An Empirical Model of Perceived Mortality Risks for Selected U.S. Arsenic Hot Spots

Researchers have long recognized that subjective perceptions of risk are better predictors of choices over risky outcomes than science‐based or experts’ assessments of risk. More recent work suggests that uncertainty about risks also plays a role in predicting choices and behavior. In this article, we develop and estimate a formal model for an individual's perceived health risks associated with arsenic contamination of his or her drinking water. The modeling approach treats risk as a random variable, with an estimable probability distribution whose variance reflects uncertainty. The model we estimate uses data collected from a survey given to a sample of people living in arsenic‐prone areas in the United States. The findings from this article support the fact that scientific information is essential to explaining the mortality rate perceived by the individuals, but uncertainty about the probability remains significant.     

A frailty model for (interval) censored family survival data,applied to the age at onset of non-physical problems

Family survival data can be used to estimate the degree of genetic and environmental contributions to the age at onset of a disease or of a specific event in life. The data can be modeled with a correlated frailty model in which the frailty variable accounts for the degree of kinship within the family. The heritability (degree of heredity) of the age at a specific event in life (or the onset of a disease) is usually defined as the proportion of variance of the survival age that is associated with genetic effects. If the survival age is (interval) censored, heritability as usually defined cannot be estimated. Instead, it is defined as the proportion of variance of the frailty associated with genetic effects. In this paper we describe a correlated frailty model to estimate the heritability and the degree of environmental effects on the age at which individuals contact a social worker for the first time and to test whether there is a difference between the survival functions of this age for twins and non-twins.     

“To be a business and to keep our humanity”

In recent years, the political nature of nonprofit funding has been well established, with research focusing on increased demands for accountability (Eikenberry and Kluver, 2004), difficulties in selecting accountability measures (Reed, Jones, and Irvine, 2005), and the shift from organizational mission that can occur while trying to adhere to funding requirements (Adcroft and Willis, 2005; Parsons and Broadbridge, 2004). This article examines the dynamics between a funder and the nonprofit organizations it funds within an evolving accountability process. Specifically, we use qualitative methods to examine the negotiations between the funder and the nonprofits. Both sides in the funding relationship face tensions as they attempt to work within the constraints of this specific funding regime while trying to maintain their focus on social justice outcomes.     

Methods for calculating stationary distribution in linear models of time series

The article deals with methods for computing the stationary marginal distribution in linear models of time series. Two approaches are described. First, an algorithm based on approximation of solution of the corresponding integral equation is briefly reviewed. Then, we study the limit behaviour of the partial sums c ₁ η₁+c ₂ η₂+···+c _n η _n where η _i are i.i.d. random variables and c _i real constants. We generalize procedure of Haiman (1998) [Haiman, G., 1998, Upper and lower bounds for the tail of the invariant distribution of some AR(1) processes. Asymptotic Methods in Probability and Statistics, 45, 723–730.] to an arbitrary causal linear process and relax the assumptions of his result significantly. This is achieved by investigating the properties of convolution of densities.     

On computer generation of gamma random variables by rejection and composition procedures 2

The paper presents various algorithms for generating gamma random variables, by combining rejection and composition procedures. Two efficient algorithms are given for the case when the parameter of the gamma distribution is 0<v<l. For the case vl, several algorithms are given but they (except one), work reliably only for small values of v. Results of some computer tests together with FORTRAN subroutines are also presented.     

A Social Problems Approach to Gerontology in Social Work Education

This paper proposes a social problems emphasis to gerontology in social work education which acknowledges the fact that the elderly are handicapped and discriminated against by social values, attitudes, and practices. The traditional integrative approach has been ineffective in educating and sensitizing students to problems and needs of the aged. The social problems emphasis is discussed as related to future manpower needs, enlightened social workers as citizens, and advocacy for the elderly. A proposal for schools is presented, with implications for practice, fieldwork settings, research, and classroom instruction.     

Who Benefits from Religion?

Many studies have documented the benefits of religious involvement. Indeed, highly religious people tend to be healthier, live longer, and have higher levels of subjective well-being. While religious involvement offers clear benefits to many, in this paper we explore whether it may also be detrimental to some. Specifically, we examine in detail the relation between religious involvement and subjective well-being. We first replicate prior findings showing a positive relation between religiosity and subjective well-being. However, our results also suggest that this relation may be more complex than previously thought. While fervent believers benefit from their involvement, those with weaker beliefs are actually less happy than those who do not ascribe to any religion—atheists and agnostics. These results may help explain why—in spite of the well-documented benefits of religion—an increasing number of people are abandoning their faith. As commitment wanes, religious involvement may become detrimental to well-being, and individuals may be better off seeking new affiliations.     

Immigrant fertility patterns and differentials in Australia, 1971–1976

In this paper the fertility patterns and differentials among various immigrant groups in Australia are examined. Official vital statistics for the period 1971–76 are used.

Fertility ratios standardized by age and marital status suggest that the overall fertility of foreign-born women was higher in both 1971 and 1976; however, some evidence -of convergence towards an ‘Australian’ norm was found.

Four distinct patterns of fertility were noted. In two of them, Arab and South European, marital fertility was substantially higher but non-marital fertility quite low. The North-West European pattern was closest to that of the native-born; however, in the East European pattern fertility was lowest. Component analysis showed that most of the differences between the total fertility rate of Australians and those of the other groups reflect the significantly higher marital fertility rates and proportions married among the foreign-born groups.     

Morality and Nuclear Energy: Perceptions of Risks and Benefits,Personal Norms,and Willingness to Take Action Related to Nuclear Energy

We examined factors underlying people's willingness to take action in favor of or against nuclear energy from a moral perspective. We conducted a questionnaire study among a sample of the Dutch population (N = 123). As expected, perceptions of risks and benefits were related to personal norms (PN), that is, feelings of moral obligation toward taking action in favor of or against nuclear energy. In turn, PN predicted willingness to take action. Furthermore, PN mediated the relationships between perceptions of risk and benefits and willingness to take action. In line with our hypothesis, beliefs about the risks and benefits of nuclear energy were less powerful in explaining PN for supporters compared to PN of opponents. Also, beliefs on risks and benefits and PN explained significantly more variance in willingness to take action of opponents than of supporters. Our results suggest that a moral framework is useful to explain willingness to take action in favor of and against nuclear energy, and that people are more likely to protest in favor of or against nuclear energy when PN are strong.