Background: The four principles of Beauchamp and Childress - autonomy, non-maleficence, beneficence and justice - havebeen extremely influential in the field of medical ethics, and are fundamental for understanding the currentapproach to ethical assessment in health care. This study tests whether these principles can be quantitativelymeasured on an individual level, and then subsequently if they are used in the decision making process whenindividuals are faced with ethical dilemmas. Methods: The Analytic Hierarchy Process was used as a tool for the measurement (...) of the principles. Four scenarios, whichinvolved conflicts between the medical ethical principles, were presented to participants and they madejudgments about the ethicality of the action in the scenario, and their intentions to act in the same manner if theywere in the situation. Results: Individual preferences for these medical ethical principles can be measured using the Analytic HierarchyProcess. This technique provides a useful tool in which to highlight individual medical ethical values. Onaverage individuals have a significant preference for non-maleficence over the other principles, however, andperhaps counter-intuitively, this preference does not seem to relate to applied ethical judgements in specificethical dilemmas. Conclusions: People state they value these medical ethical principles but they do not actually seem to use them directly in thedecision making process. The reasons for this are explained through the lack of a behavioural model to accountfor the relevant situational factors not captured by the principles. The limitations of the principles in predictingethical decision making are discussed. (shrink)

Background The increase in empirical methods of research in bioethics over the last two decades is typically perceived as a welcomed broadening of the discipline, with increased integration of social and life scientists into the field and ethics consultants into the clinical setting, however it also represents a loss of confidence in the typical normative and analytic methods of bioethics. Discussion The recent incipiency of "Evidence-Based Ethics" attests to this phenomenon and should be rejected as a solution to the current (...) ambivalence toward the normative resolution of moral problems in a pluralistic society. While "evidence-based" is typically read in medicine and other life and social sciences as the empirically-adequate standard of reasonable practice and a means for increasing certainty, I propose that the evidence-based movement in fact gains consensus by displacing normative discourse with aggregate or statistically-derived empirical evidence as the "bottom line". Therefore, along with wavering on the fact/value distinction, evidence-based ethics threatens bioethics' normative mandate. The appeal of the evidence-based approach is that it offers a means of negotiating the demands of moral pluralism. Rather than appealing to explicit values that are likely not shared by all, "the evidence" is proposed to adjudicate between competing claims. Quantified measures are notably more "neutral" and democratic than liberal markers like "species normal functioning". Yet the positivist notion that claims stand or fall in light of the evidence is untenable; furthermore, the legacy of positivism entails the quieting of empirically non-verifiable considerations like moral claims and judgments. As a result, evidence-based ethics proposes to operate with the implicit normativity that accompanies the production and presentation of all biomedical and scientific facts unchecked. Summary The "empirical turn" in bioethics signals a need for reconsideration of the methods used for moral evaluation and resolution, however the options should not include obscuring normative content by seemingly neutral technical measure. (shrink)