Normativity and Rationality in Delusional Psychiatric Disorders



Psychiatric treatment and diagnosis rests upon a richer conception of normativity than, for example, cognitive neuropsychology. This paper explores the role that considerations of rationality can play in defining this richer conception of normativity. It distinguishes two types of rationality (procedural and epistemic)and considers how each type can break down in different ways in delusional psychiatric disorders.