Shared psychotic disorder also known as folie a dues is thought to occur in persons who live close together, so that delusions of the primarily ill patient are transferred to the partner. A case of shared paranoid psychotic disorder, with primary diagnosis of persecutory delusional disorder in the husband is described. The delusion and its consequent safety behaviors were so strong that led to ...

Mirrored-self misidentification delusion is the belief that one's reflection in the mirror is not oneself. This experiment used hypnotic suggestion to impair normal face processing in healthy participants and recreate key aspects of the delusion in the laboratory. From a pool of 439 participants, 22 high hypnotisable participants ("highs") and 20 low hypnotisable participants were selected on t...

The main objective of this study was to analyze the hypothesis that patients with persecutory delusions would show a depressive-type self-concept when assessed with implicit measures of self-schema (i.e., a free recall test of self-relevant adjectives) but would show a normal self-concept when assessed with explicit measures (i.e., a self-concept questionnaire and a task requiring endorsement o...

This article describes a study that used hypnosis to temporarily re-create mirrored-self misidentification, which is the delusional belief that the person one sees in the mirror is a stranger. Following a hypnotic suggestion to see a stranger in the mirror, high hypnotizable subjects described seeing a stranger with physical characteristics different to their own. Whereas subjects' beliefs abou...

Shared psychotic disorder, characterized by shared delusion among two or more subjects (termed "Folie à deux," "trois," etc.), is often associated with strong religious beliefs or social isolation, factors creating strong psychological sympathy. Recently, we treated a rare familial case of "Folie à quatre" in central Tokyo without such influences. The proband was a schizophrenia patient and you...

Lack of insight, very frequent in schizophrenia, can be considered a deficit in Theory of Mind (ToM) performances, and is also found in other psychiatric disorders. In this study, we used the first- to third-person shift to examine subjects with psychotic and psychotic mood disorders. 92 patients were evaluated with SANS and SAPS scales and asked to talk about their delusions. They were asked t...

Delusion of sex change is not uncommon as a pan] of the schizophrenic illness. But the coexistence of gender identity disorder (GID) and schizophrenia is rare and show differential response to treatment with antipsychotics.