Inequality, Wealth and Health: Is Decreasing Income Inequality the Key to Create Healthier Societies?

The idea that the level of stratification of societies contributes to the well-being of their members is gaining popularity. We contribute to this debate by investigating whether reducing inequalities in the income distribution of societies is a strategy for improving population health, especially appropriate for those countries that have reached the limits of economic growth. We test this idea on a dataset covering 140 countries and 2360 country-year observation between 1987 and 2008 and formulate hypotheses separately for countries with different level of economic development. We indeed found that countries with higher levels of income inequality also have lower levels of life expectancy (our measure of population health), and this result was consistent both in cross-sectional and longitudinal analyses. However, the relationship was found only among low- and middle-developed countries. In the group of high-developed countries, the relationship between income inequality and life expectancy was non-significant, which contradicts the literature. Expectations on the relationship between a country’s wealth and health were confirmed: economic growth does contribute to improving population health, but this effect is weaker in more economically developed countries. These results imply that a decrease in a country’s income inequality parallel with an increase in its wealth can help to improve health in economically lesser-developed countries, but not in high-developed countries.     

Transcending apartheid in higher education: transforming an institutional culture

Twenty years after Nelson Mandela became President of South Africa, deeply entrenched inequalities and injustices are still at the core of the country’s social fabric. South Africa’s public and private sectors continue to battle with the situation and higher education institutions are no exception. The South African Ministry of Education has identified systemic problems within the institutional cultures of universities as one of the key obstacles to change. This article focuses on a racist incident that occurred at the University of the Free State (UFS) in South Africa in 2007. The incident shook the university’s institutional culture to the core and became a catalyst for change for universities across the country. We portray the institutional culture of the UFS on the basis of a series of interviews with management and student leaders who personally played key roles in handling the incident in 2008. The interviews reveal some of the ‘story stock’ within the institutional culture and highlight four interrelated dimensions of contestation. The stories also show that the interviewees frequently situate and justify their beliefs and actions in an intergenerational chain. Finally we consider some of the implications of our findings for the ongoing reconstruction of post-apartheid institutional cultures in higher education.     

To see ourselves as others see us: identity and attitudes towards immigration amongst civic nationalists

ABSTRACT

This article examines how different conceptions of national identity can be linked to attitudes towards cultural pluralism. The tensions between more culturally pluralistic societies and sustained support for nationalism represent an important political issue in modern western European politics. Such tensions are of particular relevance for stateless nationalist and regionalist parties (SNRPs) for whom national/regional identity is a major political driver. This article empirically tests the relationship between different conceptions of national identity and attitudes towards cultural pluralism in two SNRPs—the Scottish National Party and the Frisian National Party. The article draws upon evidence from two unique full party membership studies and is supported with evidence from documentary analysis. A key finding is that the manner in which members conceptualise national identity has significant implications for their attitudes towards cultural pluralism, which has the potential of becoming a source of tension within SNRPs. A key implication of the article is that there is evidence that attitudes of general members and officially stated party positions and narratives diverge on issues relating to cultural pluralism and national identity. These tensions could potentially be harmful for the party's overall civic image.     

Quantifying Water Pathogen Risk in an Epidemiological Framework

Traditionally, microbial risk assessors have used point estimates to evaluate the probability that an individual will become infected. We developed a quantitative approach that shifts the risk characterization perspective from point estimate to distributional estimate, and from individual to population. To this end, we first designed and implemented a dynamic model that tracks traditional epidemiological variables such as the number of susceptible, infected, diseased, and immune, and environmental variables such as pathogen density. Second, we used a simulation methodology that explicitly acknowledges the uncertainty and variability associated with the data. Specifically, the approach consists of assigning probability distributions to each parameter, sampling from these distributions for Monte Carlo simulations, and using a binary classification to assess the output of each simulation. A case study is presented that explores the uncertainties in assessing the risk of giardiasis when swimming in a recreational impoundment using reclaimed water. Using literature-based information to assign parameters ranges, our analysis demonstrated that the parameter describing the shedding of pathogens by infected swimmers was the factor that contributed most to the uncertainty in risk. The importance of other parameters was dependent on reducing the a priori range of this shedding parameter. By constraining the shedding parameter to its lower subrange, treatment efficiency was the parameter most important in predicting whether a simulation resulted in prevalences above or below non outbreak levels. Whereas parameters associated with human exposure were important when the shedding parameter was constrained to a higher subrange. This Monte Carlo simulation technique identified conditions in which outbreaks and/or nonoutbreaks are likely and identified the parameters that most contributed to the uncertainty associated with a risk prediction.     

Modifications of the Mack-Wolfe umbrella tests for a generalized Behrens-Fisher problem

We are concerned with testing procedures for umbrella alternatives in the k-sample location problem without making the assumption that the underlying populations have the same shape. Modifications of the Mack-Wolfe tests are proposed for the cases when the peak of the umbrella is known or unknown. The proposed procedures are exactly distribution-free when the continuous populations have the same shape. The modified test for peak-known umbrella alternatives remains asymptotically distribution-free when the continuous populations are symmetric, but not necessarily with the same shape.     

Comparison of experiments for a class of positively dependent random variables

Using Blackwell's definition for comparison of experiments, it is shown that some sets of positively dependent random variables are less informative than similar sets of independent random variables. It is also shown that the information content of symmetric multivariate normal random vectors with a common known variance increases as the common correlation coefficient decreases. Some results which compare members of two-parameter exponential families are also included.     

What inhibits the mere-exposure effect: Recollection or familiarity?

The mere-exposure effect is the formation of a positive affective reaction (PAR) to repeated or single exposure to a stimulus, even in the absence of awareness. The mere-exposure effect indicates that communication effects go beyond “explicit memory”, measured with the traditional measures of (aided) recall and recognition. “Implicit memory” indicates latent communication effects, e.g., liking, for persons exposed to particular stimuli. The mere-exposure effect in the absence of awareness represents implicit memory. In this study, the mere-exposure effect is observed by using a new type of divided-attention method with Chinese participants responding to Chinese characters. The prediction by the two-factor model of mere-exposure effect is confirmed. Recognition (“explicit memory”) may inhibit the mere-exposure effect. Recognition memory is a dual process with two aspects: recollection and familiarity. Employing the process dissociation procedure (PDP) (Jacoby, L.L., 1991. Journal of Memory and Language 30, 513–541), it is found that familiarity of above-chance recognition is greater than that of chance recognition. It is the high level of familiarity and not recollection of abovechance recognition that inhibits the mere-exposure effect. The implications of these findings are that a high level of familiarity inhibits the primary affective reaction and “replaces” this reaction with a more conscious and cognitive evaluation. With the two-factor model, with wear-in (habituation) and wear-out (satiation) factors, the optimal level of exposure may be determined in order to increase the affective reaction. The study shows the robustness of the mere-exposure effect, also for familiar stimuli.