Direct and Moderating Effects of Social Affordances on School Involvement and Delinquency Among Young Adolescents

Using social control theory and attachment theory as guides, this study examined how qualities of young adolescents' social relationships (i.e., mother, sibling, and friend) and dynamic interactions among characteristics of those relationships are associated with school involvement and delinquency. The participants included older siblings (M age=14.3), younger siblings (M age=11.6), and their mothers from 434 families who completed web‐based surveys. Results were largely consistent with tenets of social control theory and attachment theory. Young adolescents' social relationships mostly worked in additive ways, but sometimes in compensatory ways for older siblings, to promote positive adjustment. The results suggest that young adolescents' social relationships may be differently associated with adjustment depending on birth order or developmental stage.     

Women in the middle: generational position and grandmothers' adjustment to raising grandchildren

This study compared the adjustment of two groups of grandmothers who were providing primary care for grandchildren in split-generation households: 25 grandmothers in the oldest generation of their families (G1), and 22 grandmothers who had living parents or in-laws (G2). It was hypothesized that because of potential demands on them as middle-generation women, G2 grandmothers would report greater burden and depression in their caregiving roles than G1 grandmothers. After controlling for numerous factors that are associated with generational position, the hypothesis was confirmed. In addition to being in the middle generation, having grandchildren with problems predicted elevated depression and burden. Grandmothers who were educated beyond high school also reported greater role burden.     

Divergence in the development of public health insurance in Japan and the Republic of Korea: A multiple‐payer versus a single‐payer system

Japan and the Republic of Korea achieved universal health insurance coverage for their populations in 1961 and 1989, respectively. At present, Japan continues to operate a multiple‐payer social health insurance system, while the Republic of Korea has moved to an integrated single‐payer national health insurance structure. This article analyzes the influence of political economy in shaping the policy divergence found between these two Bismarckian health insurance systems. Issues addressed include differences in political power, the policy influence of business, the extent to which regional autonomy has developed and regional traits have been preserved, the level of political democratization, the form of political leadership, and the scale of development of the health insurance system. The article offers policy lessons derived from the two countries' experiences.     

Perceived media bias and third person effect: Comparisons of Americans,Korean Americans,and Koreans in the United States

The current study examined the third person effect (TPE) in relation to media coverage of the shooting incident at Virginia Polytechnic Institute and State University (i.e., Virginia Tech.) in April of 2007. TPE refers to tendency to perceive that media coverage influences others (i.e., the third persons) to a greater extent than self (i.e., the first person). Three groups (non-Korean Americans, Korean Americans, and Koreans living in the United States) were compared with one another for their perceptions of media coverage. Specifically, this study investigated how much individuals perceived media to influence themselves versus the American public and the Korean American public. Additionally, the current study examined the extent to which individuals’ focus on the shooter and their perceptions of media bias were related to TPE. The results showed support for TPE in terms of media coverage resulting in negative feelings toward Korean Americans and Koreans. As individuals focused more on the shooter and also perceived greater media bias against Korean Americans, they thought that the media coverage of the incident would be more likely to influence the American public to have negative feelings about Koreans and Korean Americans.     

Three measures of non‐resident fathers' involvement,maternal parenting and child development in low‐income single‐mother families

This study examined the relationships among non‐resident fathers' involvement, mothers' parenting and parenting stress, and children's behavioural and cognitive development in low‐income single‐mother families. Based on the theoretical concepts of father involvement in terms of accessibility, responsibility and interaction, this study operationalizes fathers' involvement with three different measures: (i) fathers' frequency of contact with their children; (ii) fathers' amount of child support payment; and (iii) fathers' quality of parenting. Analyses used the first three waves of longitudinal data from a subsample of single and non‐cohabiting mothers with low income in the Fragile Families and Child Wellbeing Study. Results suggest that non‐resident fathers' child support payment is indirectly associated with both children's behaviour problems and cognitive development. Fathers' parenting is also found to be indirectly associated with children's behaviour problems. The findings further suggest that those estimated associations are transmitted through mothers' parenting. The expected associations between fathers' contact and child outcomes are not found in this sample. The study also discusses the policy and practice implications of its findings.     

Nonparametric estimation of value-at-risk

This paper develops a fully nonparametric method for estimating value-at-risk based on the adaptive volatility estimation and the nonparametric quantile estimation. The proposed method is simple, fast and easy to implement. We evaluated its numerical performance on the basis of Monte Carlo study for numerous models. We also provided an empirical application to KOrean Stock Price Index data, which turned out to be successful by backtesting.     

Censored quantile regression for residual lifetimes

We propose a regression method that studies covariate effects on the conditional quantiles of residual lifetimes at a certain followup time point. This can be particularly useful in cancer studies, where more patients survive cancers initially and a patient’s residual life expectancy is used to compare the efficacy of secondary or adjuvant therapies. The new method provides a consistent estimator that often exhibits smaller standard error in real and simulated examples, compared to the existing method of Jung et al. (2009). It also provides a simple empirical likelihood inference method that does not require estimating the covariance matrix of the estimator or resampling. We apply the new method to a breast cancer study (NSABP Protocol B-04, Fisher et al. (2002)) and estimate median residual lifetimes at various followup time points, adjusting for important prognostic factors.     

The Intertwined Relationship between Self‐esteem and Peer Stress Among Korean Adolescents: A Prospective Longitudinal Study

Although the association between self‐esteem and peer stress among adolescents is not unidirectional, and the two constructs probably coevolve and coexist over time, these two constructs and their possible mutual influence have rarely been tested in one single study. The present study examined whether there are bidirectional interactions between self‐esteem and perceptions of peer stress across five or six annual waves using a nationally representative sample of two cohorts of South Korean youth. The sample comprised 2844 fourth graders (M = 9.86 years) and 3449 eighth graders (M = 13.79 years) at wave 1. Findings suggested that self‐esteem was positively associated with peer stress in early and middle adolescence, whereas peer stress was negatively associated with self‐esteem in early adolescence, but had positive links in middle and late adolescence. The implications of the results were discussed.     

Career Compromise Types Among University Graduates During the School‐to‐Work Transition

Because of high youth unemployment caused by structural conditions, South Korean university graduates must compromise their employment preferences and instead accept whatever work is available. In this study, we classified the types of compromises using latent profile analysis to examine various factors involved in the career compromise of 472 recent university graduates during their school‐to‐work transition. We identified four types of compromise patterns with distinct characteristics and discovered that the university graduates who did not compromise their interest and aptitude in their job selection showed a higher level of commitment to their career compared with those who compromised. Results suggest that individuals who do not compromise their interests and aptitudes are more likely to have successful and fulfilling long‐term careers.