Youth violence in South Africa: exposure, attitudes, and resilience in Zulu adolescents

Exposure to violence is common in South Africa. Yet, few studies examine how violence exposure contributes to South African adolescents' participation in youth violence. The aims of this study were to examine effects of different violence exposures on violent attitudes and behavior, to test whether attitudes mediated effects of violence exposures on violent behavior, and to test whether adult involvement had protective or promotive effects. Questionnaires were administered to 424 Zulu adolescents in township high schools around Durban, South Africa. Structural equation modeling (SEM) was used to test associations among violence exposures and both violent attitudes and behavior. Victimization, witnessing violence, and friends' violent behavior contributed directly to violent behavior. Only family conflict and friends' violence influenced violent attitudes. Attitudes mediated effects of friends' violence on violent behavior. Multiple-group SEM indicated that adult involvement fit a protective model of resilience. These findings are discussed regarding their implications for prevention.     

Two separate effects of variance heterogeneity on the validity and power of significance tests of location

Heterogeneity of variances of treatment groups influences the validity and power of significance tests of location in two distinct ways. First, if sample sizes are unequal, the Type I error rate and power are depressed if a larger variance is associated with a larger sample size, and elevated if a larger variance is associated with a smaller sample size. This well-established effect, which occurs in t and F tests, and to a lesser degree in nonparametric rank tests, results from unequal contributions of pooled estimates of error variance in the computation of test statistics. It is observed in samples from normal distributions, as well as non-normal distributions of various shapes. Second, transformation of scores from skewed distributions with unequal variances to ranks produces differences in the means of the ranks assigned to the respective groups, even if the means of the initial groups are equal, and a subsequent inflation of Type I error rates and power. This effect occurs for all sample sizes, equal and unequal. For the t test, the discrepancy diminishes, and for the Wilcoxon–Mann–Whitney test, it becomes larger, as sample size increases. The Welch separate-variance t test overcomes the first effect but not the second. Because of interaction of these separate effects, the validity and power of both parametric and nonparametric tests performed on samples of any size from unknown distributions with possibly unequal variances can be distorted in unpredictable ways.     

Moving Toward a Holistic Conceptual Framework for Understanding Healthy Aging Among Gay Men

In the last four decades, we have witnessed vast and important transitions in the social, economic, political, and health contexts of the lived experiences of gay men in the United States. This dynamic period, as evidenced most prominently by the transition of the gay rights movement to a civil rights movement, has shifted the exploration of gay men’s health from one focusing primarily on HIV/AIDS into a mainstream consideration of the overall health and wellbeing of gay men. Against this backdrop, aging gay men in the United States constitute a growing population, for whom further investigations of health states and health-related disparities are warranted. In order to advance our understanding of the health and wellbeing of aging gay men, we outline here a multilevel, ecosocial conceptual framework that integrates salient environmental, social, psychosocial, and sociodeomgraphic factors into sets of macro-, meso-, and micro-level constructs that can be applied to comprehensively study health states and health care utilization in older gay men.     

The Prevalence and Types of Gambling Among Undocumented Mexican Immigrants in New York City

Objectives To examine the prevalence of gambling and types of gambling activities in a sample of undocumented Mexican immigrants. Design Non-probability cross-sectional design. Setting New York City. Sample The 431 respondents ranged in age from 18 to 80 (mean age 32), 69.7% were male. Results More than half (53.8%) reported gambling in their lifetime and of those most (43.9%) played scratch and win tickets or the lottery. In multivariate analyses men reported gambling more than women [2.13, 95% CI = (1.03, 4.38)]. The odds of gambling in their lifetime were higher among those reporting sending money to family or friends in the home country [2.65, 95% CI = 1.10, 6.38)], and those who reported 1–5 days as compared to no days of poor mental health in the past 30 days [2.44, 95% CI = 1.22, 4.89)]. Conversely, those who reported entering the U.S. to live after 1996 were less likely to report gambling [0.44, 95% CI = (0.22, 0.89)] as compared to those who had lived in the U.S. longer. Conclusion There is a need to further explore both the prevalence and the severity of gambling amongst the growing population of undocumented Mexican immigrants in the U.S.     

Adverse Health Experiences,Environmental Attitudes,and Pesticide Usage Behavior of Farm Operators

Water pollution from agricultural pesticides continues to be a public concern. Given that the use of such pesticides on the farm is largely governed by voluntary behavior, it is important to understand what drives farmer behavior. Health belief models in public health and social psychology argue that persons who have adverse health experiences are likely to undertake preventive behavior. An analogous hypothesis set was tested here: farmers who believe they have had adverse health experiences from pesticides are likely to have heightened concerns about pesticides and are more likely to take greater precautions in dealing with pesticides. This work is based on an original survey of a population of 2700 corn and soybean growers in Maryland, New York, and Pennsylvania using the U.S. Department of Agriculture data base. It was designed as a mail survey with telephone follow-up, and resulted in a 60 percent response rate. Farm operators report experiencing adverse health problems they believe are associated with pesticides that is equivalent to an incidence rate that is higher than the reported incidence of occupational pesticide poisonings, but similar to the reported incidence of all pesticide poisonings. Farmers who report experiencing such problems have more heightened concerns about water pollution from fertilizers and pesticides, and illness and injury from mixing, loading, and applying pesticides than farmers who have not experienced such problems. Farmers who report experiencing such problems also are more likely to report using alternative pest management practices than farmers who do not report having such problems. This implies that farmers who have had such experiences do care about the effects of application and do engage in alternative means of pest management, which at least involve the reduction in pesticide use.     

Celiac disease in North America: the disabling experience

Diagnosed as having celiac disease during my final year of undergraduate studies at McGill University, in the spring of 2005, my identity and lifestyle have undergone a transformative process. In this article I examine my experience of having celiac disease post-diagnosis, using the social model of disability framework. I examine the barriers that persons having celiac disease experience, both generally and personally. At the general level I explore the parallels between the experience of having celiac disease and the experience of being disabled: culturally, environmentally and financially. At the personal level I recount the emotional experience of being disabled.     

Does it or Doesn't it? Geographic Differences and the Costs of Living

Abstract The relative cost of living in rural areas has long been of interest to rural sociologists. Today, the popular perception is that rural prices are lower. This study examines geographic differences in the costs of living in Kentucky. The results indicate that, contrary to the popular perception, when prices of the same products and services were compared, there was no consistent pattern of lower prices in the rural counties. Furthermore, differences in the material conditions of rural living meant that there were additional costs that price comparisons alone did not capture.