Delusions and confabulations occurring in psychiatric disorders such as schizophrenia, amnesic syndromes, and dementia, are defined on the basis of their surface features. In particular, they are classified and diagnosed as beliefs that violate norms of rationality. In this paper the author argues that current epistemic accounts fail to provide sufficient conditions for delusions and confabulations. Moreover, the identified epistemic faults cannot serve as criteria of demarcation between pathological and non-pathological beliefs.
Keywords: Beliefs, Confabulation, Delusion, Demarcation criterion, Diagnostic criteria, Psychiatric classification, Rationality