based on the naturalist fallacy or xenophobic prejudice; it is not a scientific judgement. The role of scientists in studying invasive species should be to gather, interpret and communicate information as accurately and objectively as possible.

‘naturalistic fallacy’. Accepted axiomatically in the West, the fallacy specifies that what ought to be the case is not inferable from what is the case about our nature. Thus although natural norms implicit in medicine were implied historically by a natural theology shared by major religions, the latter

we avoid the naturalistic fallacy while taking ideology seriously? It is then suggested that the challenge posed by ideol-ogy in the arena of organizational ethics is in many ways similar to the challenge posed by developmentalist ac-counts of moral 'stages ' in the arena of individual

the naturalistic fallacy (i.e., confusing what is with what ought to be) and without the use of formal deduction from first principles. We describe points of divergence as well as convergence in the types of warrant appealed to by naturalistic decision making and decision analysis, letting each approach shed light

between traditional and naturalistic epistemologists is rooted in the difference in the attitudes to the naturalistic fallacy taken by these two sides. Naturalists treat this “fallacy ” as unavoidable, which pro-foundly influences their account of normativity. In my paper, I show that the main problem

norms (logical, epistemological, ethical) into facts (biological, psychological, historical, social). Frege and Russell attacked naturalistic psychologism in logic and in the philosophy of mathematics. Moore denounced the “naturalistic fallacy ” in ethics. The positivists were equally dismissive

dualistic reformulation to come up to speed with the contemporary needs of society. Four levels of contention – epistemology, mankind’s place in the scale of life, singularity and the naturalistic fallacy- are traced through a review of the literature and theoretical thinking on this issue as it has

; it is popularized science, what would be a mat-ter of common sense if we were to take the trouble to learn. Moore's allegiance to science is the cord that connects his ethical and non-ethical work. In Principia Ethica, he attempts to introduce the spirit of scientific investigation into ethics. The 'naturalistic

dualistic reformulation to come up to speed with the contemporary needs of society. Four levels of contention -epistemology, mankind's place in the scale of life, singularity and the naturalistic fallacy -are traced through a review of the literature and theoretical thinking on this issue as it has

Ethical naturalism, the theory claiming that natural facts and especially facts concerning human nature play a justificatory role in ethics, is not very popular amongst moral philosophers. Especially in countries where Kant's influence is large, the charge of naturalistic fallacy is often made