Disorders of the possession and the content of thought
False belief, based on incorrect inference about external reality, that is firmly held despite objective and obvious contradictory proof or evidence and despite the fact that other members of the culture do not share the belief and cannot be corrected by reasoning.
(unspecific productive symptom of different psychoses)
False or unreasonable belief or idea that is sustained beyond the bounds of reason and of great personal value (may not be absolutely false but inadequately significant). It is held with less intensity or duration than a delusion but is usually associated with mental illness.
(productive disorder of subpsychotic level, typical for paranoid disorder of personality)
Persistent and recurrent idea, thought, or impulse that cannot be eliminated from consciousness by logical effort or reasoning; obsessions are involuntary and ego-dystonic. (usually associated with hypothymia and anxiety. Unspecific productive symptom of neurotic level, usual for neuroses and mild phase of schizophrenia or organic disorders)
|Veracity||False ideas||True ideas||False, true or meaningless ideas|
|Behaviour control||Poor, dangerous actions are rather probable||Poor but possible||Good, no dangerous actions|
|Diagnosis||Organic or functional psychoses||Subpsychotic states (initial period of psychoses), paranoid personality||Neuroses or mild disorders (initial phase of schizophrenia or organic disorders)|