Dagmar Versmissen

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This study examined whether the probabilistic reasoning bias referred to as a "jumping-to-conclusions" (JTC) style of reasoning, which, according to previous research, is associated with particular psychotic symptoms such as delusions, represents a trait that can also be detected in nonpsychotic relatives of patients with schizophrenia and in nonpsychotic(More)
Patients with psychosis display alterations in social cognition as well as in the realm of neurocognition. It is unclear, however, to what degree these cognitive domains represent two separate dimensions of liability or the pleiotropic expression of a single deficit. The purpose of the present study was to investigate (i) to what extent alterations in(More)
OBJECTIVE The associations of two types of childhood trauma (abuse and neglect) with psychosis symptom domains were investigated in subjects with psychotic illness, high psychosis vulnerability, and average psychosis vulnerability. METHOD Childhood trauma was assessed with the Childhood Trauma Questionnaire. Symptoms were assessed with the Positive and(More)
BACKGROUND The aims of the study were to investigate whether (i) patients with lifetime presence of non-affective psychosis show an external-personal attribution bias for negative events, (ii) this attribution style can also be detected in first-degree relatives of patients with psychosis and subjects with subclinical psychotic experiences, and (iii) this(More)
OBJECTIVE Failing of mentalising has been suggested to underlie certain symptoms of psychosis. An as yet unresolved issue is whether mentalising deficits reflect a characteristic which can also be detected in people at risk for psychosis or people with evidence of subclinical expression of psychosis. This study wanted to assess an aspect of mentalising in(More)
OBJECTIVE To investigate whether cognitive alterations associated with vulnerability to psychosis, are associated with expression of psychopathology and functional outcome in groups at different levels of risk for psychotic illness. METHOD Neurocognition, psychopathology and functional outcome were measured in subjects with variable risk for psychosis: i)(More)
BACKGROUND Alterations in self-monitoring have been reported in patients with psychotic disorders, but it remains unclear to what degree they represent true indicators of familial vulnerability for psychosis. METHOD An error-correction action-monitoring task was used to examine self-monitoring in 42 patients with schizophrenia, 32 of their unaffected(More)
BACKGROUND Current cognitive models of positive symptoms of psychosis suggest a mechanism of defective self-monitoring that may be relevant for (i) expression of psychosis at the clinical and subclinical level and (ii) transmission of risk for psychosis. METHOD The study included 41 patients with psychosis, 39 non-psychotic first-degree relatives, 39(More)
BACKGROUND A disorder of self-monitoring may underlie the positive symptoms of psychosis. The cognitive mechanisms associated with these symptoms may also be detectable in individuals at risk of psychosis. AIMS To investigate (a) whether patients with psychosis show impaired self-monitoring, (b) to what degree this is associated with positive symptoms,(More)
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