Making Sense of Community Action and Voluntary Participation—A Multilevel Test of Multilevel Hypotheses: Do Communities Act?

To what extent does community context influence individuals’ proclivity to participate in community‐oriented activities and projects? In this article we utilize survey data from residents of 99 Iowa communities to conduct a multilevel analysis of voluntary participation and community action, simultaneously addressing voluntary participation at the individual level and “community action” at the community level. Additionally, we test the suggestion that community attachment may constitute a unique form of social capital. The robustness of these data allows us to overcome the obstacles that have led to the conflation of individual‐ and community‐level attributes in many community studies. We show that community attachment and community‐oriented action are determined almost entirely by individuals’ characteristics rather than by the characteristics of communities, and thus do not constitute community‐level phenomena, calling into question the assumptions on which certain theoretical approaches to community are based.     

The Rheumatoid Arthritis Drug Development Model: a case study in Bayesian clinical trial simulation

The development of a new drug is a major undertaking and it is important to consider carefully the key decisions in the development process. Decisions are made in the presence of uncertainty and outcomes such as the probability of successful drug registration depend on the clinical development programmme. The Rheumatoid Arthritis Drug Development Model was developed to support key decisions for drugs in development for the treatment of rheumatoid arthritis. It is configured to simulate Phase 2b and 3 trials based on the efficacy of new drugs at the end of Phase 2a, evidence about the efficacy of existing treatments, and expert opinion regarding key safety criteria. The model evaluates the performance of different development programmes with respect to the duration of disease of the target population, Phase 2b and 3 sample sizes, the dose(s) of the experimental treatment, the choice of comparator, the duration of the Phase 2b clinical trial, the primary efficacy outcome and decision criteria for successfully passing Phases 2b and 3. It uses Bayesian clinical trial simulation to calculate the probability of successful drug registration based on the uncertainty about parameters of interest, thereby providing a more realistic assessment of the likely outcomes of individual trials and sequences of trials for the purpose of decision making. In this case study, the results show that, depending on the trial design, the new treatment has assurances of successful drug registration in the range 0.044–0.142 for an ACR20 outcome and 0.057–0.213 for an ACR50 outcome. Copyright © 2009 John Wiley & Sons, Ltd.     

Paternal involvement with adolescents in intact families: The influence of fathers over the life course

We measure the quality and quantity of fathers’ involvement with adolescent children in intact families over time using longitudinal data from The National Survey of Children. We examine differentials in fathers’ involvement by children’s and family characteristics and model the long-term effects of fathers’ involvement on children’s outcomes in the transition to adulthood. Fathers are more involved with sons than with daughters and they disengage from adolescents with increasing marital conflict. We find beneficial effects for children of father’s involvement in three domains: educational and economic attainment, delinquent behavior, and psychological well-being. The course of affective relations throughout adolescence also has a beneficial effect on delinquent behavior and psychological well-being.     

COMPONENTS OF VARIANCE MODELS WITH TRANSFORMATIONS

Power transformations are a popular way to improve the agreement between the observations and the assumptions in a statistical model. In this paper it is assumed that the data, after appropriate power transformation Λ, satisfies a variance components model, with independent Gaussian components. The focus is on inference for quantities which have an interpretation regardless of the choice of Λ (Carroll & Ruppert, 1981) – in particular the intraclass correlation coefficient ρ, the predicted probability of a new observation being less than a specified value and the predicted quantile. It is shown that, in the case Λ= 0, the asymptotic variance of ρ is the same, whether or not one treats Δ as estimated or as known. This supports an empirical conjecture of Solomon (1985). For predicted probabilities and predicted quantiles the variance when A is estimated is shown to be only slightly greater than the variance assuming Δ is known, except in the tails of the distribution where there can be substantial difference between the two variances.     

Social Protection and Health: Experiences in Uganda

There is an interesting and continuing debate on the nature and role of social protection in poverty reduction. Within the health sector, discussion has focussed on the drawbacks associated with fee exemption schemes and community‐based health insurance, with much less attention paid to the policy option of abolishing user fees. This paper reviews empirical evidence on the impact of the Government of Uganda's decision in 2001 to abolish user fees for health services. The paper finds that this policy intervention has had a significant positive impact on health‐seeking behaviour in Uganda and concludes that this policy measure can make an important contribution towards a more ‘promotional’ policy approach to social protection.     

Book reviews

The Skewed Revolution: Trends in South African Higher Education 1988–1998. By David Cooper and George Subotzky. Cape Town: Education Policy Unit of the University of the Western Cape. 2001. 284 pages. Paperback

Africanizing Anthropology: Fieldwork, Networks and the Making of Cultural Knowledge in Central Africa. By Lyn Schumaker. Durham, NC: Duke University Press. 2001. 376 & xii pages.

On the Postcolony By Achille Mbembe. Berkeley, CA: University of California Press. 2001. 274pp. Paperback.

Fighting Poverty: Labour Markets and Inequality in South African Studies. By Haroon Bhorat, Murray Leibbrandt, Muzi Maziya, Servaas van der Berg and Ingrid Woolard. Cape Town: University of Cape Town Press. 2001. 252 pages.     

Investigating Race,Class and Context through Historical Evidence: Segregation and the Ecology of Aspirations of Black College Students in the 1960s South

In an era of re-segregation among school systems in the United States, we find ourselves revisiting times of forced school segregation (pre Brown v. Board) for a better understanding of explanations and potential consequences. One consequence, depressed aspirations for occupational mobility, is examined here. Using data for Mathews and Prothro's Negro Participation Survey, administered to black college students in 1961, we examine this relationship while controlling for various individual level indicators of capital, demographics, political participation, and ecologically-centered organizational and economic factors through the use of Hierarchical Linear Modeling (HLM). We uncover patterns of aspirations (or lack thereof) concerning social class mobility that are directly related to social class background and the cultural orientations of the environment in which the student hails. Our conclusions link such patterns to the current trajectory of re-segregation in the education system.