Authoritative parenting and sensation seeking as predictors of adolescent cigarette and marijuana use

Adolescents with high sensation-seeking tendencies often seek out thrill seeking experiences to satisfy their need for stimulation and sensation. In many cases, sensation-seeking adolescents fulfill their need for stimulation and sensation by using illicit substances. However, not all high sensation seekers use drugs, although the factors that prevent or buffer sensation seeking remain unexplored. This study fills this gap in extant research by examining the role of authoritative parenting as a protective factor that prevents or buffers cigarette and marijuana use by adolescents with high sensation-seeking tendencies. Data from 1461 adolescents attending 6th through 8th grades in central Colorado were gathered during a semester-long classroom-based intervention to prevent the onset or further use of cigarettes. Results indicate that authoritative parenting moderated the effect of sensation seeking on adolescent marijuana attitudes, intentions, and peer influence but not behaviors. Further, authoritative parenting was a stronger influence than sensation seeking on cigarette-related outcomes with just the opposite effect observed for marijuana-related outcomes.     

The personal protective behaviors of college student drinkers: evidence of indigenous protective norms

Given the prevalence of alcohol consumption and the relative infrequency of harm among college students, the authors sought to determine how most college students protect themselves from alcohol-related harm. An analysis of the aggregate National College Health Assessment data identified a cluster of personal protective behaviors that correlated with reduced risk when drinking. Further analysis revealed that nearly three-quarters of student drinkers regularly employ at least 1 protective behavior, and well over half of the students who use protective behaviors routinely employ 2 or more. In addition, the data reveal that student drinkers employ situational abstinence, with nearly 7 out of 10 students reporting that they sometimes or usually refrain from drinking alcohol when they socialize. The use of these protective behaviors is a strong predictor of safety and harm for college-student drinkers.     

From probation to prevention: protecting college students and workers from animal hazards

OBJECTIVE: Our objective was to develop an organized system to assess individual and group exposure to animal hazards on a college campus. MAIN POINTS: The scope and complexity of college health services continue to expand as campuses confront unforeseen exposures and disease entities. Of great concern are students and faculty who are exposed to potentially life threatening and other serious conditions during their academic work. CONCLUSION: A college health service developed an effective animal-hazard surveillance questionnaire that could be scanned and analyzed for individual and group exposure to hazards and the presence or absence of protective measures. The college then provided appropriate preventive services.     

Household expenditure patterns and resource pooling: evidence of changes in post-apartheid South Africa

The primary aim of this paper is to examine whether resources accruing to different members of the household and from different sources have differential impacts on household expenditure patterns. The issue is of considerable policy interest for, if the identity of the income recipient does matter in the household’s expenditure decisions, then it indicates the usefulness of targeting income assistance at particular members of the household. The South African evidence is generally supportive of the hypothesis of resource pooling by the income earners in their spending decisions on food, clothing and energy. The results of this paper have been placed in the wider context of social, political and economic developments following the end of apartheid that have caused significant changes in the nature of resource inflow and in the balance of power in decision making within the South African household. The results are indicative of improvements in the standard of living of the majority of South Africans following the end of apartheid.

The invisible body of queer youth: identity and health in the margins of lesbian and trans communities

How does complexity in gender and sexual identity construction and partnering practices generate unique vulnerabilities for queer-identified youth? We present two case studies from an ongoing ethnographic study of LGBTQ youth development: "Samantha," a queer-identified woman partnered with a transgender man, and "Reid," a queer-identified transgender man who has declined medical gender transitioning and who partners with lesbians and gay men. We consider the implications of these youths' locations on the margins of both lesbian and transgender communities and the challenges in providing health care and support services for queer-identified youth.     

Open Basic Science Needed for Significant and Fundamental Discoveries

Basic science is about new things.A fundamental principle for basic science is luck.I have been very,very lucky throughout my life.Early on,I got to work with some of the most outstanding scientists globally,including British scientists in Cambridge,people like Francis Crick,John Kendrew,and Max Perutz.These are the scientists who redefined life as physics and chemistry in the 50s and 60s of the 20th century.     

Elderly African Americans as intragenerational caregivers

A growing number of older Americans serve as caregiving resources for their elderly spouses, partners, relatives, and/or friends. Yet, little research has addressed the impact and implications of this trend among African Americans. This article describes the results of a qualitative study examining the intragenerational caregiving experiences and perspectives of two cohorts of African Americans (urban and rural, N = 129) between the ages of 58 and 89. Its findings reveal important differences and commonalities associated with elderly African American caregivers and their care giving in urban and rural settings. Additionally, the study suggests that volunteer caregivers can often fill the void left by partners and relatives who predecease or fail to assume responsibility for the care of their elderly relatives. Their efforts do not displace those of friends and family members, but rather address unmet needs in available care. The discussion focuses on the implications of the study findings for public policy and practice.     

Nonparametric empirical Bayes for the Dirichlet process mixture model

The Dirichlet process prior allows flexible nonparametric mixture modeling. The number of mixture components is not specified in advance and can grow as new data arrive. However, analyses based on the Dirichlet process prior are sensitive to the choice of the parameters, including an infinite-dimensional distributional parameter G ₀. Most previous applications have either fixed G ₀ as a member of a parametric family or treated G ₀ in a Bayesian fashion, using parametric prior specifications. In contrast, we have developed an adaptive nonparametric method for constructing smooth estimates of G ₀. We combine this method with a technique for estimating α, the other Dirichlet process parameter, that is inspired by an existing characterization of its maximum-likelihood estimator. Together, these estimation procedures yield a flexible empirical Bayes treatment of Dirichlet process mixtures. Such a treatment is useful in situations where smooth point estimates of G ₀ are of intrinsic interest, or where the structure of G ₀ cannot be conveniently modeled with the usual parametric prior families. Analysis of simulated and real-world datasets illustrates the robustness of this approach.