The subject of this special issue is how decision theory relates to ethical theory. Guest editor Christoph Lumer (University of Siena, Italy) has put considerable effort into editing this issue. We are very grateful to him and above all glad that the issue finally comes out. In his introduction Lumer gives an overview of the contents of the issue which makes this editorial almost superfluous. Most of the papers discuss the contribution of rational decision theory to the justification of morality. What makes the issue special is that it also pays attention to the harmful influence of decision theory on ethics.

Amsterdam/Utrecht, November 2010