Decision Analysis can not be done without some reflection on the normative grounds of the analysis. The aim of decision analysis is to recommend an action. This recommendation constitutes a normative act. There are mainly two economic decision analyses: Cost-benefit analysis and...

An assessment of the consequences of biological invasions and of the measures taken against must be at the base of each social decision in this field. Three forms of uncertainty can be distinguished that make such a decision difficult to take: (1) factual uncertainty, which encompasses not only...