Comparison of Temperament and Character Between Early- and Late-Onset Korean Male Pathological Gamblers

Purposes  

We investigated differences in temperament and character between early and late onset Korean pathological gamblers to identify whether the age of onset of pathological gambling (PG) could discriminate PG subtypes, like in alcoholism.     

Strategies for urban conservation: A case example of George Town, Penang

George Town, Penang has more than 200 years of urban history and the largest collection of heritage shophouses in Southeast Asia. These heritage buildings have remained unchanged since the 1800s in spite of the lack of conservation legislation. The objective of this paper is to determine which public policy instruments have been effective in protecting the urban heritage of George Town. In particular, the role played by the Control of Rent Act, 1966, is evaluated. Upon examination of records on property transaction, rent-control records, development applications and demographic trends, no conclusive evidence was found that this Act was instrumental in protecting heritage buildings. Instead it was the unintentional effects of various development policies that saved George Town's urban heritage.     

Effects of Accurate and Inaccurate Feedback on Work Performance: The Role of the Awareness of Inaccuracy

ABSTRACT

This study compared the effects of accurate (i.e., contingent) and inaccurate (i.e., non-contingent) feedback on work performance under two different work conditions. Under one work condition, participants could clearly see the outcome of their performance (i.e., visible condition). Under the other condition, they could not clearly see the outcome of their performance (i.e., non-visible condition). One hundred and twenty participants were randomly assigned to four experimental conditions (i.e., accurate/visible, inaccurate/visible, accurate/non-visible, and inaccurate/non-visible) and asked to perform a simulated work task. The results indicated that inaccurate feedback was as effective as accurate feedback under the non-visible condition, but inaccurate feedback was less effective than accurate feedback under the visible condition.     

Examining the impact of gender, race/ethnicity, and family factors on mental health issues in a sample of court-involved youth

Faced with anywhere between one half and two thirds of its youth having a diagnosable mental illness, the identification and treatment of mental health concerns is a critically important endeavor for professionals working with youth who have contact with the juvenile justice system. In addition, the literature suggests that factors related to both the family and to the gender of the adolescent must be incorporated into any approach to assessment and intervention within this special population. Further, prior work that has documented the interaction of gender and family issues with adolescent race/ethnicity warrants further empirical attention, as does the intermediary role that the family may play in the development of both internalizing and externalizing behaviors. The present study extends this literature by examining factors related to gender, race/ethnicity, family factors, and mental health issues in a sample of 2,549 Caucasian and African American youth coming to the attention of juvenile courts. Multivariate analysis of variance results indicated significant main effects for gender and race/ethnicity, as well as a significant gender x race/ethnicity interaction for the family and externalizing variables. A multiple group structural equation modeling procedure was employed in order to test the hypothesis that family environment mediates the relationship between gender and mental health problems, as well as to test for potential differences in these relationships as a function of race/ethnicity. Results indicated support for the mediation model in the sample of African American youth but not in the sample of Caucasian youth.     

An iterative sparse algorithm for the penalized maximum likelihood estimator in mixed effects model

In this paper, we propose a new iterative sparse algorithm (ISA) to compute the maximum likelihood estimator (MLE) or penalized MLE of the mixed effects model. The sparse approximation based on the arrow-head (A-H) matrix is one solution which is popularly used in practice. The A-H method provides an easy computation of the inverse of the Hessian matrix and is computationally efficient. However, it often has non-negligible error in approximating the inverse of the Hessian matrix and in the estimation. Unlike the A-H method, in the ISA, the sparse approximation is applied “iteratively” to reduce the approximation error at each Newton Raphson step. The advantages of the ISA over the exact and A-H method are illustrated using several synthetic and real examples.     

Accuracy of regularized D-rule for binary classification

We consider a regularized D-classification rule for high dimensional binary classification, which adapts the linear shrinkage estimator of a covariance matrix as an alternative to the sample covariance matrix in the D-classification rule (D-rule in short). We find an asymptotic expression for misclassification rate of the regularized D-rule, when the sample size $n$ and the dimension $p$ both increase and their ratio $p∕n$ approaches a positive constant $\gamma$. In addition, we compare its misclassification rate to the standard D-rule under various settings via simulation.     

Marriage and Women's Health in Japan

In this study, we evaluate alternative hypotheses about the potentially harmful or beneficial effects of marriage on women's health and examine the factors underlying observed relationships between marriage and health. Using data from the Japanese Panel Survey of Consumers, an annual survey of a nationally representative sample of Japanese women (N = 1,610), our study advances current scholarship on marriage and health by focusing on a context characterized by a high degree of gender inequality. Results from models employing different approaches to the potential role of health‐related selection into marriage consistently indicate that marriage is associated with better mental and physical health and that the lower levels of employment among married women play an important role in explaining this relationship. Our findings highlight the importance of considering how the specific pathways linking marriage and health may vary across societies with different gender and institutional contexts.     

Academic Underachievement and Recovery: Student Perspectives on Effective Career Interventions

Academic achievement has a significant influence on various career development and decision‐making factors. Therefore, it is important for career counselors to understand how past academic underachievement affects students’ current lives and to develop interventions that might ameliorate negative effects. This study examined the experiences of 9 ethnically diverse college students who had experienced and overcome academic failure. Data were collected by individual interviews and analyzed based on the consensual qualitative research method. Four themes emerged in relation to participants’ academic underachievement and recovery: attitude, study strategies, external support, and coping difficulties. The results suggest that underachieving students are better able to cope with and overcome academic difficulties when they set clear career goals, use effective learning strategies, consciously put forth more effort, and receive external support.     

What Behaviors Do Young Heterosexual Australians See in Pornography? A Cross-Sectional Study

This study investigated how frequently a group of young heterosexual Australians (ages 15 to 29) saw a range of behaviors represented in pornography over the previous 12 months. Participants were recruited to an anonymous online survey. Those who reported having viewed pornography in the past 12 months (n = 517) indicated how frequently they saw each of a list of 17 behaviors when they watched pornography in the past 12 months. Men’s pleasure (83%) was seen frequently by the highest proportion of young people surveyed, followed by a man being portrayed as dominant (70%). Women were more likely to report frequently seeing violence toward a woman (p < 0.01). Men were more likely to report frequently seeing heterosexual anal sex (p < 0.01), ejaculation onto a woman’s face (p < 0.01), women portrayed as dominant (p < 0.01), a man being called names or slurs (p < 0.01), and violence toward a man that appears consensual (p < 0.01). Younger age was significantly associated with frequently seeing women’s pleasure (p < 0.05), violence toward women which appeared consensual, and all types of violence (p < 0.01). Older age was associated with frequently seeing men’s pleasure (p < 0.01) and heterosexual anal sex (p < 0.05). Our findings draw attention to the gendered ways that behaviors in pornography are seen and identified by young heterosexual audiences.     

Sample size increase during a survival trial when interim results are promising

This paper is to extend Mehta and Pocock (2011 Mehta, C.R., Pocock, S.J. (2011). Adaptive increase in sample size when interim results are promising: a practical guide with examples. Stat Med. 00(00):00–00. [Google Scholar]) to provide a way in doing sample size increase in survival trials. Sample space is divided by observed test statistic at interim into three zones: unfavorable, promising, and favorable, within which sample size (required number of events) has a proper increase if falling into the promising zone and otherwise remains unchanged. Simulations with scenarios in the presence/absence of censoring, with/without adaptation, and allowing fourfolds versus twofolds of increase in sample size are compared.