Assessing comprehension in a survey of public reactions to complex issues

This paper reports results of research to develop householdinterview procedures for obtaining reasonably informed publicjudgments about ethical issues in biomedical research. We describe(1) an interviewing strategy designed to enhance comprehensionamong survey respondents, and (2) a composite comprehensionindex based on three types of information from the interview.Using data from a cross-section sample, we identify subgroupsthat differ significantly with respect to scores on the comprehensionindex, and we then describe the observed levels of comprehensionin terms of the operations defining the index. The results demonstraleboth the feasibility and limits of obtaining informed ratherthan naive judgments about complex issues from lay respondents.     

Toward a Dialectical Model of Family Gender Discourse: Body,Identity, and Sexuality

The goal of this article is to propose a dialectical model representing gender discourse in families. A brief review of literature in sociology, psychology, and gender studies focuses on three dialectical issues: nature versus culture, similarity versus difference, and stability versus fluidity. Deconstructing gender theories from a postmodern feminist perspective, the authors discuss agency and context in families' gender discourse. Narrative excerpts from interviews with an adolescent daughter and her mother illustrate three emergent themes in the social construction of gender: body, identity, and sexuality. The article concludes with recommendations for family researchers.     

Causality Assessment of the Acute Health Complaints Reported in Association with Oxygenated Fuels

In some areas where oxygenated fuel programs have been implemented, there have been widespread complaints of non-specific health effects attributed to the gasoline. There are a number of hypotheses that can account for this apparent association. This paper examines the hypothesis that the use of oxy-fuel (either oxygenated gasoline or reformulated gasoline) results in exposure of the general population to one or more chemicals at concentrations that cause toxicologic injury. Although several oxygenates can be used in oxy-fuels, this analysis focuses on MTBE because it is the most widely used oxygenate and because the database of relevant toxicologic data is greatest for this oxygenate. The causal assessment is based on an evaluation of the qualitative and quantitative plausibility that oxygenated fuel-related exposures have toxicological effects, and the epidemiologic studies that directly test the hypothesis that the use of oxygenated fuels causes adverse health effects. The plausibility that chemical exposures related to oxy-fuel use cause toxicological effects is very low. This determination is based on consideration of the exposure-response and time-action profiles for relevant toxicological effects of MTBE in animals, experimental MTBE exposure studies in humans, and the possibility that the addition of MTBE to gasoline results in toxicologically significant qualitative and/or quantitative changes in gasoline-related exposures. Similarly, the epidemiologic studies of oxy-fuel exposed cohorts do not support a causal relationship between oxy-fuel use and adverse health effects. Although the data are insufficient to rule the possibility of unique sensitivity in a small segment of the population, the strength of the evidence and the availability of other more plausible explanations for the health complaints reported in association with oxy-fuels support a high degree of confidence in the conclusion that MTBE-containing oxygenated fuels are not the cause of acute toxicity in the general population.