex-100法与磁珠法结合提取DNA,延长保温时间。定量后调整PCR反应体系,适当增加PCR循环数,增加PCR产物量及延长进样时间进行电泳检测,使用GeneMapperIDV3.2软件进行STR分型。同时,对比使用多重置换扩增技术对提取的DNA进行全基因组扩增。结果对33份车辆方向盘和变速杆上脱落细胞的检测,其中19份检出全部基因座的基因分型结果,9份检出部分基因型,5份未检出DNA分型结果。而利用多重置换扩增技术未获得满意图谱。结论本研究建立的脱落细胞收集、DNA提取、PCR扩增及检测方法适合于车辆上脱落细胞的检验,其结果优于使用多重置换扩增技术获得的分型。     

车辆上脱落细胞STR检验

目的对汽车方向盘及变速杆把手上的皮肤脱落细胞进行STR检验研究。方法用EZ-tape采集车辆方向盘及变速杆上的脱落细胞,Chelex-100法与磁珠法结合提取DNA,延长保温时间。定量后调整PCR反应体系,适当增加PCR循环数,增加PCR产物量及延长进样时间进行电泳检测,使用GeneMapperIDV3.2软件进行STR分型。同时,对比使用多重置换扩增技术对提取的DNA进行全基因组扩增。结果对33份车辆方向盘和变速杆上脱落细胞的检测,其中19份检出全部基因座的基因分型结果,9份检出部分基因型,5份未检出DNA分型结果。而利用多重置换扩增技术未获得满意图谱。结论本研究建立的脱落细胞收集、DNA提取、PCR扩增及检测方法适合于车辆上脱落细胞的检验,其结果优于使用多重置换扩增技术获得的分型。     

论绑架罪的修正构成的解释与适用——兼评修正案对绑架罪的修改

刚刚通过的《中华人民共和国刑法修正案(七)》对于绑架罪进行了部分修正,增设了"情节较轻"的减轻构成规定,这虽然具有重要的意义,但是这一减轻构成的评价、理解与适用本身仍是问题。在对绑架罪的减轻构成从规定方式到下限选择作了评述之后,文章继而讨论了对于"情节较轻"的具体理解问题,特别指出在规定了绑架罪"情节较轻"的构成之后要避免的几种错误倾向。同时,修正案对于绑架罪的加重构成未作任何修改,这十分令人遗憾,而本着严格限制死刑适用的初衷,必须对于现有的加重构成进行严格的限制解释。总体而言,修正案对于绑架罪的修改虽有进步但不彻底,可谓是"半截子的革命"。     

The impact of low self-control and delinquent peer associations on bullying perpetration and victimization among South Korean adolescents: Time-concurrent,time-lagged,and latent growth curve modeling

This study examines the impact of low self-control and deviant peer affiliations on bullying perpetration and victimization in South Korea. Our sample is drawn from a five-wave, longitudinal study of 2,844 Korean adolescents (ages 11–15), compiled by the Korean Youth Panel Study. Theoretically driven models are tested using time-concurrent and time-lagged models to assess the time-ordered relationship between deviant peer affiliations and bullying perpetration and victimization, and latent growth curve models to assess developmental trajectories of bullying outcomes. Low self-control is incorporated as a time-invariant construct, and deviant peer affiliations is incorporated as a time-varying construct. The impact of covariates drawn from the mixed model is slightly different for bullying perpetrators and victims. The time-concurrent effect of deviant peer associations is stronger than the time-lagged effect on both bullying perpetration and victimization. Deviant peer affiliations fully mediate the link between low self-control and only bullying victimization in a full model.     

儿童自我控制发展特点及其制约因素探讨

Hoffman与韩进之从不同角度对儿童自我控制进行了研究,本文试图对他们的研究作一番比较与分析,并在此基础上论述儿童自我控制发展特点及认知发展、情感、父母教养方式等因素对儿童自我控制的影响。     

Low self-control and imprudent behavior

Gottfredson and Hirschi'sA General Theory of Crime contends that individual differences in involvement in criminal and analogous behavior are due largely to individual differences in the personality trait they call low self-control. Among the various behaviors considered analogous to crime are imprudent behaviors such as smoking, drinking, and gambling. This research explores the generality of Gottfredson and Hirschi's theory by examining the link between low self-control and these imprudent behaviors. The results are mixed. In support of the theory, the data reveal a modest but significant effect of a scale designed to capture the various components of low self-control on an index of imprudent behavior. A more detailed analysis, however, reveals that some of the components of low self-control, specifically those probably linked to low intelligence, detract from the scale's predictive power. In fact, one of the components, risk-seeking, is more predictive than the more inclusive scale. Furthermore, one of the imprudent acts, smoking, appears to be unaffected by low self-control. These contradictory findings suggest the need for theoretical refinements.