There has been growing awareness of the high prevalence of negative cognitions about the self in patients with persecutory delusions, and it has been proposed that paranoid fears build upon these perceived vulnerabilities. This study aimed to investigate for the first time a wide range of different conceptualisations of the negative self, and to examine associations with suicidal ideation, in p...

OBJECTIVE Research suggests that the contents of delusions in schizophrenia are influenced by culture and social environment. However, few studies have investigated the chronological change of such delusions within a society. To investigate specifically the changes in the persecutory delusions of schizophrenia that have occurred over time, we compared the nature of the persecutors and their per...

BACKGROUND Cognitive theories of persecutory delusions in schizophrenia include increased attention to threat and reduced re-appraisal of information during decision-making. METHODS We employed visual scan path measurements, an 'on-line' marker of attention, in schizophrenic patients with persecutory delusions (N = 19), negative symptom- and medication-matched patients with non-persecutory de...

The present study investigated the reasoning of high and low-delusion-prone individuals on probability estimation tasks using emotionally neutral and delusional narratives. Undergraduate students (N = 33) who were classified as high-delusion-prone or low-delusion-prone based on their scores on a widely used measure of delusion-proneness in reasoning research (the Peters et al. Delusions Invento...

Introduction: Delusion of pregnancy is a bizarre delusion in which one feels s/he is carrying a fetus. The etiology is unknown, but aloneness, masturbation, and stress may precipitate this disorder. Case Presentation: We introduce a young, single man who has delusions of pregnancy. This type of delusion is not a well-known disorder; based on investigated ...

psychosis, a relatively common condition that affects 3%-5% percent of the population, occurs in a variety of diagnostic contexts. various medical conditions may lead to the development of psychotic symptoms. to date psychotic disorders due to infection with hepatitis a virus (hav) have â been â rarely reported. in this paper, we described an acute psychotic disorder in an 18-year-old male diag...

Background and Objectives: Bizarre hypochondriacal delusion is an important content of delusion of pregnancy during post-partum period. Methods: Here we report two cases with postpartum delusion of pregnancy; one with pre-existing schizophrenia and another one with family history of pseudocyesis and schizoaffective disorder but with no pre-existing psychiatric illness. Results: Nosological, phe...

AIM The study aimed at providing the psychometric properties of Polish version of Peters et al. Delusion Inventory (PPDI) (1999) and assessing the prevalence of delusion-like experiences among healthy subjects in the Polish population. METHODS Polish version of PDI was developed on the basis of back translation procedure. The scale was completed by 421 adult subjects. On the basis of the scor...

Although current models of delusion converge in proposing that delusions are based on unusual experiences, they differ in the role that they accord experience in the formation of delusions. On some accounts, the experience comprises the very content of the delusion, whereas on other accounts the delusion is adopted in an attempt to explain an unusual experience. We call these the endorsement an...