In this article I examine several criticisms of the concept of vulnerability. Rather than rejecting the concept, however, I argue that a sufficiently rich understanding of vulnerability is essential to bioethics. The challenges of international research in developing countries require an understanding of how new vulnerabilities arise from conditions of economic, social and political exclusion. A serious shortcoming of current conceptions of vulnerability in research ethics is the tendency to treat vulnerability as a label fixed on a particular subpopulation. My (...) paper examines the role of this “label” metaphor in current statements of research ethics. In contrast to this prevailing “label” metaphor, my own positive account of vulnerability develops a dynamic way of understanding the structure of the concept of vulnerability based on the idea of “layers of vulnerability.” I examine several cases involving women, as they are sometimes labeled as a vulnerable population and sometimes not. My analysis demonstrates the essential role of this revised concept of vulnerability in bioethics and research ethics. (shrink)

Noninvasive prenatal screening using cell-free DNA, which analyzes placental DNA circulating in maternal blood to provide information about fetal chromosomal disorders early in pregnancy and without risk to the fetus, has been hailed as a potential “paradigm shift” in prenatal genetic screening. Commercial provision of cell-free DNA screening has contributed to a rapid expansion of the tests included in the screening panels. The tests can include screening for sex chromosome anomalies, rare subchromosomal microdeletions and aneuploidies, and most recently, the entire (...) fetal genome. The benefits of this screening tool are generally framed, by both providers and commercial laboratories, as enhancing reproductive autonomy and choice by providing an earlier, simpler, and more accurate screening while potentially reducing the need for invasive follow-up testing. The majority of the literature has explored these issues empirically or conceptually from a European or North American vantage point, one that assumes normative priorities such as individual reproductive autonomy and the clinical availability of maternal health care or prenatal screening programs within which cell-free DNA screening is offered. While its implementation has raised both challenges and opportunities, very little is known about real-world experiences and the implications of the rapid introduction of cell-free DNA screening outside of North America and Europe, especially in low- and middle-income countries. To begin addressing this gap in knowledge, we organized a four-day international workshop to explore the ethical, legal, social, economic, clinical, and practical implications of the global expansion of cell-free DNA screening. We describe eight key insights that arose from the workshop. (shrink)

To promote research subjects' comprehension of study information, experts recommend simplifying consent documents, providing verbal information and visual aids, and asking patients to "teach-back" main points. We implemented these guidelines for enrollment in a clinical trial. We examined the independent effect of literacy on subject comprehension, determining whether subjects could correctly teach back eight key concepts on the first attempt. Approximately 40% were able to teach back the eight items initially; those with higher literacy levels did much better. Despite the (...) use of simplified consent procedures, this study found that literacy remains an independent predictor of comprehension. Additional measures will be necessary to promote informed consent among low-literacy subjects. (shrink)

Paul Appelbaum and colleagues propose four models of informed consent to research that deploys whole genome sequencing and may generate incidental findings. They base their analysis on empirical data that suggests that research participants want to be offered incidental findings and on a normative consensus that researchers incur a duty to offer them. Their models will contribute to the heated policy debate about return of incidental findings. But in my view, they do not ask the foundational question, In the context (...) of genome sequencing, how much work can consent be asked to do? (shrink)

Some are concerned about the possibility that offering money for research participation can constitute coercion or undue influence capable of distorting the judgment of potential research subjects and compromising the voluntariness of their informed consent. The author recognizes that more often than not there are multiple influences leading to decisions, including decisions about research participation. The concept of undue influence is explored, as well as the question of whether or not there is something uniquely distorting about money as opposed to (...) a chance for treatment or medical care. An amount of money that is not excessive and is calculated on the basis of time or contribution may, rather than constitute an undue inducement, be an indication of respect for the time and contribution that research subjects make. (shrink)

(2013). A Review of Evidence on Consent Bias in Research. The American Journal of Bioethics: Vol. 13, No. 4, pp. 42-44. doi: 10.1080/15265161.2013.767958.