[Personality dimensions and neuropsychological performance in first-degree relatives of patients with schizophrenia and by affective psychosis].

Several studies have found a significant increase in the prevalence of some personality disorders in the first-degree relatives of patients with schizophrenia; other studies have found subtle neuropsychological deficits in these relatives. However, little is known about the specificity of the personality traits reported or about the relationship between these traits and the neuropsychological deficits. One hundred first-degree relatives of patients with schizophrenia (AS) and 88 first-degree relatives of affective psychotic (APA) patients completed the Eysenck Personality Questionnaire which measures extraversion, neuroticism, psychoticism.